source "arch/arm/plat-spear/Kconfig"
source "arch/arm/mach-s3c24xx/Kconfig"
-if ARCH_S3C24XX
-source "arch/arm/mach-s3c2412/Kconfig"
-source "arch/arm/mach-s3c2440/Kconfig"
-endif
if ARCH_S3C64XX
source "arch/arm/mach-s3c64xx/Kconfig"
machine-$(CONFIG_ARCH_PXA) += pxa
machine-$(CONFIG_ARCH_REALVIEW) += realview
machine-$(CONFIG_ARCH_RPC) += rpc
-machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx s3c2412 s3c2440
+machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx
machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx
machine-$(CONFIG_ARCH_S5P64X0) += s5p64x0
machine-$(CONFIG_ARCH_S5PC100) += s5pc100
+++ /dev/null
-# Copyright 2007 Simtec Electronics
-#
-# Licensed under GPLv2
-
-# cpu frequency scaling support
-
-config S3C2410_CPUFREQ
- bool
- depends on CPU_FREQ_S3C24XX && CPU_S3C2410
- select S3C2410_CPUFREQ_UTILS
- help
- CPU Frequency scaling support for S3C2410
-
-config S3C2410_PLLTABLE
- bool
- depends on S3C2410_CPUFREQ && CPU_FREQ_S3C24XX_PLL
- default y
- help
- Select the PLL table for the S3C2410
-
+++ /dev/null
-# arch/arm/mach-s3c2410/Makefile
-#
-# Copyright 2007 Simtec Electronics
-#
-# Licensed under GPLv2
-
-obj-y :=
-obj-m :=
-obj-n :=
-obj- :=
-
-obj-$(CONFIG_S3C2410_CPUFREQ) += cpu-freq.o
-obj-$(CONFIG_S3C2410_PLLTABLE) += pll.o
-
+++ /dev/null
-/* linux/arch/arm/mach-s3c2410/cpu-freq.c
- *
- * Copyright (c) 2006-2008 Simtec Electronics
- * http://armlinux.simtec.co.uk/
- * Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2410 CPU Frequency scaling
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <mach/regs-clock.h>
-
-#include <plat/cpu.h>
-#include <plat/clock.h>
-#include <plat/cpu-freq-core.h>
-
-/* Note, 2410A has an extra mode for 1:4:4 ratio, bit 2 of CLKDIV */
-
-static void s3c2410_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
-{
- u32 clkdiv = 0;
-
- if (cfg->divs.h_divisor == 2)
- clkdiv |= S3C2410_CLKDIVN_HDIVN;
-
- if (cfg->divs.p_divisor != cfg->divs.h_divisor)
- clkdiv |= S3C2410_CLKDIVN_PDIVN;
-
- __raw_writel(clkdiv, S3C2410_CLKDIVN);
-}
-
-static int s3c2410_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
-{
- unsigned long hclk, fclk, pclk;
- unsigned int hdiv, pdiv;
- unsigned long hclk_max;
-
- fclk = cfg->freq.fclk;
- hclk_max = cfg->max.hclk;
-
- cfg->freq.armclk = fclk;
-
- s3c_freq_dbg("%s: fclk is %lu, max hclk %lu\n",
- __func__, fclk, hclk_max);
-
- hdiv = (fclk > cfg->max.hclk) ? 2 : 1;
- hclk = fclk / hdiv;
-
- if (hclk > cfg->max.hclk) {
- s3c_freq_dbg("%s: hclk too big\n", __func__);
- return -EINVAL;
- }
-
- pdiv = (hclk > cfg->max.pclk) ? 2 : 1;
- pclk = hclk / pdiv;
-
- if (pclk > cfg->max.pclk) {
- s3c_freq_dbg("%s: pclk too big\n", __func__);
- return -EINVAL;
- }
-
- pdiv *= hdiv;
-
- /* record the result */
- cfg->divs.p_divisor = pdiv;
- cfg->divs.h_divisor = hdiv;
-
- return 0 ;
-}
-
-static struct s3c_cpufreq_info s3c2410_cpufreq_info = {
- .max = {
- .fclk = 200000000,
- .hclk = 100000000,
- .pclk = 50000000,
- },
-
- /* transition latency is about 5ms worst-case, so
- * set 10ms to be sure */
- .latency = 10000000,
-
- .locktime_m = 150,
- .locktime_u = 150,
- .locktime_bits = 12,
-
- .need_pll = 1,
-
- .name = "s3c2410",
- .calc_iotiming = s3c2410_iotiming_calc,
- .set_iotiming = s3c2410_iotiming_set,
- .get_iotiming = s3c2410_iotiming_get,
- .resume_clocks = s3c2410_setup_clocks,
-
- .set_fvco = s3c2410_set_fvco,
- .set_refresh = s3c2410_cpufreq_setrefresh,
- .set_divs = s3c2410_cpufreq_setdivs,
- .calc_divs = s3c2410_cpufreq_calcdivs,
-
- .debug_io_show = s3c_cpufreq_debugfs_call(s3c2410_iotiming_debugfs),
-};
-
-static int s3c2410_cpufreq_add(struct device *dev,
- struct subsys_interface *sif)
-{
- return s3c_cpufreq_register(&s3c2410_cpufreq_info);
-}
-
-static struct subsys_interface s3c2410_cpufreq_interface = {
- .name = "s3c2410_cpufreq",
- .subsys = &s3c2410_subsys,
- .add_dev = s3c2410_cpufreq_add,
-};
-
-static int __init s3c2410_cpufreq_init(void)
-{
- return subsys_interface_register(&s3c2410_cpufreq_interface);
-}
-
-arch_initcall(s3c2410_cpufreq_init);
-
-static int s3c2410a_cpufreq_add(struct device *dev,
- struct subsys_interface *sif)
-{
- /* alter the maximum freq settings for S3C2410A. If a board knows
- * it only has a maximum of 200, then it should register its own
- * limits. */
-
- s3c2410_cpufreq_info.max.fclk = 266000000;
- s3c2410_cpufreq_info.max.hclk = 133000000;
- s3c2410_cpufreq_info.max.pclk = 66500000;
- s3c2410_cpufreq_info.name = "s3c2410a";
-
- return s3c2410_cpufreq_add(dev, sif);
-}
-
-static struct subsys_interface s3c2410a_cpufreq_interface = {
- .name = "s3c2410a_cpufreq",
- .subsys = &s3c2410a_subsys,
- .add_dev = s3c2410a_cpufreq_add,
-};
-
-static int __init s3c2410a_cpufreq_init(void)
-{
- return subsys_interface_register(&s3c2410a_cpufreq_interface);
-}
-
-arch_initcall(s3c2410a_cpufreq_init);
+++ /dev/null
-/* arch/arm/mach-s3c2410/pll.c
- *
- * Copyright (c) 2006-2007 Simtec Electronics
- * http://armlinux.simtec.co.uk/
- * Ben Dooks <ben@simtec.co.uk>
- * Vincent Sanders <vince@arm.linux.org.uk>
- *
- * S3C2410 CPU PLL tables
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/list.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-
-#include <plat/cpu.h>
-#include <plat/cpu-freq-core.h>
-
-static struct cpufreq_frequency_table pll_vals_12MHz[] = {
- { .frequency = 34000000, .index = PLLVAL(82, 2, 3), },
- { .frequency = 45000000, .index = PLLVAL(82, 1, 3), },
- { .frequency = 51000000, .index = PLLVAL(161, 3, 3), },
- { .frequency = 48000000, .index = PLLVAL(120, 2, 3), },
- { .frequency = 56000000, .index = PLLVAL(142, 2, 3), },
- { .frequency = 68000000, .index = PLLVAL(82, 2, 2), },
- { .frequency = 79000000, .index = PLLVAL(71, 1, 2), },
- { .frequency = 85000000, .index = PLLVAL(105, 2, 2), },
- { .frequency = 90000000, .index = PLLVAL(112, 2, 2), },
- { .frequency = 101000000, .index = PLLVAL(127, 2, 2), },
- { .frequency = 113000000, .index = PLLVAL(105, 1, 2), },
- { .frequency = 118000000, .index = PLLVAL(150, 2, 2), },
- { .frequency = 124000000, .index = PLLVAL(116, 1, 2), },
- { .frequency = 135000000, .index = PLLVAL(82, 2, 1), },
- { .frequency = 147000000, .index = PLLVAL(90, 2, 1), },
- { .frequency = 152000000, .index = PLLVAL(68, 1, 1), },
- { .frequency = 158000000, .index = PLLVAL(71, 1, 1), },
- { .frequency = 170000000, .index = PLLVAL(77, 1, 1), },
- { .frequency = 180000000, .index = PLLVAL(82, 1, 1), },
- { .frequency = 186000000, .index = PLLVAL(85, 1, 1), },
- { .frequency = 192000000, .index = PLLVAL(88, 1, 1), },
- { .frequency = 203000000, .index = PLLVAL(161, 3, 1), },
-
- /* 2410A extras */
-
- { .frequency = 210000000, .index = PLLVAL(132, 2, 1), },
- { .frequency = 226000000, .index = PLLVAL(105, 1, 1), },
- { .frequency = 266000000, .index = PLLVAL(125, 1, 1), },
- { .frequency = 268000000, .index = PLLVAL(126, 1, 1), },
- { .frequency = 270000000, .index = PLLVAL(127, 1, 1), },
-};
-
-static int s3c2410_plls_add(struct device *dev, struct subsys_interface *sif)
-{
- return s3c_plltab_register(pll_vals_12MHz, ARRAY_SIZE(pll_vals_12MHz));
-}
-
-static struct subsys_interface s3c2410_plls_interface = {
- .name = "s3c2410_plls",
- .subsys = &s3c2410_subsys,
- .add_dev = s3c2410_plls_add,
-};
-
-static int __init s3c2410_pll_init(void)
-{
- return subsys_interface_register(&s3c2410_plls_interface);
-
-}
-
-arch_initcall(s3c2410_pll_init);
-
-static struct subsys_interface s3c2410a_plls_interface = {
- .name = "s3c2410a_plls",
- .subsys = &s3c2410a_subsys,
- .add_dev = s3c2410_plls_add,
-};
-
-static int __init s3c2410a_pll_init(void)
-{
- return subsys_interface_register(&s3c2410a_plls_interface);
-}
-
-arch_initcall(s3c2410a_pll_init);
+++ /dev/null
-# Copyright 2007 Simtec Electronics
-#
-# Licensed under GPLv2
-
-# Note, the S3C2412 IOtiming support is in plat-s3c24xx
-
-config S3C2412_CPUFREQ
- bool
- depends on CPU_FREQ_S3C24XX && CPU_S3C2412
- default y
- select S3C2412_IOTIMING
- help
- CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
+++ /dev/null
-# arch/arm/mach-s3c2412/Makefile
-#
-# Copyright 2007 Simtec Electronics
-#
-# Licensed under GPLv2
-
-obj-y :=
-obj-m :=
-obj-n :=
-obj- :=
-
-obj-$(CONFIG_S3C2412_CPUFREQ) += cpu-freq.o
+++ /dev/null
-/* linux/arch/arm/mach-s3c2412/cpu-freq.c
- *
- * Copyright 2008 Simtec Electronics
- * http://armlinux.simtec.co.uk/
- * Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2412 CPU Frequency scalling
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <mach/regs-clock.h>
-#include <mach/regs-s3c2412-mem.h>
-
-#include <plat/cpu.h>
-#include <plat/clock.h>
-#include <plat/cpu-freq-core.h>
-
-/* our clock resources. */
-static struct clk *xtal;
-static struct clk *fclk;
-static struct clk *hclk;
-static struct clk *armclk;
-
-/* HDIV: 1, 2, 3, 4, 6, 8 */
-
-static int s3c2412_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
-{
- unsigned int hdiv, pdiv, armdiv, dvs;
- unsigned long hclk, fclk, armclk, armdiv_clk;
- unsigned long hclk_max;
-
- fclk = cfg->freq.fclk;
- armclk = cfg->freq.armclk;
- hclk_max = cfg->max.hclk;
-
- /* We can't run hclk above armclk as at the best we have to
- * have armclk and hclk in dvs mode. */
-
- if (hclk_max > armclk)
- hclk_max = armclk;
-
- s3c_freq_dbg("%s: fclk=%lu, armclk=%lu, hclk_max=%lu\n",
- __func__, fclk, armclk, hclk_max);
- s3c_freq_dbg("%s: want f=%lu, arm=%lu, h=%lu, p=%lu\n",
- __func__, cfg->freq.fclk, cfg->freq.armclk,
- cfg->freq.hclk, cfg->freq.pclk);
-
- armdiv = fclk / armclk;
-
- if (armdiv < 1)
- armdiv = 1;
- if (armdiv > 2)
- armdiv = 2;
-
- cfg->divs.arm_divisor = armdiv;
- armdiv_clk = fclk / armdiv;
-
- hdiv = armdiv_clk / hclk_max;
- if (hdiv < 1)
- hdiv = 1;
-
- cfg->freq.hclk = hclk = armdiv_clk / hdiv;
-
- /* set dvs depending on whether we reached armclk or not. */
- cfg->divs.dvs = dvs = armclk < armdiv_clk;
-
- /* update the actual armclk we achieved. */
- cfg->freq.armclk = dvs ? hclk : armdiv_clk;
-
- s3c_freq_dbg("%s: armclk %lu, hclk %lu, armdiv %d, hdiv %d, dvs %d\n",
- __func__, armclk, hclk, armdiv, hdiv, cfg->divs.dvs);
-
- if (hdiv > 4)
- goto invalid;
-
- pdiv = (hclk > cfg->max.pclk) ? 2 : 1;
-
- if ((hclk / pdiv) > cfg->max.pclk)
- pdiv++;
-
- cfg->freq.pclk = hclk / pdiv;
-
- s3c_freq_dbg("%s: pdiv %d\n", __func__, pdiv);
-
- if (pdiv > 2)
- goto invalid;
-
- pdiv *= hdiv;
-
- /* store the result, and then return */
-
- cfg->divs.h_divisor = hdiv * armdiv;
- cfg->divs.p_divisor = pdiv * armdiv;
-
- return 0;
-
- invalid:
- return -EINVAL;
-}
-
-static void s3c2412_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
-{
- unsigned long clkdiv;
- unsigned long olddiv;
-
- olddiv = clkdiv = __raw_readl(S3C2410_CLKDIVN);
-
- /* clear off current clock info */
-
- clkdiv &= ~S3C2412_CLKDIVN_ARMDIVN;
- clkdiv &= ~S3C2412_CLKDIVN_HDIVN_MASK;
- clkdiv &= ~S3C2412_CLKDIVN_PDIVN;
-
- if (cfg->divs.arm_divisor == 2)
- clkdiv |= S3C2412_CLKDIVN_ARMDIVN;
-
- clkdiv |= ((cfg->divs.h_divisor / cfg->divs.arm_divisor) - 1);
-
- if (cfg->divs.p_divisor != cfg->divs.h_divisor)
- clkdiv |= S3C2412_CLKDIVN_PDIVN;
-
- s3c_freq_dbg("%s: div %08lx => %08lx\n", __func__, olddiv, clkdiv);
- __raw_writel(clkdiv, S3C2410_CLKDIVN);
-
- clk_set_parent(armclk, cfg->divs.dvs ? hclk : fclk);
-}
-
-static void s3c2412_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg)
-{
- struct s3c_cpufreq_board *board = cfg->board;
- unsigned long refresh;
-
- s3c_freq_dbg("%s: refresh %u ns, hclk %lu\n", __func__,
- board->refresh, cfg->freq.hclk);
-
- /* Reduce both the refresh time (in ns) and the frequency (in MHz)
- * by 10 each to ensure that we do not overflow 32 bit numbers. This
- * should work for HCLK up to 133MHz and refresh period up to 30usec.
- */
-
- refresh = (board->refresh / 10);
- refresh *= (cfg->freq.hclk / 100);
- refresh /= (1 * 1000 * 1000); /* 10^6 */
-
- s3c_freq_dbg("%s: setting refresh 0x%08lx\n", __func__, refresh);
- __raw_writel(refresh, S3C2412_REFRESH);
-}
-
-/* set the default cpu frequency information, based on an 200MHz part
- * as we have no other way of detecting the speed rating in software.
- */
-
-static struct s3c_cpufreq_info s3c2412_cpufreq_info = {
- .max = {
- .fclk = 200000000,
- .hclk = 100000000,
- .pclk = 50000000,
- },
-
- .latency = 5000000, /* 5ms */
-
- .locktime_m = 150,
- .locktime_u = 150,
- .locktime_bits = 16,
-
- .name = "s3c2412",
- .set_refresh = s3c2412_cpufreq_setrefresh,
- .set_divs = s3c2412_cpufreq_setdivs,
- .calc_divs = s3c2412_cpufreq_calcdivs,
-
- .calc_iotiming = s3c2412_iotiming_calc,
- .set_iotiming = s3c2412_iotiming_set,
- .get_iotiming = s3c2412_iotiming_get,
-
- .resume_clocks = s3c2412_setup_clocks,
-
- .debug_io_show = s3c_cpufreq_debugfs_call(s3c2412_iotiming_debugfs),
-};
-
-static int s3c2412_cpufreq_add(struct device *dev,
- struct subsys_interface *sif)
-{
- unsigned long fclk_rate;
-
- hclk = clk_get(NULL, "hclk");
- if (IS_ERR(hclk)) {
- printk(KERN_ERR "%s: cannot find hclk clock\n", __func__);
- return -ENOENT;
- }
-
- fclk = clk_get(NULL, "fclk");
- if (IS_ERR(fclk)) {
- printk(KERN_ERR "%s: cannot find fclk clock\n", __func__);
- goto err_fclk;
- }
-
- fclk_rate = clk_get_rate(fclk);
- if (fclk_rate > 200000000) {
- printk(KERN_INFO
- "%s: fclk %ld MHz, assuming 266MHz capable part\n",
- __func__, fclk_rate / 1000000);
- s3c2412_cpufreq_info.max.fclk = 266000000;
- s3c2412_cpufreq_info.max.hclk = 133000000;
- s3c2412_cpufreq_info.max.pclk = 66000000;
- }
-
- armclk = clk_get(NULL, "armclk");
- if (IS_ERR(armclk)) {
- printk(KERN_ERR "%s: cannot find arm clock\n", __func__);
- goto err_armclk;
- }
-
- xtal = clk_get(NULL, "xtal");
- if (IS_ERR(xtal)) {
- printk(KERN_ERR "%s: cannot find xtal clock\n", __func__);
- goto err_xtal;
- }
-
- return s3c_cpufreq_register(&s3c2412_cpufreq_info);
-
-err_xtal:
- clk_put(armclk);
-err_armclk:
- clk_put(fclk);
-err_fclk:
- clk_put(hclk);
-
- return -ENOENT;
-}
-
-static struct subsys_interface s3c2412_cpufreq_interface = {
- .name = "s3c2412_cpufreq",
- .subsys = &s3c2412_subsys,
- .add_dev = s3c2412_cpufreq_add,
-};
-
-static int s3c2412_cpufreq_init(void)
-{
- return subsys_interface_register(&s3c2412_cpufreq_interface);
-}
-
-arch_initcall(s3c2412_cpufreq_init);
+++ /dev/null
-/* linux/arch/arm/mach-s3c2412/gpio.c
- *
- * Copyright (c) 2007 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
- *
- * http://armlinux.simtec.co.uk/.
- *
- * S3C2412/S3C2413 specific GPIO support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/gpio.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <mach/regs-gpio.h>
-#include <mach/hardware.h>
-
-#include <plat/gpio-core.h>
-
-int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state)
-{
- struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
- unsigned long offs = pin - chip->chip.base;
- unsigned long flags;
- unsigned long slpcon;
-
- offs *= 2;
-
- if (pin < S3C2410_GPB(0))
- return -EINVAL;
-
- if (pin >= S3C2410_GPF(0) &&
- pin <= S3C2410_GPG(16))
- return -EINVAL;
-
- if (pin > S3C2410_GPH(16))
- return -EINVAL;
-
- local_irq_save(flags);
-
- slpcon = __raw_readl(chip->base + 0x0C);
-
- slpcon &= ~(3 << offs);
- slpcon |= state << offs;
-
- __raw_writel(slpcon, chip->base + 0x0C);
-
- local_irq_restore(flags);
-
- return 0;
-}
-
-EXPORT_SYMBOL(s3c2412_gpio_set_sleepcfg);
+++ /dev/null
-# Copyright 2007 Simtec Electronics
-#
-# Licensed under GPLv2
-
-config S3C2440_CPUFREQ
- bool "S3C2440/S3C2442 CPU Frequency scaling support"
- depends on CPU_FREQ_S3C24XX && (CPU_S3C2440 || CPU_S3C2442)
- default y
- select S3C2410_CPUFREQ_UTILS
- help
- CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
-
-config S3C2440_XTAL_12000000
- bool
- help
- Indicate that the build needs to support 12MHz system
- crystal.
-
-config S3C2440_XTAL_16934400
- bool
- help
- Indicate that the build needs to support 16.9344MHz system
- crystal.
-
-config S3C2440_PLL_12000000
- bool
- depends on S3C2440_CPUFREQ && S3C2440_XTAL_12000000
- default y if CPU_FREQ_S3C24XX_PLL
- help
- PLL tables for S3C2440 or S3C2442 CPUs with 12MHz crystals.
-
-config S3C2440_PLL_16934400
- bool
- depends on S3C2440_CPUFREQ && S3C2440_XTAL_16934400
- default y if CPU_FREQ_S3C24XX_PLL
- help
- PLL tables for S3C2440 or S3C2442 CPUs with 16.934MHz crystals.
+++ /dev/null
-# arch/arm/mach-s3c2440/Makefile
-#
-# Copyright 2007 Simtec Electronics
-#
-# Licensed under GPLv2
-
-obj-y :=
-obj-m :=
-obj-n :=
-obj- :=
-
-obj-$(CONFIG_S3C2440_CPUFREQ) += s3c2440-cpufreq.o
-
-obj-$(CONFIG_S3C2440_PLL_12000000) += s3c2440-pll-12000000.o
-obj-$(CONFIG_S3C2440_PLL_16934400) += s3c2440-pll-16934400.o
+++ /dev/null
-/* linux/arch/arm/plat-s3c24xx/s3c2440-cpufreq.c
- *
- * Copyright (c) 2006-2009 Simtec Electronics
- * http://armlinux.simtec.co.uk/
- * Ben Dooks <ben@simtec.co.uk>
- * Vincent Sanders <vince@simtec.co.uk>
- *
- * S3C2440/S3C2442 CPU Frequency scaling
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <mach/regs-clock.h>
-
-#include <plat/cpu.h>
-#include <plat/cpu-freq-core.h>
-#include <plat/clock.h>
-
-static struct clk *xtal;
-static struct clk *fclk;
-static struct clk *hclk;
-static struct clk *armclk;
-
-/* HDIV: 1, 2, 3, 4, 6, 8 */
-
-static inline int within_khz(unsigned long a, unsigned long b)
-{
- long diff = a - b;
-
- return (diff >= -1000 && diff <= 1000);
-}
-
-/**
- * s3c2440_cpufreq_calcdivs - calculate divider settings
- * @cfg: The cpu frequency settings.
- *
- * Calcualte the divider values for the given frequency settings
- * specified in @cfg. The values are stored in @cfg for later use
- * by the relevant set routine if the request settings can be reached.
- */
-int s3c2440_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
-{
- unsigned int hdiv, pdiv;
- unsigned long hclk, fclk, armclk;
- unsigned long hclk_max;
-
- fclk = cfg->freq.fclk;
- armclk = cfg->freq.armclk;
- hclk_max = cfg->max.hclk;
-
- s3c_freq_dbg("%s: fclk is %lu, armclk %lu, max hclk %lu\n",
- __func__, fclk, armclk, hclk_max);
-
- if (armclk > fclk) {
- printk(KERN_WARNING "%s: armclk > fclk\n", __func__);
- armclk = fclk;
- }
-
- /* if we are in DVS, we need HCLK to be <= ARMCLK */
- if (armclk < fclk && armclk < hclk_max)
- hclk_max = armclk;
-
- for (hdiv = 1; hdiv < 9; hdiv++) {
- if (hdiv == 5 || hdiv == 7)
- hdiv++;
-
- hclk = (fclk / hdiv);
- if (hclk <= hclk_max || within_khz(hclk, hclk_max))
- break;
- }
-
- s3c_freq_dbg("%s: hclk %lu, div %d\n", __func__, hclk, hdiv);
-
- if (hdiv > 8)
- goto invalid;
-
- pdiv = (hclk > cfg->max.pclk) ? 2 : 1;
-
- if ((hclk / pdiv) > cfg->max.pclk)
- pdiv++;
-
- s3c_freq_dbg("%s: pdiv %d\n", __func__, pdiv);
-
- if (pdiv > 2)
- goto invalid;
-
- pdiv *= hdiv;
-
- /* calculate a valid armclk */
-
- if (armclk < hclk)
- armclk = hclk;
-
- /* if we're running armclk lower than fclk, this really means
- * that the system should go into dvs mode, which means that
- * armclk is connected to hclk. */
- if (armclk < fclk) {
- cfg->divs.dvs = 1;
- armclk = hclk;
- } else
- cfg->divs.dvs = 0;
-
- cfg->freq.armclk = armclk;
-
- /* store the result, and then return */
-
- cfg->divs.h_divisor = hdiv;
- cfg->divs.p_divisor = pdiv;
-
- return 0;
-
- invalid:
- return -EINVAL;
-}
-
-#define CAMDIVN_HCLK_HALF (S3C2440_CAMDIVN_HCLK3_HALF | \
- S3C2440_CAMDIVN_HCLK4_HALF)
-
-/**
- * s3c2440_cpufreq_setdivs - set the cpu frequency divider settings
- * @cfg: The cpu frequency settings.
- *
- * Set the divisors from the settings in @cfg, which where generated
- * during the calculation phase by s3c2440_cpufreq_calcdivs().
- */
-static void s3c2440_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
-{
- unsigned long clkdiv, camdiv;
-
- s3c_freq_dbg("%s: divsiors: h=%d, p=%d\n", __func__,
- cfg->divs.h_divisor, cfg->divs.p_divisor);
-
- clkdiv = __raw_readl(S3C2410_CLKDIVN);
- camdiv = __raw_readl(S3C2440_CAMDIVN);
-
- clkdiv &= ~(S3C2440_CLKDIVN_HDIVN_MASK | S3C2440_CLKDIVN_PDIVN);
- camdiv &= ~CAMDIVN_HCLK_HALF;
-
- switch (cfg->divs.h_divisor) {
- case 1:
- clkdiv |= S3C2440_CLKDIVN_HDIVN_1;
- break;
-
- case 2:
- clkdiv |= S3C2440_CLKDIVN_HDIVN_2;
- break;
-
- case 6:
- camdiv |= S3C2440_CAMDIVN_HCLK3_HALF;
- case 3:
- clkdiv |= S3C2440_CLKDIVN_HDIVN_3_6;
- break;
-
- case 8:
- camdiv |= S3C2440_CAMDIVN_HCLK4_HALF;
- case 4:
- clkdiv |= S3C2440_CLKDIVN_HDIVN_4_8;
- break;
-
- default:
- BUG(); /* we don't expect to get here. */
- }
-
- if (cfg->divs.p_divisor != cfg->divs.h_divisor)
- clkdiv |= S3C2440_CLKDIVN_PDIVN;
-
- /* todo - set pclk. */
-
- /* Write the divisors first with hclk intentionally halved so that
- * when we write clkdiv we will under-frequency instead of over. We
- * then make a short delay and remove the hclk halving if necessary.
- */
-
- __raw_writel(camdiv | CAMDIVN_HCLK_HALF, S3C2440_CAMDIVN);
- __raw_writel(clkdiv, S3C2410_CLKDIVN);
-
- ndelay(20);
- __raw_writel(camdiv, S3C2440_CAMDIVN);
-
- clk_set_parent(armclk, cfg->divs.dvs ? hclk : fclk);
-}
-
-static int run_freq_for(unsigned long max_hclk, unsigned long fclk,
- int *divs,
- struct cpufreq_frequency_table *table,
- size_t table_size)
-{
- unsigned long freq;
- int index = 0;
- int div;
-
- for (div = *divs; div > 0; div = *divs++) {
- freq = fclk / div;
-
- if (freq > max_hclk && div != 1)
- continue;
-
- freq /= 1000; /* table is in kHz */
- index = s3c_cpufreq_addfreq(table, index, table_size, freq);
- if (index < 0)
- break;
- }
-
- return index;
-}
-
-static int hclk_divs[] = { 1, 2, 3, 4, 6, 8, -1 };
-
-static int s3c2440_cpufreq_calctable(struct s3c_cpufreq_config *cfg,
- struct cpufreq_frequency_table *table,
- size_t table_size)
-{
- int ret;
-
- WARN_ON(cfg->info == NULL);
- WARN_ON(cfg->board == NULL);
-
- ret = run_freq_for(cfg->info->max.hclk,
- cfg->info->max.fclk,
- hclk_divs,
- table, table_size);
-
- s3c_freq_dbg("%s: returning %d\n", __func__, ret);
-
- return ret;
-}
-
-struct s3c_cpufreq_info s3c2440_cpufreq_info = {
- .max = {
- .fclk = 400000000,
- .hclk = 133333333,
- .pclk = 66666666,
- },
-
- .locktime_m = 300,
- .locktime_u = 300,
- .locktime_bits = 16,
-
- .name = "s3c244x",
- .calc_iotiming = s3c2410_iotiming_calc,
- .set_iotiming = s3c2410_iotiming_set,
- .get_iotiming = s3c2410_iotiming_get,
- .set_fvco = s3c2410_set_fvco,
-
- .set_refresh = s3c2410_cpufreq_setrefresh,
- .set_divs = s3c2440_cpufreq_setdivs,
- .calc_divs = s3c2440_cpufreq_calcdivs,
- .calc_freqtable = s3c2440_cpufreq_calctable,
-
- .resume_clocks = s3c244x_setup_clocks,
-
- .debug_io_show = s3c_cpufreq_debugfs_call(s3c2410_iotiming_debugfs),
-};
-
-static int s3c2440_cpufreq_add(struct device *dev,
- struct subsys_interface *sif)
-{
- xtal = s3c_cpufreq_clk_get(NULL, "xtal");
- hclk = s3c_cpufreq_clk_get(NULL, "hclk");
- fclk = s3c_cpufreq_clk_get(NULL, "fclk");
- armclk = s3c_cpufreq_clk_get(NULL, "armclk");
-
- if (IS_ERR(xtal) || IS_ERR(hclk) || IS_ERR(fclk) || IS_ERR(armclk)) {
- printk(KERN_ERR "%s: failed to get clocks\n", __func__);
- return -ENOENT;
- }
-
- return s3c_cpufreq_register(&s3c2440_cpufreq_info);
-}
-
-static struct subsys_interface s3c2440_cpufreq_interface = {
- .name = "s3c2440_cpufreq",
- .subsys = &s3c2440_subsys,
- .add_dev = s3c2440_cpufreq_add,
-};
-
-static int s3c2440_cpufreq_init(void)
-{
- return subsys_interface_register(&s3c2440_cpufreq_interface);
-}
-
-/* arch_initcall adds the clocks we need, so use subsys_initcall. */
-subsys_initcall(s3c2440_cpufreq_init);
-
-static struct subsys_interface s3c2442_cpufreq_interface = {
- .name = "s3c2442_cpufreq",
- .subsys = &s3c2442_subsys,
- .add_dev = s3c2440_cpufreq_add,
-};
-
-static int s3c2442_cpufreq_init(void)
-{
- return subsys_interface_register(&s3c2442_cpufreq_interface);
-}
-
-subsys_initcall(s3c2442_cpufreq_init);
+++ /dev/null
-/* arch/arm/mach-s3c2440/s3c2440-pll-12000000.c
- *
- * Copyright (c) 2006-2007 Simtec Electronics
- * http://armlinux.simtec.co.uk/
- * Ben Dooks <ben@simtec.co.uk>
- * Vincent Sanders <vince@arm.linux.org.uk>
- *
- * S3C2440/S3C2442 CPU PLL tables (12MHz Crystal)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-
-#include <plat/cpu.h>
-#include <plat/cpu-freq-core.h>
-
-static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = {
- { .frequency = 75000000, .index = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */
- { .frequency = 80000000, .index = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */
- { .frequency = 90000000, .index = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */
- { .frequency = 100000000, .index = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */
- { .frequency = 110000000, .index = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */
- { .frequency = 120000000, .index = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */
- { .frequency = 150000000, .index = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */
- { .frequency = 160000000, .index = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */
- { .frequency = 170000000, .index = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */
- { .frequency = 180000000, .index = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */
- { .frequency = 190000000, .index = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */
- { .frequency = 200000000, .index = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */
- { .frequency = 210000000, .index = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */
- { .frequency = 220000000, .index = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */
- { .frequency = 230000000, .index = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */
- { .frequency = 240000000, .index = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */
- { .frequency = 300000000, .index = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */
- { .frequency = 310000000, .index = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */
- { .frequency = 320000000, .index = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */
- { .frequency = 330000000, .index = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */
- { .frequency = 340000000, .index = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */
- { .frequency = 350000000, .index = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */
- { .frequency = 360000000, .index = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */
- { .frequency = 370000000, .index = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */
- { .frequency = 380000000, .index = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */
- { .frequency = 390000000, .index = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */
- { .frequency = 400000000, .index = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */
-};
-
-static int s3c2440_plls12_add(struct device *dev, struct subsys_interface *sif)
-{
- struct clk *xtal_clk;
- unsigned long xtal;
-
- xtal_clk = clk_get(NULL, "xtal");
- if (IS_ERR(xtal_clk))
- return PTR_ERR(xtal_clk);
-
- xtal = clk_get_rate(xtal_clk);
- clk_put(xtal_clk);
-
- if (xtal == 12000000) {
- printk(KERN_INFO "Using PLL table for 12MHz crystal\n");
- return s3c_plltab_register(s3c2440_plls_12,
- ARRAY_SIZE(s3c2440_plls_12));
- }
-
- return 0;
-}
-
-static struct subsys_interface s3c2440_plls12_interface = {
- .name = "s3c2440_plls12",
- .subsys = &s3c2440_subsys,
- .add_dev = s3c2440_plls12_add,
-};
-
-static int __init s3c2440_pll_12mhz(void)
-{
- return subsys_interface_register(&s3c2440_plls12_interface);
-
-}
-
-arch_initcall(s3c2440_pll_12mhz);
-
-static struct subsys_interface s3c2442_plls12_interface = {
- .name = "s3c2442_plls12",
- .subsys = &s3c2442_subsys,
- .add_dev = s3c2440_plls12_add,
-};
-
-static int __init s3c2442_pll_12mhz(void)
-{
- return subsys_interface_register(&s3c2442_plls12_interface);
-
-}
-
-arch_initcall(s3c2442_pll_12mhz);
+++ /dev/null
-/* arch/arm/mach-s3c2440/s3c2440-pll-16934400.c
- *
- * Copyright (c) 2006-2008 Simtec Electronics
- * http://armlinux.simtec.co.uk/
- * Ben Dooks <ben@simtec.co.uk>
- * Vincent Sanders <vince@arm.linux.org.uk>
- *
- * S3C2440/S3C2442 CPU PLL tables (16.93444MHz Crystal)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-
-#include <plat/cpu.h>
-#include <plat/cpu-freq-core.h>
-
-static struct cpufreq_frequency_table s3c2440_plls_169344[] __initdata = {
- { .frequency = 78019200, .index = PLLVAL(121, 5, 3), }, /* FVco 624.153600 */
- { .frequency = 84067200, .index = PLLVAL(131, 5, 3), }, /* FVco 672.537600 */
- { .frequency = 90115200, .index = PLLVAL(141, 5, 3), }, /* FVco 720.921600 */
- { .frequency = 96163200, .index = PLLVAL(151, 5, 3), }, /* FVco 769.305600 */
- { .frequency = 102135600, .index = PLLVAL(185, 6, 3), }, /* FVco 817.084800 */
- { .frequency = 108259200, .index = PLLVAL(171, 5, 3), }, /* FVco 866.073600 */
- { .frequency = 114307200, .index = PLLVAL(127, 3, 3), }, /* FVco 914.457600 */
- { .frequency = 120234240, .index = PLLVAL(134, 3, 3), }, /* FVco 961.873920 */
- { .frequency = 126161280, .index = PLLVAL(141, 3, 3), }, /* FVco 1009.290240 */
- { .frequency = 132088320, .index = PLLVAL(148, 3, 3), }, /* FVco 1056.706560 */
- { .frequency = 138015360, .index = PLLVAL(155, 3, 3), }, /* FVco 1104.122880 */
- { .frequency = 144789120, .index = PLLVAL(163, 3, 3), }, /* FVco 1158.312960 */
- { .frequency = 150100363, .index = PLLVAL(187, 9, 2), }, /* FVco 600.401454 */
- { .frequency = 156038400, .index = PLLVAL(121, 5, 2), }, /* FVco 624.153600 */
- { .frequency = 162086400, .index = PLLVAL(126, 5, 2), }, /* FVco 648.345600 */
- { .frequency = 168134400, .index = PLLVAL(131, 5, 2), }, /* FVco 672.537600 */
- { .frequency = 174048000, .index = PLLVAL(177, 7, 2), }, /* FVco 696.192000 */
- { .frequency = 180230400, .index = PLLVAL(141, 5, 2), }, /* FVco 720.921600 */
- { .frequency = 186278400, .index = PLLVAL(124, 4, 2), }, /* FVco 745.113600 */
- { .frequency = 192326400, .index = PLLVAL(151, 5, 2), }, /* FVco 769.305600 */
- { .frequency = 198132480, .index = PLLVAL(109, 3, 2), }, /* FVco 792.529920 */
- { .frequency = 204271200, .index = PLLVAL(185, 6, 2), }, /* FVco 817.084800 */
- { .frequency = 210268800, .index = PLLVAL(141, 4, 2), }, /* FVco 841.075200 */
- { .frequency = 216518400, .index = PLLVAL(171, 5, 2), }, /* FVco 866.073600 */
- { .frequency = 222264000, .index = PLLVAL(97, 2, 2), }, /* FVco 889.056000 */
- { .frequency = 228614400, .index = PLLVAL(127, 3, 2), }, /* FVco 914.457600 */
- { .frequency = 234259200, .index = PLLVAL(158, 4, 2), }, /* FVco 937.036800 */
- { .frequency = 240468480, .index = PLLVAL(134, 3, 2), }, /* FVco 961.873920 */
- { .frequency = 246960000, .index = PLLVAL(167, 4, 2), }, /* FVco 987.840000 */
- { .frequency = 252322560, .index = PLLVAL(141, 3, 2), }, /* FVco 1009.290240 */
- { .frequency = 258249600, .index = PLLVAL(114, 2, 2), }, /* FVco 1032.998400 */
- { .frequency = 264176640, .index = PLLVAL(148, 3, 2), }, /* FVco 1056.706560 */
- { .frequency = 270950400, .index = PLLVAL(120, 2, 2), }, /* FVco 1083.801600 */
- { .frequency = 276030720, .index = PLLVAL(155, 3, 2), }, /* FVco 1104.122880 */
- { .frequency = 282240000, .index = PLLVAL(92, 1, 2), }, /* FVco 1128.960000 */
- { .frequency = 289578240, .index = PLLVAL(163, 3, 2), }, /* FVco 1158.312960 */
- { .frequency = 294235200, .index = PLLVAL(131, 2, 2), }, /* FVco 1176.940800 */
- { .frequency = 300200727, .index = PLLVAL(187, 9, 1), }, /* FVco 600.401454 */
- { .frequency = 306358690, .index = PLLVAL(191, 9, 1), }, /* FVco 612.717380 */
- { .frequency = 312076800, .index = PLLVAL(121, 5, 1), }, /* FVco 624.153600 */
- { .frequency = 318366720, .index = PLLVAL(86, 3, 1), }, /* FVco 636.733440 */
- { .frequency = 324172800, .index = PLLVAL(126, 5, 1), }, /* FVco 648.345600 */
- { .frequency = 330220800, .index = PLLVAL(109, 4, 1), }, /* FVco 660.441600 */
- { .frequency = 336268800, .index = PLLVAL(131, 5, 1), }, /* FVco 672.537600 */
- { .frequency = 342074880, .index = PLLVAL(93, 3, 1), }, /* FVco 684.149760 */
- { .frequency = 348096000, .index = PLLVAL(177, 7, 1), }, /* FVco 696.192000 */
- { .frequency = 355622400, .index = PLLVAL(118, 4, 1), }, /* FVco 711.244800 */
- { .frequency = 360460800, .index = PLLVAL(141, 5, 1), }, /* FVco 720.921600 */
- { .frequency = 366206400, .index = PLLVAL(165, 6, 1), }, /* FVco 732.412800 */
- { .frequency = 372556800, .index = PLLVAL(124, 4, 1), }, /* FVco 745.113600 */
- { .frequency = 378201600, .index = PLLVAL(126, 4, 1), }, /* FVco 756.403200 */
- { .frequency = 384652800, .index = PLLVAL(151, 5, 1), }, /* FVco 769.305600 */
- { .frequency = 391608000, .index = PLLVAL(177, 6, 1), }, /* FVco 783.216000 */
- { .frequency = 396264960, .index = PLLVAL(109, 3, 1), }, /* FVco 792.529920 */
- { .frequency = 402192000, .index = PLLVAL(87, 2, 1), }, /* FVco 804.384000 */
-};
-
-static int s3c2440_plls169344_add(struct device *dev,
- struct subsys_interface *sif)
-{
- struct clk *xtal_clk;
- unsigned long xtal;
-
- xtal_clk = clk_get(NULL, "xtal");
- if (IS_ERR(xtal_clk))
- return PTR_ERR(xtal_clk);
-
- xtal = clk_get_rate(xtal_clk);
- clk_put(xtal_clk);
-
- if (xtal == 169344000) {
- printk(KERN_INFO "Using PLL table for 16.9344MHz crystal\n");
- return s3c_plltab_register(s3c2440_plls_169344,
- ARRAY_SIZE(s3c2440_plls_169344));
- }
-
- return 0;
-}
-
-static struct subsys_interface s3c2440_plls169344_interface = {
- .name = "s3c2440_plls169344",
- .subsys = &s3c2440_subsys,
- .add_dev = s3c2440_plls169344_add,
-};
-
-static int __init s3c2440_pll_16934400(void)
-{
- return subsys_interface_register(&s3c2440_plls169344_interface);
-}
-
-arch_initcall(s3c2440_pll_16934400);
-
-static struct subsys_interface s3c2442_plls169344_interface = {
- .name = "s3c2442_plls169344",
- .subsys = &s3c2442_subsys,
- .add_dev = s3c2440_plls169344_add,
-};
-
-static int __init s3c2442_pll_16934400(void)
-{
- return subsys_interface_register(&s3c2442_plls169344_interface);
-}
-
-arch_initcall(s3c2442_pll_16934400);
if CPU_S3C2410
+config S3C2410_CPUFREQ
+ bool
+ depends on CPU_FREQ_S3C24XX && CPU_S3C2410
+ select S3C2410_CPUFREQ_UTILS
+ help
+ CPU Frequency scaling support for S3C2410
+
+config S3C2410_PLL
+ bool
+ depends on S3C2410_CPUFREQ && CPU_FREQ_S3C24XX_PLL
+ default y
+ help
+ Select the PLL table for the S3C2410
+
config S3C24XX_SIMTEC_NOR
bool
help
!CPU_S3C2443 && CPU_S3C2412
default y
+config S3C2412_CPUFREQ
+ bool
+ depends on CPU_FREQ_S3C24XX && CPU_S3C2412
+ default y
+ select S3C2412_IOTIMING
+ help
+ CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
+
config S3C2412_DMA
bool
help
if CPU_S3C2440
+config S3C2440_CPUFREQ
+ bool "S3C2440/S3C2442 CPU Frequency scaling support"
+ depends on CPU_FREQ_S3C24XX && (CPU_S3C2440 || CPU_S3C2442)
+ default y
+ select S3C2410_CPUFREQ_UTILS
+ help
+ CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
+
config S3C2440_DMA
bool
help
Support for S3C2440 specific DMA code5A
+config S3C2440_XTAL_12000000
+ bool
+ help
+ Indicate that the build needs to support 12MHz system
+ crystal.
+
+config S3C2440_XTAL_16934400
+ bool
+ help
+ Indicate that the build needs to support 16.9344MHz system
+ crystal.
+
+config S3C2440_PLL_12000000
+ bool
+ depends on S3C2440_CPUFREQ && S3C2440_XTAL_12000000
+ default y if CPU_FREQ_S3C24XX_PLL
+ help
+ PLL tables for S3C2440 or S3C2442 CPUs with 12MHz crystals.
+
+config S3C2440_PLL_16934400
+ bool
+ depends on S3C2440_CPUFREQ && S3C2440_XTAL_16934400
+ default y if CPU_FREQ_S3C24XX_PLL
+ help
+ PLL tables for S3C2440 or S3C2442 CPUs with 16.934MHz crystals.
+
comment "S3C2440 Boards"
#
obj-y += common.o
obj-$(CONFIG_CPU_S3C2410) += s3c2410.o
+obj-$(CONFIG_S3C2410_CPUFREQ) += cpufreq-s3c2410.o
obj-$(CONFIG_S3C2410_DMA) += dma-s3c2410.o
+obj-$(CONFIG_S3C2410_PLL) += pll-s3c2410.o
obj-$(CONFIG_S3C2410_PM) += pm-s3c2410.o sleep-s3c2410.o
obj-$(CONFIG_CPU_S3C2412) += s3c2412.o irq-s3c2412.o clock-s3c2412.o
+obj-$(CONFIG_S3C2412_CPUFREQ) += cpufreq-s3c2412.o
obj-$(CONFIG_S3C2412_DMA) += dma-s3c2412.o
obj-$(CONFIG_S3C2412_PM) += pm-s3c2412.o
obj-$(CONFIG_S3C2412_PM_SLEEP) += sleep-s3c2412.o
obj-$(CONFIG_CPU_S3C2440) += s3c2440.o irq-s3c2440.o clock-s3c2440.o
obj-$(CONFIG_CPU_S3C2442) += s3c2442.o
obj-$(CONFIG_CPU_S3C244X) += s3c244x.o irq-s3c244x.o clock-s3c244x.o
+obj-$(CONFIG_S3C2440_CPUFREQ) += cpufreq-s3c2440.o
obj-$(CONFIG_S3C2440_DMA) += dma-s3c2440.o
+obj-$(CONFIG_S3C2440_PLL_12000000) += pll-s3c2440-12000000.o
+obj-$(CONFIG_S3C2440_PLL_16934400) += pll-s3c2440-16934400.o
obj-$(CONFIG_CPU_S3C2443) += s3c2443.o irq-s3c2443.o clock-s3c2443.o
--- /dev/null
+/*
+ * Copyright (c) 2006-2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2410 CPU Frequency scaling
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/cpufreq.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <mach/regs-clock.h>
+
+#include <plat/cpu.h>
+#include <plat/clock.h>
+#include <plat/cpu-freq-core.h>
+
+/* Note, 2410A has an extra mode for 1:4:4 ratio, bit 2 of CLKDIV */
+
+static void s3c2410_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
+{
+ u32 clkdiv = 0;
+
+ if (cfg->divs.h_divisor == 2)
+ clkdiv |= S3C2410_CLKDIVN_HDIVN;
+
+ if (cfg->divs.p_divisor != cfg->divs.h_divisor)
+ clkdiv |= S3C2410_CLKDIVN_PDIVN;
+
+ __raw_writel(clkdiv, S3C2410_CLKDIVN);
+}
+
+static int s3c2410_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
+{
+ unsigned long hclk, fclk, pclk;
+ unsigned int hdiv, pdiv;
+ unsigned long hclk_max;
+
+ fclk = cfg->freq.fclk;
+ hclk_max = cfg->max.hclk;
+
+ cfg->freq.armclk = fclk;
+
+ s3c_freq_dbg("%s: fclk is %lu, max hclk %lu\n",
+ __func__, fclk, hclk_max);
+
+ hdiv = (fclk > cfg->max.hclk) ? 2 : 1;
+ hclk = fclk / hdiv;
+
+ if (hclk > cfg->max.hclk) {
+ s3c_freq_dbg("%s: hclk too big\n", __func__);
+ return -EINVAL;
+ }
+
+ pdiv = (hclk > cfg->max.pclk) ? 2 : 1;
+ pclk = hclk / pdiv;
+
+ if (pclk > cfg->max.pclk) {
+ s3c_freq_dbg("%s: pclk too big\n", __func__);
+ return -EINVAL;
+ }
+
+ pdiv *= hdiv;
+
+ /* record the result */
+ cfg->divs.p_divisor = pdiv;
+ cfg->divs.h_divisor = hdiv;
+
+ return 0;
+}
+
+static struct s3c_cpufreq_info s3c2410_cpufreq_info = {
+ .max = {
+ .fclk = 200000000,
+ .hclk = 100000000,
+ .pclk = 50000000,
+ },
+
+ /* transition latency is about 5ms worst-case, so
+ * set 10ms to be sure */
+ .latency = 10000000,
+
+ .locktime_m = 150,
+ .locktime_u = 150,
+ .locktime_bits = 12,
+
+ .need_pll = 1,
+
+ .name = "s3c2410",
+ .calc_iotiming = s3c2410_iotiming_calc,
+ .set_iotiming = s3c2410_iotiming_set,
+ .get_iotiming = s3c2410_iotiming_get,
+ .resume_clocks = s3c2410_setup_clocks,
+
+ .set_fvco = s3c2410_set_fvco,
+ .set_refresh = s3c2410_cpufreq_setrefresh,
+ .set_divs = s3c2410_cpufreq_setdivs,
+ .calc_divs = s3c2410_cpufreq_calcdivs,
+
+ .debug_io_show = s3c_cpufreq_debugfs_call(s3c2410_iotiming_debugfs),
+};
+
+static int s3c2410_cpufreq_add(struct device *dev,
+ struct subsys_interface *sif)
+{
+ return s3c_cpufreq_register(&s3c2410_cpufreq_info);
+}
+
+static struct subsys_interface s3c2410_cpufreq_interface = {
+ .name = "s3c2410_cpufreq",
+ .subsys = &s3c2410_subsys,
+ .add_dev = s3c2410_cpufreq_add,
+};
+
+static int __init s3c2410_cpufreq_init(void)
+{
+ return subsys_interface_register(&s3c2410_cpufreq_interface);
+}
+arch_initcall(s3c2410_cpufreq_init);
+
+static int s3c2410a_cpufreq_add(struct device *dev,
+ struct subsys_interface *sif)
+{
+ /* alter the maximum freq settings for S3C2410A. If a board knows
+ * it only has a maximum of 200, then it should register its own
+ * limits. */
+
+ s3c2410_cpufreq_info.max.fclk = 266000000;
+ s3c2410_cpufreq_info.max.hclk = 133000000;
+ s3c2410_cpufreq_info.max.pclk = 66500000;
+ s3c2410_cpufreq_info.name = "s3c2410a";
+
+ return s3c2410_cpufreq_add(dev, sif);
+}
+
+static struct subsys_interface s3c2410a_cpufreq_interface = {
+ .name = "s3c2410a_cpufreq",
+ .subsys = &s3c2410a_subsys,
+ .add_dev = s3c2410a_cpufreq_add,
+};
+
+static int __init s3c2410a_cpufreq_init(void)
+{
+ return subsys_interface_register(&s3c2410a_cpufreq_interface);
+}
+arch_initcall(s3c2410a_cpufreq_init);
--- /dev/null
+/*
+ * Copyright 2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2412 CPU Frequency scalling
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/cpufreq.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <mach/regs-clock.h>
+#include <mach/regs-s3c2412-mem.h>
+
+#include <plat/cpu.h>
+#include <plat/clock.h>
+#include <plat/cpu-freq-core.h>
+
+/* our clock resources. */
+static struct clk *xtal;
+static struct clk *fclk;
+static struct clk *hclk;
+static struct clk *armclk;
+
+/* HDIV: 1, 2, 3, 4, 6, 8 */
+
+static int s3c2412_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
+{
+ unsigned int hdiv, pdiv, armdiv, dvs;
+ unsigned long hclk, fclk, armclk, armdiv_clk;
+ unsigned long hclk_max;
+
+ fclk = cfg->freq.fclk;
+ armclk = cfg->freq.armclk;
+ hclk_max = cfg->max.hclk;
+
+ /* We can't run hclk above armclk as at the best we have to
+ * have armclk and hclk in dvs mode. */
+
+ if (hclk_max > armclk)
+ hclk_max = armclk;
+
+ s3c_freq_dbg("%s: fclk=%lu, armclk=%lu, hclk_max=%lu\n",
+ __func__, fclk, armclk, hclk_max);
+ s3c_freq_dbg("%s: want f=%lu, arm=%lu, h=%lu, p=%lu\n",
+ __func__, cfg->freq.fclk, cfg->freq.armclk,
+ cfg->freq.hclk, cfg->freq.pclk);
+
+ armdiv = fclk / armclk;
+
+ if (armdiv < 1)
+ armdiv = 1;
+ if (armdiv > 2)
+ armdiv = 2;
+
+ cfg->divs.arm_divisor = armdiv;
+ armdiv_clk = fclk / armdiv;
+
+ hdiv = armdiv_clk / hclk_max;
+ if (hdiv < 1)
+ hdiv = 1;
+
+ cfg->freq.hclk = hclk = armdiv_clk / hdiv;
+
+ /* set dvs depending on whether we reached armclk or not. */
+ cfg->divs.dvs = dvs = armclk < armdiv_clk;
+
+ /* update the actual armclk we achieved. */
+ cfg->freq.armclk = dvs ? hclk : armdiv_clk;
+
+ s3c_freq_dbg("%s: armclk %lu, hclk %lu, armdiv %d, hdiv %d, dvs %d\n",
+ __func__, armclk, hclk, armdiv, hdiv, cfg->divs.dvs);
+
+ if (hdiv > 4)
+ goto invalid;
+
+ pdiv = (hclk > cfg->max.pclk) ? 2 : 1;
+
+ if ((hclk / pdiv) > cfg->max.pclk)
+ pdiv++;
+
+ cfg->freq.pclk = hclk / pdiv;
+
+ s3c_freq_dbg("%s: pdiv %d\n", __func__, pdiv);
+
+ if (pdiv > 2)
+ goto invalid;
+
+ pdiv *= hdiv;
+
+ /* store the result, and then return */
+
+ cfg->divs.h_divisor = hdiv * armdiv;
+ cfg->divs.p_divisor = pdiv * armdiv;
+
+ return 0;
+
+invalid:
+ return -EINVAL;
+}
+
+static void s3c2412_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
+{
+ unsigned long clkdiv;
+ unsigned long olddiv;
+
+ olddiv = clkdiv = __raw_readl(S3C2410_CLKDIVN);
+
+ /* clear off current clock info */
+
+ clkdiv &= ~S3C2412_CLKDIVN_ARMDIVN;
+ clkdiv &= ~S3C2412_CLKDIVN_HDIVN_MASK;
+ clkdiv &= ~S3C2412_CLKDIVN_PDIVN;
+
+ if (cfg->divs.arm_divisor == 2)
+ clkdiv |= S3C2412_CLKDIVN_ARMDIVN;
+
+ clkdiv |= ((cfg->divs.h_divisor / cfg->divs.arm_divisor) - 1);
+
+ if (cfg->divs.p_divisor != cfg->divs.h_divisor)
+ clkdiv |= S3C2412_CLKDIVN_PDIVN;
+
+ s3c_freq_dbg("%s: div %08lx => %08lx\n", __func__, olddiv, clkdiv);
+ __raw_writel(clkdiv, S3C2410_CLKDIVN);
+
+ clk_set_parent(armclk, cfg->divs.dvs ? hclk : fclk);
+}
+
+static void s3c2412_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg)
+{
+ struct s3c_cpufreq_board *board = cfg->board;
+ unsigned long refresh;
+
+ s3c_freq_dbg("%s: refresh %u ns, hclk %lu\n", __func__,
+ board->refresh, cfg->freq.hclk);
+
+ /* Reduce both the refresh time (in ns) and the frequency (in MHz)
+ * by 10 each to ensure that we do not overflow 32 bit numbers. This
+ * should work for HCLK up to 133MHz and refresh period up to 30usec.
+ */
+
+ refresh = (board->refresh / 10);
+ refresh *= (cfg->freq.hclk / 100);
+ refresh /= (1 * 1000 * 1000); /* 10^6 */
+
+ s3c_freq_dbg("%s: setting refresh 0x%08lx\n", __func__, refresh);
+ __raw_writel(refresh, S3C2412_REFRESH);
+}
+
+/* set the default cpu frequency information, based on an 200MHz part
+ * as we have no other way of detecting the speed rating in software.
+ */
+
+static struct s3c_cpufreq_info s3c2412_cpufreq_info = {
+ .max = {
+ .fclk = 200000000,
+ .hclk = 100000000,
+ .pclk = 50000000,
+ },
+
+ .latency = 5000000, /* 5ms */
+
+ .locktime_m = 150,
+ .locktime_u = 150,
+ .locktime_bits = 16,
+
+ .name = "s3c2412",
+ .set_refresh = s3c2412_cpufreq_setrefresh,
+ .set_divs = s3c2412_cpufreq_setdivs,
+ .calc_divs = s3c2412_cpufreq_calcdivs,
+
+ .calc_iotiming = s3c2412_iotiming_calc,
+ .set_iotiming = s3c2412_iotiming_set,
+ .get_iotiming = s3c2412_iotiming_get,
+
+ .resume_clocks = s3c2412_setup_clocks,
+
+ .debug_io_show = s3c_cpufreq_debugfs_call(s3c2412_iotiming_debugfs),
+};
+
+static int s3c2412_cpufreq_add(struct device *dev,
+ struct subsys_interface *sif)
+{
+ unsigned long fclk_rate;
+
+ hclk = clk_get(NULL, "hclk");
+ if (IS_ERR(hclk)) {
+ printk(KERN_ERR "%s: cannot find hclk clock\n", __func__);
+ return -ENOENT;
+ }
+
+ fclk = clk_get(NULL, "fclk");
+ if (IS_ERR(fclk)) {
+ printk(KERN_ERR "%s: cannot find fclk clock\n", __func__);
+ goto err_fclk;
+ }
+
+ fclk_rate = clk_get_rate(fclk);
+ if (fclk_rate > 200000000) {
+ printk(KERN_INFO
+ "%s: fclk %ld MHz, assuming 266MHz capable part\n",
+ __func__, fclk_rate / 1000000);
+ s3c2412_cpufreq_info.max.fclk = 266000000;
+ s3c2412_cpufreq_info.max.hclk = 133000000;
+ s3c2412_cpufreq_info.max.pclk = 66000000;
+ }
+
+ armclk = clk_get(NULL, "armclk");
+ if (IS_ERR(armclk)) {
+ printk(KERN_ERR "%s: cannot find arm clock\n", __func__);
+ goto err_armclk;
+ }
+
+ xtal = clk_get(NULL, "xtal");
+ if (IS_ERR(xtal)) {
+ printk(KERN_ERR "%s: cannot find xtal clock\n", __func__);
+ goto err_xtal;
+ }
+
+ return s3c_cpufreq_register(&s3c2412_cpufreq_info);
+
+err_xtal:
+ clk_put(armclk);
+err_armclk:
+ clk_put(fclk);
+err_fclk:
+ clk_put(hclk);
+
+ return -ENOENT;
+}
+
+static struct subsys_interface s3c2412_cpufreq_interface = {
+ .name = "s3c2412_cpufreq",
+ .subsys = &s3c2412_subsys,
+ .add_dev = s3c2412_cpufreq_add,
+};
+
+static int s3c2412_cpufreq_init(void)
+{
+ return subsys_interface_register(&s3c2412_cpufreq_interface);
+}
+arch_initcall(s3c2412_cpufreq_init);
--- /dev/null
+/*
+ * Copyright (c) 2006-2009 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ * Vincent Sanders <vince@simtec.co.uk>
+ *
+ * S3C2440/S3C2442 CPU Frequency scaling
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/cpufreq.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <mach/regs-clock.h>
+
+#include <plat/cpu.h>
+#include <plat/cpu-freq-core.h>
+#include <plat/clock.h>
+
+static struct clk *xtal;
+static struct clk *fclk;
+static struct clk *hclk;
+static struct clk *armclk;
+
+/* HDIV: 1, 2, 3, 4, 6, 8 */
+
+static inline int within_khz(unsigned long a, unsigned long b)
+{
+ long diff = a - b;
+
+ return (diff >= -1000 && diff <= 1000);
+}
+
+/**
+ * s3c2440_cpufreq_calcdivs - calculate divider settings
+ * @cfg: The cpu frequency settings.
+ *
+ * Calcualte the divider values for the given frequency settings
+ * specified in @cfg. The values are stored in @cfg for later use
+ * by the relevant set routine if the request settings can be reached.
+ */
+int s3c2440_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
+{
+ unsigned int hdiv, pdiv;
+ unsigned long hclk, fclk, armclk;
+ unsigned long hclk_max;
+
+ fclk = cfg->freq.fclk;
+ armclk = cfg->freq.armclk;
+ hclk_max = cfg->max.hclk;
+
+ s3c_freq_dbg("%s: fclk is %lu, armclk %lu, max hclk %lu\n",
+ __func__, fclk, armclk, hclk_max);
+
+ if (armclk > fclk) {
+ printk(KERN_WARNING "%s: armclk > fclk\n", __func__);
+ armclk = fclk;
+ }
+
+ /* if we are in DVS, we need HCLK to be <= ARMCLK */
+ if (armclk < fclk && armclk < hclk_max)
+ hclk_max = armclk;
+
+ for (hdiv = 1; hdiv < 9; hdiv++) {
+ if (hdiv == 5 || hdiv == 7)
+ hdiv++;
+
+ hclk = (fclk / hdiv);
+ if (hclk <= hclk_max || within_khz(hclk, hclk_max))
+ break;
+ }
+
+ s3c_freq_dbg("%s: hclk %lu, div %d\n", __func__, hclk, hdiv);
+
+ if (hdiv > 8)
+ goto invalid;
+
+ pdiv = (hclk > cfg->max.pclk) ? 2 : 1;
+
+ if ((hclk / pdiv) > cfg->max.pclk)
+ pdiv++;
+
+ s3c_freq_dbg("%s: pdiv %d\n", __func__, pdiv);
+
+ if (pdiv > 2)
+ goto invalid;
+
+ pdiv *= hdiv;
+
+ /* calculate a valid armclk */
+
+ if (armclk < hclk)
+ armclk = hclk;
+
+ /* if we're running armclk lower than fclk, this really means
+ * that the system should go into dvs mode, which means that
+ * armclk is connected to hclk. */
+ if (armclk < fclk) {
+ cfg->divs.dvs = 1;
+ armclk = hclk;
+ } else
+ cfg->divs.dvs = 0;
+
+ cfg->freq.armclk = armclk;
+
+ /* store the result, and then return */
+
+ cfg->divs.h_divisor = hdiv;
+ cfg->divs.p_divisor = pdiv;
+
+ return 0;
+
+ invalid:
+ return -EINVAL;
+}
+
+#define CAMDIVN_HCLK_HALF (S3C2440_CAMDIVN_HCLK3_HALF | \
+ S3C2440_CAMDIVN_HCLK4_HALF)
+
+/**
+ * s3c2440_cpufreq_setdivs - set the cpu frequency divider settings
+ * @cfg: The cpu frequency settings.
+ *
+ * Set the divisors from the settings in @cfg, which where generated
+ * during the calculation phase by s3c2440_cpufreq_calcdivs().
+ */
+static void s3c2440_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
+{
+ unsigned long clkdiv, camdiv;
+
+ s3c_freq_dbg("%s: divsiors: h=%d, p=%d\n", __func__,
+ cfg->divs.h_divisor, cfg->divs.p_divisor);
+
+ clkdiv = __raw_readl(S3C2410_CLKDIVN);
+ camdiv = __raw_readl(S3C2440_CAMDIVN);
+
+ clkdiv &= ~(S3C2440_CLKDIVN_HDIVN_MASK | S3C2440_CLKDIVN_PDIVN);
+ camdiv &= ~CAMDIVN_HCLK_HALF;
+
+ switch (cfg->divs.h_divisor) {
+ case 1:
+ clkdiv |= S3C2440_CLKDIVN_HDIVN_1;
+ break;
+
+ case 2:
+ clkdiv |= S3C2440_CLKDIVN_HDIVN_2;
+ break;
+
+ case 6:
+ camdiv |= S3C2440_CAMDIVN_HCLK3_HALF;
+ case 3:
+ clkdiv |= S3C2440_CLKDIVN_HDIVN_3_6;
+ break;
+
+ case 8:
+ camdiv |= S3C2440_CAMDIVN_HCLK4_HALF;
+ case 4:
+ clkdiv |= S3C2440_CLKDIVN_HDIVN_4_8;
+ break;
+
+ default:
+ BUG(); /* we don't expect to get here. */
+ }
+
+ if (cfg->divs.p_divisor != cfg->divs.h_divisor)
+ clkdiv |= S3C2440_CLKDIVN_PDIVN;
+
+ /* todo - set pclk. */
+
+ /* Write the divisors first with hclk intentionally halved so that
+ * when we write clkdiv we will under-frequency instead of over. We
+ * then make a short delay and remove the hclk halving if necessary.
+ */
+
+ __raw_writel(camdiv | CAMDIVN_HCLK_HALF, S3C2440_CAMDIVN);
+ __raw_writel(clkdiv, S3C2410_CLKDIVN);
+
+ ndelay(20);
+ __raw_writel(camdiv, S3C2440_CAMDIVN);
+
+ clk_set_parent(armclk, cfg->divs.dvs ? hclk : fclk);
+}
+
+static int run_freq_for(unsigned long max_hclk, unsigned long fclk,
+ int *divs,
+ struct cpufreq_frequency_table *table,
+ size_t table_size)
+{
+ unsigned long freq;
+ int index = 0;
+ int div;
+
+ for (div = *divs; div > 0; div = *divs++) {
+ freq = fclk / div;
+
+ if (freq > max_hclk && div != 1)
+ continue;
+
+ freq /= 1000; /* table is in kHz */
+ index = s3c_cpufreq_addfreq(table, index, table_size, freq);
+ if (index < 0)
+ break;
+ }
+
+ return index;
+}
+
+static int hclk_divs[] = { 1, 2, 3, 4, 6, 8, -1 };
+
+static int s3c2440_cpufreq_calctable(struct s3c_cpufreq_config *cfg,
+ struct cpufreq_frequency_table *table,
+ size_t table_size)
+{
+ int ret;
+
+ WARN_ON(cfg->info == NULL);
+ WARN_ON(cfg->board == NULL);
+
+ ret = run_freq_for(cfg->info->max.hclk,
+ cfg->info->max.fclk,
+ hclk_divs,
+ table, table_size);
+
+ s3c_freq_dbg("%s: returning %d\n", __func__, ret);
+
+ return ret;
+}
+
+struct s3c_cpufreq_info s3c2440_cpufreq_info = {
+ .max = {
+ .fclk = 400000000,
+ .hclk = 133333333,
+ .pclk = 66666666,
+ },
+
+ .locktime_m = 300,
+ .locktime_u = 300,
+ .locktime_bits = 16,
+
+ .name = "s3c244x",
+ .calc_iotiming = s3c2410_iotiming_calc,
+ .set_iotiming = s3c2410_iotiming_set,
+ .get_iotiming = s3c2410_iotiming_get,
+ .set_fvco = s3c2410_set_fvco,
+
+ .set_refresh = s3c2410_cpufreq_setrefresh,
+ .set_divs = s3c2440_cpufreq_setdivs,
+ .calc_divs = s3c2440_cpufreq_calcdivs,
+ .calc_freqtable = s3c2440_cpufreq_calctable,
+
+ .resume_clocks = s3c244x_setup_clocks,
+
+ .debug_io_show = s3c_cpufreq_debugfs_call(s3c2410_iotiming_debugfs),
+};
+
+static int s3c2440_cpufreq_add(struct device *dev,
+ struct subsys_interface *sif)
+{
+ xtal = s3c_cpufreq_clk_get(NULL, "xtal");
+ hclk = s3c_cpufreq_clk_get(NULL, "hclk");
+ fclk = s3c_cpufreq_clk_get(NULL, "fclk");
+ armclk = s3c_cpufreq_clk_get(NULL, "armclk");
+
+ if (IS_ERR(xtal) || IS_ERR(hclk) || IS_ERR(fclk) || IS_ERR(armclk)) {
+ printk(KERN_ERR "%s: failed to get clocks\n", __func__);
+ return -ENOENT;
+ }
+
+ return s3c_cpufreq_register(&s3c2440_cpufreq_info);
+}
+
+static struct subsys_interface s3c2440_cpufreq_interface = {
+ .name = "s3c2440_cpufreq",
+ .subsys = &s3c2440_subsys,
+ .add_dev = s3c2440_cpufreq_add,
+};
+
+static int s3c2440_cpufreq_init(void)
+{
+ return subsys_interface_register(&s3c2440_cpufreq_interface);
+}
+
+/* arch_initcall adds the clocks we need, so use subsys_initcall. */
+subsys_initcall(s3c2440_cpufreq_init);
+
+static struct subsys_interface s3c2442_cpufreq_interface = {
+ .name = "s3c2442_cpufreq",
+ .subsys = &s3c2442_subsys,
+ .add_dev = s3c2440_cpufreq_add,
+};
+
+static int s3c2442_cpufreq_init(void)
+{
+ return subsys_interface_register(&s3c2442_cpufreq_interface);
+}
+subsys_initcall(s3c2442_cpufreq_init);
#endif /* CONFIG_CPU_S3C2440 */
-#ifdef CONFIG_CPU_S3C2412
-
-extern int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state);
-
-#endif /* CONFIG_CPU_S3C2412 */
-
#endif /* __ASSEMBLY__ */
#include <asm/sizes.h>
--- /dev/null
+/*
+ * Copyright (c) 2006-2007 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ * Vincent Sanders <vince@arm.linux.org.uk>
+ *
+ * S3C2410 CPU PLL tables
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <plat/cpu.h>
+#include <plat/cpu-freq-core.h>
+
+static struct cpufreq_frequency_table pll_vals_12MHz[] = {
+ { .frequency = 34000000, .index = PLLVAL(82, 2, 3), },
+ { .frequency = 45000000, .index = PLLVAL(82, 1, 3), },
+ { .frequency = 51000000, .index = PLLVAL(161, 3, 3), },
+ { .frequency = 48000000, .index = PLLVAL(120, 2, 3), },
+ { .frequency = 56000000, .index = PLLVAL(142, 2, 3), },
+ { .frequency = 68000000, .index = PLLVAL(82, 2, 2), },
+ { .frequency = 79000000, .index = PLLVAL(71, 1, 2), },
+ { .frequency = 85000000, .index = PLLVAL(105, 2, 2), },
+ { .frequency = 90000000, .index = PLLVAL(112, 2, 2), },
+ { .frequency = 101000000, .index = PLLVAL(127, 2, 2), },
+ { .frequency = 113000000, .index = PLLVAL(105, 1, 2), },
+ { .frequency = 118000000, .index = PLLVAL(150, 2, 2), },
+ { .frequency = 124000000, .index = PLLVAL(116, 1, 2), },
+ { .frequency = 135000000, .index = PLLVAL(82, 2, 1), },
+ { .frequency = 147000000, .index = PLLVAL(90, 2, 1), },
+ { .frequency = 152000000, .index = PLLVAL(68, 1, 1), },
+ { .frequency = 158000000, .index = PLLVAL(71, 1, 1), },
+ { .frequency = 170000000, .index = PLLVAL(77, 1, 1), },
+ { .frequency = 180000000, .index = PLLVAL(82, 1, 1), },
+ { .frequency = 186000000, .index = PLLVAL(85, 1, 1), },
+ { .frequency = 192000000, .index = PLLVAL(88, 1, 1), },
+ { .frequency = 203000000, .index = PLLVAL(161, 3, 1), },
+
+ /* 2410A extras */
+
+ { .frequency = 210000000, .index = PLLVAL(132, 2, 1), },
+ { .frequency = 226000000, .index = PLLVAL(105, 1, 1), },
+ { .frequency = 266000000, .index = PLLVAL(125, 1, 1), },
+ { .frequency = 268000000, .index = PLLVAL(126, 1, 1), },
+ { .frequency = 270000000, .index = PLLVAL(127, 1, 1), },
+};
+
+static int s3c2410_plls_add(struct device *dev, struct subsys_interface *sif)
+{
+ return s3c_plltab_register(pll_vals_12MHz, ARRAY_SIZE(pll_vals_12MHz));
+}
+
+static struct subsys_interface s3c2410_plls_interface = {
+ .name = "s3c2410_plls",
+ .subsys = &s3c2410_subsys,
+ .add_dev = s3c2410_plls_add,
+};
+
+static int __init s3c2410_pll_init(void)
+{
+ return subsys_interface_register(&s3c2410_plls_interface);
+
+}
+arch_initcall(s3c2410_pll_init);
+
+static struct subsys_interface s3c2410a_plls_interface = {
+ .name = "s3c2410a_plls",
+ .subsys = &s3c2410a_subsys,
+ .add_dev = s3c2410_plls_add,
+};
+
+static int __init s3c2410a_pll_init(void)
+{
+ return subsys_interface_register(&s3c2410a_plls_interface);
+}
+arch_initcall(s3c2410a_pll_init);
--- /dev/null
+/*
+ * Copyright (c) 2006-2007 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ * Vincent Sanders <vince@arm.linux.org.uk>
+ *
+ * S3C2440/S3C2442 CPU PLL tables (12MHz Crystal)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <plat/cpu.h>
+#include <plat/cpu-freq-core.h>
+
+static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = {
+ { .frequency = 75000000, .index = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */
+ { .frequency = 80000000, .index = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */
+ { .frequency = 90000000, .index = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */
+ { .frequency = 100000000, .index = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */
+ { .frequency = 110000000, .index = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */
+ { .frequency = 120000000, .index = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */
+ { .frequency = 150000000, .index = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */
+ { .frequency = 160000000, .index = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */
+ { .frequency = 170000000, .index = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */
+ { .frequency = 180000000, .index = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */
+ { .frequency = 190000000, .index = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */
+ { .frequency = 200000000, .index = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */
+ { .frequency = 210000000, .index = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */
+ { .frequency = 220000000, .index = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */
+ { .frequency = 230000000, .index = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */
+ { .frequency = 240000000, .index = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */
+ { .frequency = 300000000, .index = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */
+ { .frequency = 310000000, .index = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */
+ { .frequency = 320000000, .index = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */
+ { .frequency = 330000000, .index = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */
+ { .frequency = 340000000, .index = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */
+ { .frequency = 350000000, .index = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */
+ { .frequency = 360000000, .index = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */
+ { .frequency = 370000000, .index = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */
+ { .frequency = 380000000, .index = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */
+ { .frequency = 390000000, .index = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */
+ { .frequency = 400000000, .index = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */
+};
+
+static int s3c2440_plls12_add(struct device *dev, struct subsys_interface *sif)
+{
+ struct clk *xtal_clk;
+ unsigned long xtal;
+
+ xtal_clk = clk_get(NULL, "xtal");
+ if (IS_ERR(xtal_clk))
+ return PTR_ERR(xtal_clk);
+
+ xtal = clk_get_rate(xtal_clk);
+ clk_put(xtal_clk);
+
+ if (xtal == 12000000) {
+ printk(KERN_INFO "Using PLL table for 12MHz crystal\n");
+ return s3c_plltab_register(s3c2440_plls_12,
+ ARRAY_SIZE(s3c2440_plls_12));
+ }
+
+ return 0;
+}
+
+static struct subsys_interface s3c2440_plls12_interface = {
+ .name = "s3c2440_plls12",
+ .subsys = &s3c2440_subsys,
+ .add_dev = s3c2440_plls12_add,
+};
+
+static int __init s3c2440_pll_12mhz(void)
+{
+ return subsys_interface_register(&s3c2440_plls12_interface);
+
+}
+arch_initcall(s3c2440_pll_12mhz);
+
+static struct subsys_interface s3c2442_plls12_interface = {
+ .name = "s3c2442_plls12",
+ .subsys = &s3c2442_subsys,
+ .add_dev = s3c2440_plls12_add,
+};
+
+static int __init s3c2442_pll_12mhz(void)
+{
+ return subsys_interface_register(&s3c2442_plls12_interface);
+
+}
+arch_initcall(s3c2442_pll_12mhz);
--- /dev/null
+/*
+ * Copyright (c) 2006-2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ * Vincent Sanders <vince@arm.linux.org.uk>
+ *
+ * S3C2440/S3C2442 CPU PLL tables (16.93444MHz Crystal)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <plat/cpu.h>
+#include <plat/cpu-freq-core.h>
+
+static struct cpufreq_frequency_table s3c2440_plls_169344[] __initdata = {
+ { .frequency = 78019200, .index = PLLVAL(121, 5, 3), }, /* FVco 624.153600 */
+ { .frequency = 84067200, .index = PLLVAL(131, 5, 3), }, /* FVco 672.537600 */
+ { .frequency = 90115200, .index = PLLVAL(141, 5, 3), }, /* FVco 720.921600 */
+ { .frequency = 96163200, .index = PLLVAL(151, 5, 3), }, /* FVco 769.305600 */
+ { .frequency = 102135600, .index = PLLVAL(185, 6, 3), }, /* FVco 817.084800 */
+ { .frequency = 108259200, .index = PLLVAL(171, 5, 3), }, /* FVco 866.073600 */
+ { .frequency = 114307200, .index = PLLVAL(127, 3, 3), }, /* FVco 914.457600 */
+ { .frequency = 120234240, .index = PLLVAL(134, 3, 3), }, /* FVco 961.873920 */
+ { .frequency = 126161280, .index = PLLVAL(141, 3, 3), }, /* FVco 1009.290240 */
+ { .frequency = 132088320, .index = PLLVAL(148, 3, 3), }, /* FVco 1056.706560 */
+ { .frequency = 138015360, .index = PLLVAL(155, 3, 3), }, /* FVco 1104.122880 */
+ { .frequency = 144789120, .index = PLLVAL(163, 3, 3), }, /* FVco 1158.312960 */
+ { .frequency = 150100363, .index = PLLVAL(187, 9, 2), }, /* FVco 600.401454 */
+ { .frequency = 156038400, .index = PLLVAL(121, 5, 2), }, /* FVco 624.153600 */
+ { .frequency = 162086400, .index = PLLVAL(126, 5, 2), }, /* FVco 648.345600 */
+ { .frequency = 168134400, .index = PLLVAL(131, 5, 2), }, /* FVco 672.537600 */
+ { .frequency = 174048000, .index = PLLVAL(177, 7, 2), }, /* FVco 696.192000 */
+ { .frequency = 180230400, .index = PLLVAL(141, 5, 2), }, /* FVco 720.921600 */
+ { .frequency = 186278400, .index = PLLVAL(124, 4, 2), }, /* FVco 745.113600 */
+ { .frequency = 192326400, .index = PLLVAL(151, 5, 2), }, /* FVco 769.305600 */
+ { .frequency = 198132480, .index = PLLVAL(109, 3, 2), }, /* FVco 792.529920 */
+ { .frequency = 204271200, .index = PLLVAL(185, 6, 2), }, /* FVco 817.084800 */
+ { .frequency = 210268800, .index = PLLVAL(141, 4, 2), }, /* FVco 841.075200 */
+ { .frequency = 216518400, .index = PLLVAL(171, 5, 2), }, /* FVco 866.073600 */
+ { .frequency = 222264000, .index = PLLVAL(97, 2, 2), }, /* FVco 889.056000 */
+ { .frequency = 228614400, .index = PLLVAL(127, 3, 2), }, /* FVco 914.457600 */
+ { .frequency = 234259200, .index = PLLVAL(158, 4, 2), }, /* FVco 937.036800 */
+ { .frequency = 240468480, .index = PLLVAL(134, 3, 2), }, /* FVco 961.873920 */
+ { .frequency = 246960000, .index = PLLVAL(167, 4, 2), }, /* FVco 987.840000 */
+ { .frequency = 252322560, .index = PLLVAL(141, 3, 2), }, /* FVco 1009.290240 */
+ { .frequency = 258249600, .index = PLLVAL(114, 2, 2), }, /* FVco 1032.998400 */
+ { .frequency = 264176640, .index = PLLVAL(148, 3, 2), }, /* FVco 1056.706560 */
+ { .frequency = 270950400, .index = PLLVAL(120, 2, 2), }, /* FVco 1083.801600 */
+ { .frequency = 276030720, .index = PLLVAL(155, 3, 2), }, /* FVco 1104.122880 */
+ { .frequency = 282240000, .index = PLLVAL(92, 1, 2), }, /* FVco 1128.960000 */
+ { .frequency = 289578240, .index = PLLVAL(163, 3, 2), }, /* FVco 1158.312960 */
+ { .frequency = 294235200, .index = PLLVAL(131, 2, 2), }, /* FVco 1176.940800 */
+ { .frequency = 300200727, .index = PLLVAL(187, 9, 1), }, /* FVco 600.401454 */
+ { .frequency = 306358690, .index = PLLVAL(191, 9, 1), }, /* FVco 612.717380 */
+ { .frequency = 312076800, .index = PLLVAL(121, 5, 1), }, /* FVco 624.153600 */
+ { .frequency = 318366720, .index = PLLVAL(86, 3, 1), }, /* FVco 636.733440 */
+ { .frequency = 324172800, .index = PLLVAL(126, 5, 1), }, /* FVco 648.345600 */
+ { .frequency = 330220800, .index = PLLVAL(109, 4, 1), }, /* FVco 660.441600 */
+ { .frequency = 336268800, .index = PLLVAL(131, 5, 1), }, /* FVco 672.537600 */
+ { .frequency = 342074880, .index = PLLVAL(93, 3, 1), }, /* FVco 684.149760 */
+ { .frequency = 348096000, .index = PLLVAL(177, 7, 1), }, /* FVco 696.192000 */
+ { .frequency = 355622400, .index = PLLVAL(118, 4, 1), }, /* FVco 711.244800 */
+ { .frequency = 360460800, .index = PLLVAL(141, 5, 1), }, /* FVco 720.921600 */
+ { .frequency = 366206400, .index = PLLVAL(165, 6, 1), }, /* FVco 732.412800 */
+ { .frequency = 372556800, .index = PLLVAL(124, 4, 1), }, /* FVco 745.113600 */
+ { .frequency = 378201600, .index = PLLVAL(126, 4, 1), }, /* FVco 756.403200 */
+ { .frequency = 384652800, .index = PLLVAL(151, 5, 1), }, /* FVco 769.305600 */
+ { .frequency = 391608000, .index = PLLVAL(177, 6, 1), }, /* FVco 783.216000 */
+ { .frequency = 396264960, .index = PLLVAL(109, 3, 1), }, /* FVco 792.529920 */
+ { .frequency = 402192000, .index = PLLVAL(87, 2, 1), }, /* FVco 804.384000 */
+};
+
+static int s3c2440_plls169344_add(struct device *dev,
+ struct subsys_interface *sif)
+{
+ struct clk *xtal_clk;
+ unsigned long xtal;
+
+ xtal_clk = clk_get(NULL, "xtal");
+ if (IS_ERR(xtal_clk))
+ return PTR_ERR(xtal_clk);
+
+ xtal = clk_get_rate(xtal_clk);
+ clk_put(xtal_clk);
+
+ if (xtal == 169344000) {
+ printk(KERN_INFO "Using PLL table for 16.9344MHz crystal\n");
+ return s3c_plltab_register(s3c2440_plls_169344,
+ ARRAY_SIZE(s3c2440_plls_169344));
+ }
+
+ return 0;
+}
+
+static struct subsys_interface s3c2440_plls169344_interface = {
+ .name = "s3c2440_plls169344",
+ .subsys = &s3c2440_subsys,
+ .add_dev = s3c2440_plls169344_add,
+};
+
+static int __init s3c2440_pll_16934400(void)
+{
+ return subsys_interface_register(&s3c2440_plls169344_interface);
+}
+arch_initcall(s3c2440_pll_16934400);
+
+static struct subsys_interface s3c2442_plls169344_interface = {
+ .name = "s3c2442_plls169344",
+ .subsys = &s3c2442_subsys,
+ .add_dev = s3c2440_plls169344_add,
+};
+
+static int __init s3c2442_pll_16934400(void)
+{
+ return subsys_interface_register(&s3c2442_plls169344_interface);
+}
+arch_initcall(s3c2442_pll_16934400);
projects / firefly-linux-kernel-4.4.55.git / commitdiff