2 * Copyright (c) 2005-2008 Simtec Electronics
3 * http://armlinux.simtec.co.uk/
4 * Ben Dooks <ben@simtec.co.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/interrupt.h>
14 #include <linux/list.h>
15 #include <linux/timer.h>
16 #include <linux/init.h>
17 #include <linux/gpio.h>
18 #include <linux/device.h>
19 #include <linux/syscore_ops.h>
20 #include <linux/serial_core.h>
21 #include <linux/clk.h>
22 #include <linux/i2c.h>
25 #include <linux/i2c/tps65010.h>
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/irq.h>
33 #include <linux/platform_data/mtd-nand-s3c2410.h>
34 #include <linux/platform_data/i2c-s3c2410.h>
36 #include <linux/mtd/mtd.h>
37 #include <linux/mtd/nand.h>
38 #include <linux/mtd/nand_ecc.h>
39 #include <linux/mtd/partitions.h>
41 #include <plat/clock.h>
43 #include <plat/cpu-freq.h>
44 #include <plat/devs.h>
45 #include <plat/gpio-cfg.h>
46 #include <plat/regs-serial.h>
48 #include <mach/hardware.h>
49 #include <mach/regs-gpio.h>
50 #include <mach/regs-mem.h>
51 #include <mach/regs-lcd.h>
56 /* onboard perihperal map */
58 static struct map_desc osiris_iodesc[] __initdata = {
59 /* ISA IO areas (may be over-written later) */
62 .virtual = (u32)S3C24XX_VA_ISA_BYTE,
63 .pfn = __phys_to_pfn(S3C2410_CS5),
67 .virtual = (u32)S3C24XX_VA_ISA_WORD,
68 .pfn = __phys_to_pfn(S3C2410_CS5),
73 /* CPLD control registers */
76 .virtual = (u32)OSIRIS_VA_CTRL0,
77 .pfn = __phys_to_pfn(OSIRIS_PA_CTRL0),
81 .virtual = (u32)OSIRIS_VA_CTRL1,
82 .pfn = __phys_to_pfn(OSIRIS_PA_CTRL1),
86 .virtual = (u32)OSIRIS_VA_CTRL2,
87 .pfn = __phys_to_pfn(OSIRIS_PA_CTRL2),
91 .virtual = (u32)OSIRIS_VA_IDREG,
92 .pfn = __phys_to_pfn(OSIRIS_PA_IDREG),
98 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
99 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
100 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
102 static struct s3c2410_uartcfg osiris_uartcfgs[] __initdata = {
109 .clk_sel = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
117 .clk_sel = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
125 .clk_sel = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
129 /* NAND Flash on Osiris board */
131 static int external_map[] = { 2 };
132 static int chip0_map[] = { 0 };
133 static int chip1_map[] = { 1 };
135 static struct mtd_partition __initdata osiris_default_nand_part[] = {
137 .name = "Boot Agent",
143 .size = SZ_4M - SZ_16K,
149 .size = SZ_32M - SZ_4M,
154 .size = MTDPART_SIZ_FULL,
158 static struct mtd_partition __initdata osiris_default_nand_part_large[] = {
160 .name = "Boot Agent",
166 .size = SZ_4M - SZ_128K,
172 .size = SZ_32M - SZ_4M,
177 .size = MTDPART_SIZ_FULL,
181 /* the Osiris has 3 selectable slots for nand-flash, the two
182 * on-board chip areas, as well as the external slot.
184 * Note, there is no current hot-plug support for the External
188 static struct s3c2410_nand_set __initdata osiris_nand_sets[] = {
192 .nr_map = external_map,
193 .options = NAND_SCAN_SILENT_NODEV,
194 .nr_partitions = ARRAY_SIZE(osiris_default_nand_part),
195 .partitions = osiris_default_nand_part,
201 .nr_partitions = ARRAY_SIZE(osiris_default_nand_part),
202 .partitions = osiris_default_nand_part,
208 .options = NAND_SCAN_SILENT_NODEV,
209 .nr_partitions = ARRAY_SIZE(osiris_default_nand_part),
210 .partitions = osiris_default_nand_part,
214 static void osiris_nand_select(struct s3c2410_nand_set *set, int slot)
218 slot = set->nr_map[slot] & 3;
220 pr_debug("osiris_nand: selecting slot %d (set %p,%p)\n",
221 slot, set, set->nr_map);
223 tmp = __raw_readb(OSIRIS_VA_CTRL0);
224 tmp &= ~OSIRIS_CTRL0_NANDSEL;
227 pr_debug("osiris_nand: ctrl0 now %02x\n", tmp);
229 __raw_writeb(tmp, OSIRIS_VA_CTRL0);
232 static struct s3c2410_platform_nand __initdata osiris_nand_info = {
236 .nr_sets = ARRAY_SIZE(osiris_nand_sets),
237 .sets = osiris_nand_sets,
238 .select_chip = osiris_nand_select,
241 /* PCMCIA control and configuration */
243 static struct resource osiris_pcmcia_resource[] = {
244 [0] = DEFINE_RES_MEM(0x0f000000, SZ_1M),
245 [1] = DEFINE_RES_MEM(0x0c000000, SZ_1M),
248 static struct platform_device osiris_pcmcia = {
249 .name = "osiris-pcmcia",
251 .num_resources = ARRAY_SIZE(osiris_pcmcia_resource),
252 .resource = osiris_pcmcia_resource,
255 /* Osiris power management device */
258 static unsigned char pm_osiris_ctrl0;
260 static int osiris_pm_suspend(void)
264 pm_osiris_ctrl0 = __raw_readb(OSIRIS_VA_CTRL0);
265 tmp = pm_osiris_ctrl0 & ~OSIRIS_CTRL0_NANDSEL;
267 /* ensure correct NAND slot is selected on resume */
268 if ((pm_osiris_ctrl0 & OSIRIS_CTRL0_BOOT_INT) == 0)
271 __raw_writeb(tmp, OSIRIS_VA_CTRL0);
273 /* ensure that an nRESET is not generated on resume. */
274 gpio_request_one(S3C2410_GPA(21), GPIOF_OUT_INIT_HIGH, NULL);
275 gpio_free(S3C2410_GPA(21));
280 static void osiris_pm_resume(void)
282 if (pm_osiris_ctrl0 & OSIRIS_CTRL0_FIX8)
283 __raw_writeb(OSIRIS_CTRL1_FIX8, OSIRIS_VA_CTRL1);
285 __raw_writeb(pm_osiris_ctrl0, OSIRIS_VA_CTRL0);
287 s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPA21_nRSTOUT);
291 #define osiris_pm_suspend NULL
292 #define osiris_pm_resume NULL
295 static struct syscore_ops osiris_pm_syscore_ops = {
296 .suspend = osiris_pm_suspend,
297 .resume = osiris_pm_resume,
300 /* Link for DVS driver to TPS65011 */
302 static void osiris_tps_release(struct device *dev)
304 /* static device, do not need to release anything */
307 static struct platform_device osiris_tps_device = {
308 .name = "osiris-dvs",
310 .dev.release = osiris_tps_release,
313 static int osiris_tps_setup(struct i2c_client *client, void *context)
315 osiris_tps_device.dev.parent = &client->dev;
316 return platform_device_register(&osiris_tps_device);
319 static int osiris_tps_remove(struct i2c_client *client, void *context)
321 platform_device_unregister(&osiris_tps_device);
325 static struct tps65010_board osiris_tps_board = {
326 .base = -1, /* GPIO can go anywhere at the moment */
327 .setup = osiris_tps_setup,
328 .teardown = osiris_tps_remove,
331 /* I2C devices fitted. */
333 static struct i2c_board_info osiris_i2c_devs[] __initdata = {
335 I2C_BOARD_INFO("tps65011", 0x48),
337 .platform_data = &osiris_tps_board,
341 /* Standard Osiris devices */
343 static struct platform_device *osiris_devices[] __initdata = {
350 static struct clk *osiris_clocks[] __initdata = {
358 static struct s3c_cpufreq_board __initdata osiris_cpufreq = {
359 .refresh = 7800, /* refresh period is 7.8usec */
364 static void __init osiris_map_io(void)
368 /* initialise the clocks */
370 s3c24xx_dclk0.parent = &clk_upll;
371 s3c24xx_dclk0.rate = 12*1000*1000;
373 s3c24xx_dclk1.parent = &clk_upll;
374 s3c24xx_dclk1.rate = 24*1000*1000;
376 s3c24xx_clkout0.parent = &s3c24xx_dclk0;
377 s3c24xx_clkout1.parent = &s3c24xx_dclk1;
379 s3c24xx_uclk.parent = &s3c24xx_clkout1;
381 s3c24xx_register_clocks(osiris_clocks, ARRAY_SIZE(osiris_clocks));
383 s3c24xx_init_io(osiris_iodesc, ARRAY_SIZE(osiris_iodesc));
384 s3c24xx_init_clocks(0);
385 s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));
387 /* check for the newer revision boards with large page nand */
389 if ((__raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK) >= 4) {
390 printk(KERN_INFO "OSIRIS-B detected (revision %d)\n",
391 __raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK);
392 osiris_nand_sets[0].partitions = osiris_default_nand_part_large;
393 osiris_nand_sets[0].nr_partitions = ARRAY_SIZE(osiris_default_nand_part_large);
395 /* write-protect line to the NAND */
396 gpio_request_one(S3C2410_GPA(0), GPIOF_OUT_INIT_HIGH, NULL);
397 gpio_free(S3C2410_GPA(0));
400 /* fix bus configuration (nBE settings wrong on ABLE pre v2.20) */
402 local_irq_save(flags);
403 __raw_writel(__raw_readl(S3C2410_BWSCON) | S3C2410_BWSCON_ST1 | S3C2410_BWSCON_ST2 | S3C2410_BWSCON_ST3 | S3C2410_BWSCON_ST4 | S3C2410_BWSCON_ST5, S3C2410_BWSCON);
404 local_irq_restore(flags);
407 static void __init osiris_init(void)
409 register_syscore_ops(&osiris_pm_syscore_ops);
411 s3c_i2c0_set_platdata(NULL);
412 s3c_nand_set_platdata(&osiris_nand_info);
414 s3c_cpufreq_setboard(&osiris_cpufreq);
416 i2c_register_board_info(0, osiris_i2c_devs,
417 ARRAY_SIZE(osiris_i2c_devs));
419 platform_add_devices(osiris_devices, ARRAY_SIZE(osiris_devices));
422 MACHINE_START(OSIRIS, "Simtec-OSIRIS")
423 /* Maintainer: Ben Dooks <ben@simtec.co.uk> */
424 .atag_offset = 0x100,
425 .map_io = osiris_map_io,
426 .init_irq = s3c24xx_init_irq,
427 .init_machine = osiris_init,
428 .init_time = s3c24xx_timer_init,
429 .restart = s3c244x_restart,