* Author: Linus Walleij <linus.walleij@stericsson.com>
*/
#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-#include <linux/bitops.h>
-#include <linux/device.h>
-#include <linux/mm.h>
-#include <linux/termios.h>
-#include <linux/dmaengine.h>
-#include <linux/amba/bus.h>
-#include <linux/amba/mmci.h>
-#include <linux/amba/serial.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/fsmc.h>
#include <linux/pinctrl/machine.h>
#include <linux/pinctrl/pinconf-generic.h>
-#include <linux/dma-mapping.h>
#include <linux/platform_data/clk-u300.h>
#include <linux/platform_data/pinctrl-coh901.h>
-#include <linux/platform_data/dma-coh901318.h>
-#include <linux/irqchip/arm-vic.h>
+#include <linux/irqchip.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/clocksource.h>
+#include <linux/clk.h>
-#include <asm/types.h>
-#include <asm/setup.h>
-#include <asm/memory.h>
#include <asm/mach/map.h>
-#include <asm/mach-types.h>
#include <asm/mach/arch.h>
-#include <mach/hardware.h>
-#include <mach/syscon.h>
-#include <mach/irqs.h>
+/*
+ * These are the large blocks of memory allocated for I/O.
+ * the defines are used for setting up the I/O memory mapping.
+ */
+
+/* NAND Flash CS0 */
+#define U300_NAND_CS0_PHYS_BASE 0x80000000
+/* NFIF */
+#define U300_NAND_IF_PHYS_BASE 0x9f800000
+/* ALE, CLE offset for FSMC NAND */
+#define PLAT_NAND_CLE (1 << 16)
+#define PLAT_NAND_ALE (1 << 17)
+/* AHB Peripherals */
+#define U300_AHB_PER_PHYS_BASE 0xa0000000
+#define U300_AHB_PER_VIRT_BASE 0xff010000
+/* FAST Peripherals */
+#define U300_FAST_PER_PHYS_BASE 0xc0000000
+#define U300_FAST_PER_VIRT_BASE 0xff020000
+/* SLOW Peripherals */
+#define U300_SLOW_PER_PHYS_BASE 0xc0010000
+#define U300_SLOW_PER_VIRT_BASE 0xff000000
+/* Boot ROM */
+#define U300_BOOTROM_PHYS_BASE 0xffff0000
+#define U300_BOOTROM_VIRT_BASE 0xffff0000
+/* SEMI config base */
+#define U300_SEMI_CONFIG_BASE 0x2FFE0000
+
+/*
+ * AHB peripherals
+ */
+
+/* AHB Peripherals Bridge Controller */
+#define U300_AHB_BRIDGE_BASE (U300_AHB_PER_PHYS_BASE+0x0000)
+/* Vectored Interrupt Controller 0, servicing 32 interrupts */
+#define U300_INTCON0_BASE (U300_AHB_PER_PHYS_BASE+0x1000)
+#define U300_INTCON0_VBASE IOMEM(U300_AHB_PER_VIRT_BASE+0x1000)
+/* Vectored Interrupt Controller 1, servicing 32 interrupts */
+#define U300_INTCON1_BASE (U300_AHB_PER_PHYS_BASE+0x2000)
+#define U300_INTCON1_VBASE IOMEM(U300_AHB_PER_VIRT_BASE+0x2000)
+/* Memory Stick Pro (MSPRO) controller */
+#define U300_MSPRO_BASE (U300_AHB_PER_PHYS_BASE+0x3000)
+/* EMIF Configuration Area */
+#define U300_EMIF_CFG_BASE (U300_AHB_PER_PHYS_BASE+0x4000)
+
+/*
+ * FAST peripherals
+ */
+
+/* FAST bridge control */
+#define U300_FAST_BRIDGE_BASE (U300_FAST_PER_PHYS_BASE+0x0000)
+/* MMC/SD controller */
+#define U300_MMCSD_BASE (U300_FAST_PER_PHYS_BASE+0x1000)
+/* PCM I2S0 controller */
+#define U300_PCM_I2S0_BASE (U300_FAST_PER_PHYS_BASE+0x2000)
+/* PCM I2S1 controller */
+#define U300_PCM_I2S1_BASE (U300_FAST_PER_PHYS_BASE+0x3000)
+/* I2C0 controller */
+#define U300_I2C0_BASE (U300_FAST_PER_PHYS_BASE+0x4000)
+/* I2C1 controller */
+#define U300_I2C1_BASE (U300_FAST_PER_PHYS_BASE+0x5000)
+/* SPI controller */
+#define U300_SPI_BASE (U300_FAST_PER_PHYS_BASE+0x6000)
+/* Fast UART1 on U335 only */
+#define U300_UART1_BASE (U300_FAST_PER_PHYS_BASE+0x7000)
+
+/*
+ * SLOW peripherals
+ */
-#include "timer.h"
-#include "spi.h"
-#include "i2c.h"
-#include "u300-gpio.h"
+/* SLOW bridge control */
+#define U300_SLOW_BRIDGE_BASE (U300_SLOW_PER_PHYS_BASE)
+/* SYSCON */
+#define U300_SYSCON_BASE (U300_SLOW_PER_PHYS_BASE+0x1000)
+#define U300_SYSCON_VBASE IOMEM(U300_SLOW_PER_VIRT_BASE+0x1000)
+/* Watchdog */
+#define U300_WDOG_BASE (U300_SLOW_PER_PHYS_BASE+0x2000)
+/* UART0 */
+#define U300_UART0_BASE (U300_SLOW_PER_PHYS_BASE+0x3000)
+/* APP side special timer */
+#define U300_TIMER_APP_BASE (U300_SLOW_PER_PHYS_BASE+0x4000)
+#define U300_TIMER_APP_VBASE IOMEM(U300_SLOW_PER_VIRT_BASE+0x4000)
+/* Keypad */
+#define U300_KEYPAD_BASE (U300_SLOW_PER_PHYS_BASE+0x5000)
+/* GPIO */
+#define U300_GPIO_BASE (U300_SLOW_PER_PHYS_BASE+0x6000)
+/* RTC */
+#define U300_RTC_BASE (U300_SLOW_PER_PHYS_BASE+0x7000)
+/* Bus tracer */
+#define U300_BUSTR_BASE (U300_SLOW_PER_PHYS_BASE+0x8000)
+/* Event handler (hardware queue) */
+#define U300_EVHIST_BASE (U300_SLOW_PER_PHYS_BASE+0x9000)
+/* Genric Timer */
+#define U300_TIMER_BASE (U300_SLOW_PER_PHYS_BASE+0xa000)
+/* PPM */
+#define U300_PPM_BASE (U300_SLOW_PER_PHYS_BASE+0xb000)
+
+/*
+ * REST peripherals
+ */
+
+/* ISP (image signal processor) */
+#define U300_ISP_BASE (0xA0008000)
+/* DMA Controller base */
+#define U300_DMAC_BASE (0xC0020000)
+/* MSL Base */
+#define U300_MSL_BASE (0xc0022000)
+/* APEX Base */
+#define U300_APEX_BASE (0xc0030000)
+/* Video Encoder Base */
+#define U300_VIDEOENC_BASE (0xc0080000)
+/* XGAM Base */
+#define U300_XGAM_BASE (0xd0000000)
+
+/*
+ * SYSCON addresses applicable to the core machine.
+ */
+
+/* Chip ID register 16bit (R/-) */
+#define U300_SYSCON_CIDR (0x400)
+/* SMCR */
+#define U300_SYSCON_SMCR (0x4d0)
+#define U300_SYSCON_SMCR_FIELD_MASK (0x000e)
+#define U300_SYSCON_SMCR_SEMI_SREFACK_IND (0x0008)
+#define U300_SYSCON_SMCR_SEMI_SREFREQ_ENABLE (0x0004)
+#define U300_SYSCON_SMCR_SEMI_EXT_BOOT_MODE_ENABLE (0x0002)
+/* CPU_SW_DBGEN Software Debug Enable 16bit (R/W) */
+#define U300_SYSCON_CSDR (0x4f0)
+#define U300_SYSCON_CSDR_SW_DEBUG_ENABLE (0x0001)
+/* PRINT_CONTROL Print Control 16bit (R/-) */
+#define U300_SYSCON_PCR (0x4f8)
+#define U300_SYSCON_PCR_SERV_IND (0x0001)
+/* BOOT_CONTROL 16bit (R/-) */
+#define U300_SYSCON_BCR (0x4fc)
+#define U300_SYSCON_BCR_ACC_CPU_SUBSYS_VINITHI_IND (0x0400)
+#define U300_SYSCON_BCR_APP_CPU_SUBSYS_VINITHI_IND (0x0200)
+#define U300_SYSCON_BCR_EXTRA_BOOT_OPTION_MASK (0x01FC)
+#define U300_SYSCON_BCR_APP_BOOT_SERV_MASK (0x0003)
+
+static void __iomem *syscon_base;
/*
* Static I/O mappings that are needed for booting the U300 platforms. The
iotable_init(u300_io_desc, ARRAY_SIZE(u300_io_desc));
}
-/*
- * Declaration of devices found on the U300 board and
- * their respective memory locations.
- */
-
-static struct amba_pl011_data uart0_plat_data = {
-#ifdef CONFIG_COH901318
- .dma_filter = coh901318_filter_id,
- .dma_rx_param = (void *) U300_DMA_UART0_RX,
- .dma_tx_param = (void *) U300_DMA_UART0_TX,
-#endif
-};
-
-/* Slow device at 0x3000 offset */
-static AMBA_APB_DEVICE(uart0, "uart0", 0, U300_UART0_BASE,
- { IRQ_U300_UART0 }, &uart0_plat_data);
-
-/* The U335 have an additional UART1 on the APP CPU */
-static struct amba_pl011_data uart1_plat_data = {
-#ifdef CONFIG_COH901318
- .dma_filter = coh901318_filter_id,
- .dma_rx_param = (void *) U300_DMA_UART1_RX,
- .dma_tx_param = (void *) U300_DMA_UART1_TX,
-#endif
-};
-
-/* Fast device at 0x7000 offset */
-static AMBA_APB_DEVICE(uart1, "uart1", 0, U300_UART1_BASE,
- { IRQ_U300_UART1 }, &uart1_plat_data);
-
-/* AHB device at 0x4000 offset */
-static AMBA_APB_DEVICE(pl172, "pl172", 0, U300_EMIF_CFG_BASE, { }, NULL);
-
-/* Fast device at 0x6000 offset */
-static AMBA_APB_DEVICE(pl022, "pl022", 0, U300_SPI_BASE,
- { IRQ_U300_SPI }, NULL);
-
-/* Fast device at 0x1000 offset */
-#define U300_MMCSD_IRQS { IRQ_U300_MMCSD_MCIINTR0, IRQ_U300_MMCSD_MCIINTR1 }
-
-static struct mmci_platform_data mmcsd_platform_data = {
- /*
- * Do not set ocr_mask or voltage translation function,
- * we have a regulator we can control instead.
- */
- .f_max = 24000000,
- .gpio_wp = -1,
- .gpio_cd = U300_GPIO_PIN_MMC_CD,
- .cd_invert = true,
- .capabilities = MMC_CAP_MMC_HIGHSPEED |
- MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
-#ifdef CONFIG_COH901318
- .dma_filter = coh901318_filter_id,
- .dma_rx_param = (void *) U300_DMA_MMCSD_RX_TX,
- /* Don't specify a TX channel, this RX channel is bidirectional */
-#endif
-};
-
-static AMBA_APB_DEVICE(mmcsd, "mmci", 0, U300_MMCSD_BASE,
- U300_MMCSD_IRQS, &mmcsd_platform_data);
-
-/*
- * The order of device declaration may be important, since some devices
- * have dependencies on other devices being initialized first.
- */
-static struct amba_device *amba_devs[] __initdata = {
- &uart0_device,
- &uart1_device,
- &pl022_device,
- &pl172_device,
- &mmcsd_device,
-};
-
-/* Here follows a list of all hw resources that the platform devices
- * allocate. Note, clock dependencies are not included
- */
-
-static struct resource gpio_resources[] = {
- {
- .start = U300_GPIO_BASE,
- .end = (U300_GPIO_BASE + SZ_4K - 1),
- .flags = IORESOURCE_MEM,
- },
- {
- .name = "gpio0",
- .start = IRQ_U300_GPIO_PORT0,
- .end = IRQ_U300_GPIO_PORT0,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "gpio1",
- .start = IRQ_U300_GPIO_PORT1,
- .end = IRQ_U300_GPIO_PORT1,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "gpio2",
- .start = IRQ_U300_GPIO_PORT2,
- .end = IRQ_U300_GPIO_PORT2,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "gpio3",
- .start = IRQ_U300_GPIO_PORT3,
- .end = IRQ_U300_GPIO_PORT3,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "gpio4",
- .start = IRQ_U300_GPIO_PORT4,
- .end = IRQ_U300_GPIO_PORT4,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "gpio5",
- .start = IRQ_U300_GPIO_PORT5,
- .end = IRQ_U300_GPIO_PORT5,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "gpio6",
- .start = IRQ_U300_GPIO_PORT6,
- .end = IRQ_U300_GPIO_PORT6,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static struct resource keypad_resources[] = {
- {
- .start = U300_KEYPAD_BASE,
- .end = U300_KEYPAD_BASE + SZ_4K - 1,
- .flags = IORESOURCE_MEM,
- },
- {
- .name = "coh901461-press",
- .start = IRQ_U300_KEYPAD_KEYBF,
- .end = IRQ_U300_KEYPAD_KEYBF,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "coh901461-release",
- .start = IRQ_U300_KEYPAD_KEYBR,
- .end = IRQ_U300_KEYPAD_KEYBR,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static struct resource rtc_resources[] = {
- {
- .start = U300_RTC_BASE,
- .end = U300_RTC_BASE + SZ_4K - 1,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = IRQ_U300_RTC,
- .end = IRQ_U300_RTC,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-/*
- * Fsmc does have IRQs: #43 and #44 (NFIF and NFIF2)
- * but these are not yet used by the driver.
- */
-static struct resource fsmc_resources[] = {
- {
- .name = "nand_addr",
- .start = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_ALE,
- .end = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_ALE + SZ_16K - 1,
- .flags = IORESOURCE_MEM,
- },
- {
- .name = "nand_cmd",
- .start = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_CLE,
- .end = U300_NAND_CS0_PHYS_BASE + PLAT_NAND_CLE + SZ_16K - 1,
- .flags = IORESOURCE_MEM,
- },
- {
- .name = "nand_data",
- .start = U300_NAND_CS0_PHYS_BASE,
- .end = U300_NAND_CS0_PHYS_BASE + SZ_16K - 1,
- .flags = IORESOURCE_MEM,
- },
- {
- .name = "fsmc_regs",
- .start = U300_NAND_IF_PHYS_BASE,
- .end = U300_NAND_IF_PHYS_BASE + SZ_4K - 1,
- .flags = IORESOURCE_MEM,
- },
-};
-
-static struct resource i2c0_resources[] = {
- {
- .start = U300_I2C0_BASE,
- .end = U300_I2C0_BASE + SZ_4K - 1,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = IRQ_U300_I2C0,
- .end = IRQ_U300_I2C0,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static struct resource i2c1_resources[] = {
- {
- .start = U300_I2C1_BASE,
- .end = U300_I2C1_BASE + SZ_4K - 1,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = IRQ_U300_I2C1,
- .end = IRQ_U300_I2C1,
- .flags = IORESOURCE_IRQ,
- },
-
-};
-
-static struct resource wdog_resources[] = {
- {
- .start = U300_WDOG_BASE,
- .end = U300_WDOG_BASE + SZ_4K - 1,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = IRQ_U300_WDOG,
- .end = IRQ_U300_WDOG,
- .flags = IORESOURCE_IRQ,
- }
-};
-
-static struct resource dma_resource[] = {
- {
- .start = U300_DMAC_BASE,
- .end = U300_DMAC_BASE + PAGE_SIZE - 1,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = IRQ_U300_DMA,
- .end = IRQ_U300_DMA,
- .flags = IORESOURCE_IRQ,
- }
-};
-
-
-static struct resource pinctrl_resources[] = {
- {
- .start = U300_SYSCON_BASE,
- .end = U300_SYSCON_BASE + SZ_4K - 1,
- .flags = IORESOURCE_MEM,
- },
-};
-
-static struct platform_device wdog_device = {
- .name = "coh901327_wdog",
- .id = -1,
- .num_resources = ARRAY_SIZE(wdog_resources),
- .resource = wdog_resources,
-};
-
-static struct platform_device i2c0_device = {
- .name = "stu300",
- .id = 0,
- .num_resources = ARRAY_SIZE(i2c0_resources),
- .resource = i2c0_resources,
-};
-
-static struct platform_device i2c1_device = {
- .name = "stu300",
- .id = 1,
- .num_resources = ARRAY_SIZE(i2c1_resources),
- .resource = i2c1_resources,
-};
-
-static struct platform_device pinctrl_device = {
- .name = "pinctrl-u300",
- .id = -1,
- .num_resources = ARRAY_SIZE(pinctrl_resources),
- .resource = pinctrl_resources,
-};
-
/*
* The different variants have a few different versions of the
* GPIO block, with different number of ports.
.gpio_base = 0,
};
-static struct platform_device gpio_device = {
- .name = "u300-gpio",
- .id = -1,
- .num_resources = ARRAY_SIZE(gpio_resources),
- .resource = gpio_resources,
- .dev = {
- .platform_data = &u300_gpio_plat,
- },
-};
-
-static struct platform_device keypad_device = {
- .name = "keypad",
- .id = -1,
- .num_resources = ARRAY_SIZE(keypad_resources),
- .resource = keypad_resources,
-};
-
-static struct platform_device rtc_device = {
- .name = "rtc-coh901331",
- .id = -1,
- .num_resources = ARRAY_SIZE(rtc_resources),
- .resource = rtc_resources,
-};
-
-static struct mtd_partition u300_partitions[] = {
- {
- .name = "bootrecords",
- .offset = 0,
- .size = SZ_128K,
- },
- {
- .name = "free",
- .offset = SZ_128K,
- .size = 8064 * SZ_1K,
- },
- {
- .name = "platform",
- .offset = 8192 * SZ_1K,
- .size = 253952 * SZ_1K,
- },
-};
-
-static struct fsmc_nand_platform_data nand_platform_data = {
- .partitions = u300_partitions,
- .nr_partitions = ARRAY_SIZE(u300_partitions),
- .options = NAND_SKIP_BBTSCAN,
- .width = FSMC_NAND_BW8,
-};
-
-static struct platform_device nand_device = {
- .name = "fsmc-nand",
- .id = -1,
- .resource = fsmc_resources,
- .num_resources = ARRAY_SIZE(fsmc_resources),
- .dev = {
- .platform_data = &nand_platform_data,
- },
-};
-
-static struct platform_device dma_device = {
- .name = "coh901318",
- .id = -1,
- .resource = dma_resource,
- .num_resources = ARRAY_SIZE(dma_resource),
- .dev = {
- .coherent_dma_mask = ~0,
- },
-};
-
static unsigned long pin_pullup_conf[] = {
PIN_CONF_PACKED(PIN_CONFIG_BIAS_PULL_UP, 1),
};
pin_highz_conf),
};
-/*
- * Notice that AMBA devices are initialized before platform devices.
- *
- */
-static struct platform_device *platform_devs[] __initdata = {
- &dma_device,
- &i2c0_device,
- &i2c1_device,
- &keypad_device,
- &rtc_device,
- &pinctrl_device,
- &gpio_device,
- &nand_device,
- &wdog_device,
-};
-
-/*
- * Interrupts: the U300 platforms have two pl190 ARM PrimeCells connected
- * together so some interrupts are connected to the first one and some
- * to the second one.
- */
-static void __init u300_init_irq(void)
-{
- u32 mask[2] = {0, 0};
- struct clk *clk;
- int i;
-
- /* initialize clocking early, we want to clock the INTCON */
- u300_clk_init(U300_SYSCON_VBASE);
-
- /* Bootstrap EMIF and SEMI clocks */
- clk = clk_get_sys("pl172", NULL);
- BUG_ON(IS_ERR(clk));
- clk_prepare_enable(clk);
- clk = clk_get_sys("semi", NULL);
- BUG_ON(IS_ERR(clk));
- clk_prepare_enable(clk);
-
- /* Clock the interrupt controller */
- clk = clk_get_sys("intcon", NULL);
- BUG_ON(IS_ERR(clk));
- clk_prepare_enable(clk);
-
- for (i = 0; i < U300_VIC_IRQS_END; i++)
- set_bit(i, (unsigned long *) &mask[0]);
- vic_init((void __iomem *) U300_INTCON0_VBASE, IRQ_U300_INTCON0_START,
- mask[0], mask[0]);
- vic_init((void __iomem *) U300_INTCON1_VBASE, IRQ_U300_INTCON1_START,
- mask[1], mask[1]);
-}
-
-
-/*
- * U300 platforms peripheral handling
- */
struct db_chip {
u16 chipid;
const char *name;
const char unknown[] = "UNKNOWN";
/* Read out and print chip ID */
- val = readw(U300_SYSCON_VBASE + U300_SYSCON_CIDR);
+ val = readw(syscon_base + U300_SYSCON_CIDR);
/* This is in funky bigendian order... */
val = (val & 0xFFU) << 8 | (val >> 8);
chip = db_chips;
}
}
-/*
- * Some devices and their resources require reserved physical memory from
- * the end of the available RAM. This function traverses the list of devices
- * and assigns actual addresses to these.
- */
-static void __init u300_assign_physmem(void)
-{
- unsigned long curr_start = __pa(high_memory);
- int i, j;
-
- for (i = 0; i < ARRAY_SIZE(platform_devs); i++) {
- for (j = 0; j < platform_devs[i]->num_resources; j++) {
- struct resource *const res =
- &platform_devs[i]->resource[j];
-
- if (IORESOURCE_MEM == res->flags &&
- 0 == res->start) {
- res->start = curr_start;
- res->end += curr_start;
- curr_start += resource_size(res);
-
- printk(KERN_INFO "core.c: Mapping RAM " \
- "%#x-%#x to device %s:%s\n",
- res->start, res->end,
- platform_devs[i]->name, res->name);
- }
- }
- }
-}
-
-static void __init u300_init_machine(void)
-{
- int i;
- u16 val;
-
- /* Check what platform we run and print some status information */
- u300_init_check_chip();
-
- /* Initialize SPI device with some board specifics */
- u300_spi_init(&pl022_device);
-
- /* Register the AMBA devices in the AMBA bus abstraction layer */
- for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
- struct amba_device *d = amba_devs[i];
- amba_device_register(d, &iomem_resource);
- }
-
- u300_assign_physmem();
-
- /* Initialize pinmuxing */
- pinctrl_register_mappings(u300_pinmux_map,
- ARRAY_SIZE(u300_pinmux_map));
-
- /* Register subdevices on the I2C buses */
- u300_i2c_register_board_devices();
-
- /* Register the platform devices */
- platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
-
- /* Register subdevices on the SPI bus */
- u300_spi_register_board_devices();
-
- /* Enable SEMI self refresh */
- val = readw(U300_SYSCON_VBASE + U300_SYSCON_SMCR) |
- U300_SYSCON_SMCR_SEMI_SREFREQ_ENABLE;
- writew(val, U300_SYSCON_VBASE + U300_SYSCON_SMCR);
-}
-
/* Forward declare this function from the watchdog */
void coh901327_watchdog_reset(void);
while (1);
}
-MACHINE_START(U300, "Ericsson AB U335 S335/B335 Prototype Board")
- /* Maintainer: Linus Walleij <linus.walleij@stericsson.com> */
- .atag_offset = 0x100,
+/* These are mostly to get the right device names for the clock lookups */
+static struct of_dev_auxdata u300_auxdata_lookup[] __initdata = {
+ OF_DEV_AUXDATA("stericsson,pinctrl-u300", U300_SYSCON_BASE,
+ "pinctrl-u300", NULL),
+ OF_DEV_AUXDATA("stericsson,gpio-coh901", U300_GPIO_BASE,
+ "u300-gpio", &u300_gpio_plat),
+ OF_DEV_AUXDATA("stericsson,coh901327", U300_WDOG_BASE,
+ "coh901327_wdog", NULL),
+ OF_DEV_AUXDATA("stericsson,coh901331", U300_RTC_BASE,
+ "rtc-coh901331", NULL),
+ OF_DEV_AUXDATA("stericsson,coh901318", U300_DMAC_BASE,
+ "coh901318", NULL),
+ OF_DEV_AUXDATA("stericsson,fsmc-nand", U300_NAND_IF_PHYS_BASE,
+ "fsmc-nand", NULL),
+ OF_DEV_AUXDATA("arm,primecell", U300_UART0_BASE,
+ "uart0", NULL),
+ OF_DEV_AUXDATA("arm,primecell", U300_UART1_BASE,
+ "uart1", NULL),
+ OF_DEV_AUXDATA("arm,primecell", U300_SPI_BASE,
+ "pl022", NULL),
+ OF_DEV_AUXDATA("st,ddci2c", U300_I2C0_BASE,
+ "stu300.0", NULL),
+ OF_DEV_AUXDATA("st,ddci2c", U300_I2C1_BASE,
+ "stu300.1", NULL),
+ OF_DEV_AUXDATA("arm,primecell", U300_MMCSD_BASE,
+ "mmci", NULL),
+ { /* sentinel */ },
+};
+
+static void __init u300_init_irq_dt(void)
+{
+ struct device_node *syscon;
+ struct clk *clk;
+
+ syscon = of_find_node_by_path("/syscon@c0011000");
+ if (!syscon) {
+ pr_crit("could not find syscon node\n");
+ return;
+ }
+ syscon_base = of_iomap(syscon, 0);
+ if (!syscon_base) {
+ pr_crit("could not remap syscon\n");
+ return;
+ }
+ /* initialize clocking early, we want to clock the INTCON */
+ u300_clk_init(syscon_base);
+
+ /* Bootstrap EMIF and SEMI clocks */
+ clk = clk_get_sys("pl172", NULL);
+ BUG_ON(IS_ERR(clk));
+ clk_prepare_enable(clk);
+ clk = clk_get_sys("semi", NULL);
+ BUG_ON(IS_ERR(clk));
+ clk_prepare_enable(clk);
+
+ /* Clock the interrupt controller */
+ clk = clk_get_sys("intcon", NULL);
+ BUG_ON(IS_ERR(clk));
+ clk_prepare_enable(clk);
+
+ irqchip_init();
+}
+
+static void __init u300_init_machine_dt(void)
+{
+ u16 val;
+
+ /* Check what platform we run and print some status information */
+ u300_init_check_chip();
+
+ /* Initialize pinmuxing */
+ pinctrl_register_mappings(u300_pinmux_map,
+ ARRAY_SIZE(u300_pinmux_map));
+
+ of_platform_populate(NULL, of_default_bus_match_table,
+ u300_auxdata_lookup, NULL);
+
+ /* Enable SEMI self refresh */
+ val = readw(syscon_base + U300_SYSCON_SMCR) |
+ U300_SYSCON_SMCR_SEMI_SREFREQ_ENABLE;
+ writew(val, syscon_base + U300_SYSCON_SMCR);
+}
+
+static const char * u300_board_compat[] = {
+ "stericsson,u300",
+ NULL,
+};
+
+DT_MACHINE_START(U300_DT, "U300 S335/B335 (Device Tree)")
.map_io = u300_map_io,
- .nr_irqs = 0,
- .init_irq = u300_init_irq,
- .init_time = u300_timer_init,
- .init_machine = u300_init_machine,
+ .init_irq = u300_init_irq_dt,
+ .init_time = clocksource_of_init,
+ .init_machine = u300_init_machine_dt,
.restart = u300_restart,
+ .dt_compat = u300_board_compat,
MACHINE_END
projects / firefly-linux-kernel-4.4.55.git / blobdiff