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@@ -25,138 +25,308 @@
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#include <linux/slab.h>
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#include <linux/irq.h>
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#include <linux/dma-mapping.h>
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-#include <linux/irqchip/arm-vic.h>
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+#include <linux/irqchip.h>
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#include <linux/platform_data/clk-nomadik.h>
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#include <linux/platform_data/pinctrl-nomadik.h>
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+#include <linux/pinctrl/machine.h>
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+#include <linux/platform_data/clocksource-nomadik-mtu.h>
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+#include <linux/of_irq.h>
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+#include <linux/of_gpio.h>
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+#include <linux/of_address.h>
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+#include <linux/of_platform.h>
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+#include <linux/mtd/fsmc.h>
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+#include <linux/gpio.h>
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+#include <linux/amba/mmci.h>
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-#include <mach/hardware.h>
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#include <mach/irqs.h>
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+#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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+#include <asm/mach/time.h>
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+#include <asm/mach-types.h>
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#include <asm/cacheflush.h>
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#include <asm/hardware/cache-l2x0.h>
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-#include "cpu-8815.h"
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+/*
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+ * These are the only hard-coded address offsets we still have to use.
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+ */
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+#define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */
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+#define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */
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+#define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */
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+#define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */
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+#define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */
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+#define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */
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+#define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */
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+#define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */
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+#define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */
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+#define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */
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+#define NOMADIK_XTI_BASE 0x101A0000 /* XTI */
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+#define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */
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+#define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */
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+#define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */
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+#define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */
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+#define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */
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+#define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */
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+#define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */
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+#define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */
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+#define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */
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+#define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */
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+#define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */
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+#define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */
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+#define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */
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+#define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */
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+#define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */
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+#define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */
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+#define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */
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+#define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */
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+#define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */
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+#define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */
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+#define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */
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+#define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */
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+#define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */
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+#define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */
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+#define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */
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+#define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */
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+#define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */
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+#define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */
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+#define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */
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+#define NOMADIK_UART1_VBASE 0xF01FB000
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-/* The 8815 has 4 GPIO blocks, let's register them immediately */
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-static resource_size_t __initdata cpu8815_gpio_base[] = {
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- NOMADIK_GPIO0_BASE,
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- NOMADIK_GPIO1_BASE,
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- NOMADIK_GPIO2_BASE,
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- NOMADIK_GPIO3_BASE,
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+static unsigned long out_low[] = { PIN_OUTPUT_LOW };
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+static unsigned long out_high[] = { PIN_OUTPUT_HIGH };
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+static unsigned long in_nopull[] = { PIN_INPUT_NOPULL };
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+static unsigned long in_pullup[] = { PIN_INPUT_PULLUP };
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+
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+static struct pinctrl_map __initdata nhk8815_pinmap[] = {
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+ PIN_MAP_MUX_GROUP_DEFAULT("uart0", "pinctrl-stn8815", "u0_a_1", "u0"),
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+ PIN_MAP_MUX_GROUP_DEFAULT("uart1", "pinctrl-stn8815", "u1_a_1", "u1"),
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+ /* Hog in MMC/SD card mux */
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+ PIN_MAP_MUX_GROUP_HOG_DEFAULT("pinctrl-stn8815", "mmcsd_a_1", "mmcsd"),
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+ /* MCCLK */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO8_B10", out_low),
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+ /* MCCMD */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO9_A10", in_pullup),
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+ /* MCCMDDIR */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO10_C11", out_high),
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+ /* MCDAT3-0 */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO11_B11", in_pullup),
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO12_A11", in_pullup),
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO13_C12", in_pullup),
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO14_B12", in_pullup),
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+ /* MCDAT0DIR */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO15_A12", out_high),
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+ /* MCDAT31DIR */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO16_C13", out_high),
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+ /* MCMSFBCLK */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO24_C15", in_pullup),
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+ /* CD input GPIO */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO111_H21", in_nopull),
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+ /* CD bias drive */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO112_J21", out_low),
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+ /* I2C0 */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO62_D3", in_pullup),
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO63_D2", in_pullup),
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+ /* I2C1 */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO53_L4", in_pullup),
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO54_L3", in_pullup),
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+ /* I2C2 */
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO73_C21", in_pullup),
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+ PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO74_C20", in_pullup),
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};
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-static struct platform_device *
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-cpu8815_add_gpio(int id, resource_size_t addr, int irq,
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- struct nmk_gpio_platform_data *pdata)
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+/* This is needed for LL-debug/earlyprintk/debug-macro.S */
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+static struct map_desc cpu8815_io_desc[] __initdata = {
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+ {
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+ .virtual = NOMADIK_UART1_VBASE,
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+ .pfn = __phys_to_pfn(NOMADIK_UART1_BASE),
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+ .length = SZ_4K,
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+ .type = MT_DEVICE,
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+ },
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+};
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+
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+static void __init cpu8815_map_io(void)
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{
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- struct resource resources[] = {
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- {
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- .start = addr,
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- .end = addr + 127,
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- .flags = IORESOURCE_MEM,
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- },
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- {
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- .start = irq,
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- .end = irq,
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- .flags = IORESOURCE_IRQ,
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- }
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- };
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-
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- return platform_device_register_resndata(NULL, "gpio", id,
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- resources, ARRAY_SIZE(resources),
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- pdata, sizeof(*pdata));
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+ iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
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}
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-void cpu8815_add_gpios(resource_size_t *base, int num, int irq,
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- struct nmk_gpio_platform_data *pdata)
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+static void cpu8815_restart(char mode, const char *cmd)
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{
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- int first = 0;
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- int i;
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+ void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K);
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- for (i = 0; i < num; i++, first += 32, irq++) {
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- pdata->first_gpio = first;
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- pdata->first_irq = NOMADIK_GPIO_TO_IRQ(first);
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- pdata->num_gpio = 32;
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+ /* FIXME: use egpio when implemented */
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- cpu8815_add_gpio(i, base[i], irq, pdata);
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- }
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+ /* Write anything to Reset status register */
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+ writel(1, srcbase + 0x18);
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}
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-static inline void
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-cpu8815_add_pinctrl(struct device *parent, const char *name)
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+/* Initial value for SRC control register: all timers use MXTAL/8 source */
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+#define SRC_CR_INIT_MASK 0x00007fff
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+#define SRC_CR_INIT_VAL 0x2aaa8000
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+
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+static void __init cpu8815_timer_init_of(void)
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{
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- struct platform_device_info pdevinfo = {
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- .parent = parent,
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- .name = name,
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- .id = -1,
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- };
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+ struct device_node *mtu;
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+ void __iomem *base;
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+ int irq;
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+ u32 src_cr;
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+
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+ /* We need this to be up now */
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+ nomadik_clk_init();
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+
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+ mtu = of_find_node_by_path("/mtu0");
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+ if (!mtu)
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+ return;
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+ base = of_iomap(mtu, 0);
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+ if (WARN_ON(!base))
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+ return;
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+ irq = irq_of_parse_and_map(mtu, 0);
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- platform_device_register_full(&pdevinfo);
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+ pr_info("Remapped MTU @ %p, irq: %d\n", base, irq);
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+
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+ /* Configure timer sources in "system reset controller" ctrl reg */
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+ src_cr = readl(base);
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+ src_cr &= SRC_CR_INIT_MASK;
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+ src_cr |= SRC_CR_INIT_VAL;
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+ writel(src_cr, base);
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+
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+ nmdk_timer_init(base, irq);
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}
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-static int __init cpu8815_init(void)
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+static struct fsmc_nand_timings cpu8815_nand_timings = {
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+ .thiz = 0,
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+ .thold = 0x10,
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+ .twait = 0x0A,
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+ .tset = 0,
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+};
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+
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+static struct fsmc_nand_platform_data cpu8815_nand_data = {
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+ .nand_timings = &cpu8815_nand_timings,
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+};
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+
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+/*
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+ * The SMSC911x IRQ is connected to a GPIO pin, but the driver expects
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+ * to simply request an IRQ passed as a resource. So the GPIO pin needs
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+ * to be requested by this hog and set as input.
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+ */
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+static int __init cpu8815_eth_init(void)
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{
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- struct nmk_gpio_platform_data pdata = {
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- /* No custom data yet */
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- };
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-
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- cpu8815_add_gpios(cpu8815_gpio_base, ARRAY_SIZE(cpu8815_gpio_base),
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- IRQ_GPIO0, &pdata);
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- cpu8815_add_pinctrl(NULL, "pinctrl-stn8815");
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- amba_apb_device_add(NULL, "rng", NOMADIK_RNG_BASE, SZ_4K, 0, 0, NULL, 0);
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- amba_apb_device_add(NULL, "rtc-pl031", NOMADIK_RTC_BASE, SZ_4K, IRQ_RTC_RTT, 0, NULL, 0);
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+ struct device_node *eth;
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+ int gpio, irq, err;
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+
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+ eth = of_find_node_by_path("/usb-s8815/ethernet-gpio");
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+ if (!eth) {
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+ pr_info("could not find any ethernet GPIO\n");
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+ return 0;
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+ }
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+ gpio = of_get_gpio(eth, 0);
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+ err = gpio_request(gpio, "eth_irq");
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+ if (err) {
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+ pr_info("failed to request ethernet GPIO\n");
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+ return -ENODEV;
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+ }
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+ err = gpio_direction_input(gpio);
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+ if (err) {
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+ pr_info("failed to set ethernet GPIO as input\n");
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+ return -ENODEV;
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+ }
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+ irq = gpio_to_irq(gpio);
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+ pr_info("enabled USB-S8815 ethernet GPIO %d, IRQ %d\n", gpio, irq);
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return 0;
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}
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-arch_initcall(cpu8815_init);
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+device_initcall(cpu8815_eth_init);
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-/* All SoC devices live in the same area (see hardware.h) */
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-static struct map_desc nomadik_io_desc[] __initdata = {
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- {
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- .virtual = NOMADIK_IO_VIRTUAL,
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- .pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL),
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- .length = NOMADIK_IO_SIZE,
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- .type = MT_DEVICE,
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- }
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- /* static ram and secured ram may be added later */
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+/*
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+ * TODO:
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+ * cannot be set from device tree, convert to a proper DT
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+ * binding.
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+ */
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+static struct mmci_platform_data mmcsd_plat_data = {
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+ .ocr_mask = MMC_VDD_29_30,
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};
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-void __init cpu8815_map_io(void)
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+/*
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+ * This GPIO pin turns on a line that is used to detect card insertion
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+ * on this board.
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+ */
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+static int __init cpu8815_mmcsd_init(void)
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{
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- iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
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-}
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+ struct device_node *cdbias;
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+ int gpio, err;
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-void __init cpu8815_init_irq(void)
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-{
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- /* This modified VIC cell has two register blocks, at 0 and 0x20 */
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- vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0);
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- vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
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-
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- /*
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- * Init clocks here so that they are available for system timer
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- * initialization.
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- */
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- nomadik_clk_init();
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+ cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio");
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+ if (!cdbias) {
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+ pr_info("could not find MMC/SD card detect bias node\n");
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+ return 0;
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+ }
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+ gpio = of_get_gpio(cdbias, 0);
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+ if (gpio < 0) {
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+ pr_info("could not obtain MMC/SD card detect bias GPIO\n");
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+ return 0;
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+ }
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+ err = gpio_request(gpio, "card detect bias");
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+ if (err) {
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+ pr_info("failed to request card detect bias GPIO %d\n", gpio);
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+ return -ENODEV;
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+ }
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+ err = gpio_direction_output(gpio, 0);
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+ if (err){
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+ pr_info("failed to set GPIO %d as output, low\n", gpio);
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+ return err;
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+ }
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+ pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio);
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+ return 0;
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}
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+device_initcall(cpu8815_mmcsd_init);
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-/*
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- * This function is called from the board init ("init_machine").
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- */
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- void __init cpu8815_platform_init(void)
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+
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+/* These are mostly to get the right device names for the clock lookups */
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+static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = {
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+ OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO0_BASE,
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+ "gpio.0", NULL),
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+ OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO1_BASE,
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+ "gpio.1", NULL),
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+ OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO2_BASE,
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+ "gpio.2", NULL),
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+ OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO3_BASE,
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+ "gpio.3", NULL),
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+ OF_DEV_AUXDATA("stericsson,nmk-pinctrl-stn8815", 0,
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+ "pinctrl-stn8815", NULL),
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+ OF_DEV_AUXDATA("arm,primecell", NOMADIK_UART0_BASE,
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+ "uart0", NULL),
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+ OF_DEV_AUXDATA("arm,primecell", NOMADIK_UART1_BASE,
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+ "uart1", NULL),
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+ OF_DEV_AUXDATA("arm,primecell", NOMADIK_RNG_BASE,
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+ "rng", NULL),
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+ OF_DEV_AUXDATA("arm,primecell", NOMADIK_RTC_BASE,
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+ "rtc-pl031", NULL),
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+ OF_DEV_AUXDATA("stericsson,fsmc-nand", NOMADIK_FSMC_BASE,
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+ "fsmc-nand", &cpu8815_nand_data),
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+ OF_DEV_AUXDATA("arm,primecell", NOMADIK_SDI_BASE,
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+ "mmci", &mmcsd_plat_data),
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+ { /* sentinel */ },
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+};
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+
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+static void __init cpu8815_init_of(void)
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{
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#ifdef CONFIG_CACHE_L2X0
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/* At full speed latency must be >=2, so 0x249 in low bits */
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- l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff);
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+ l2x0_of_init(0x00730249, 0xfe000fff);
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#endif
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- return;
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+ pinctrl_register_mappings(nhk8815_pinmap, ARRAY_SIZE(nhk8815_pinmap));
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+ of_platform_populate(NULL, of_default_bus_match_table,
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+ cpu8815_auxdata_lookup, NULL);
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}
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-void cpu8815_restart(char mode, const char *cmd)
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-{
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- void __iomem *src_rstsr = io_p2v(NOMADIK_SRC_BASE + 0x18);
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-
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- /* FIXME: use egpio when implemented */
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+static const char * cpu8815_board_compat[] = {
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+ "calaosystems,usb-s8815",
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+ NULL,
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+};
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- /* Write anything to Reset status register */
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- writel(1, src_rstsr);
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-}
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+DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
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+ .map_io = cpu8815_map_io,
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+ .init_irq = irqchip_init,
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+ .init_time = cpu8815_timer_init_of,
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+ .init_machine = cpu8815_init_of,
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+ .restart = cpu8815_restart,
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+ .dt_compat = cpu8815_board_compat,
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+MACHINE_END
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Olof Johansson