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ramips: add watchdog device for RT305x 

SVN-Revision: 25127
owl
Gabor Juhos 2011-01-26 20:48:46 +00:00
parent 16366feafb
commit 42e36cf732
3 changed files with 34 additions and 0 deletions
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5
target/linux/ramips/files/arch/mips/include/asm/mach-ralink/rt305x_regs.h
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@ -62,6 +62,11 @@
#define SYSTEM_CONFIG_CPUCLK_MASK 0x1 #define SYSTEM_CONFIG_CPUCLK_MASK 0x1
#define SYSTEM_CONFIG_CPUCLK_320 0x0 #define SYSTEM_CONFIG_CPUCLK_320 0x0
#define SYSTEM_CONFIG_CPUCLK_384 0x1 #define SYSTEM_CONFIG_CPUCLK_384 0x1
#define SYSTEM_CONFIG_SRAM_CS0_MODE_SHIFT 2
#define SYSTEM_CONFIG_SRAM_CS0_MODE_MASK 0x3
#define SYSTEM_CONFIG_SRAM_CS0_MODE_NORMAL 0
#define SYSTEM_CONFIG_SRAM_CS0_MODE_WDT 1
#define SYSTEM_CONFIG_SRAM_CS0_MODE_BTCOEX 2
#define RT305X_GPIO_MODE_I2C BIT(0) #define RT305X_GPIO_MODE_I2C BIT(0)
#define RT305X_GPIO_MODE_SPI BIT(1) #define RT305X_GPIO_MODE_SPI BIT(1)

28
target/linux/ramips/files/arch/mips/ralink/rt305x/devices.c
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@ -189,3 +189,31 @@ void __init rt305x_register_wifi(void)
{ {
platform_device_register(&rt305x_wifi_device); platform_device_register(&rt305x_wifi_device);
} }
static struct resource rt305x_wdt_resources[] = {
{
.start = RT305X_TIMER_BASE,
.end = RT305X_TIMER_BASE + RT305X_TIMER_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device rt305x_wdt_device = {
.name = "ramips-wdt",
.id = -1,
.resource = rt305x_wdt_resources,
.num_resources = ARRAY_SIZE(rt305x_wdt_resources),
};
void __init rt305x_register_wdt(void)
{
u32 t;
/* enable WDT reset output on pin SRAM_CS_N */
t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
t |= SYSTEM_CONFIG_SRAM_CS0_MODE_WDT <<
SYSTEM_CONFIG_SRAM_CS0_MODE_SHIFT;
rt305x_sysc_wr(t, SYSC_REG_SYSTEM_CONFIG);
platform_device_register(&rt305x_wdt_device);
}

1
target/linux/ramips/files/arch/mips/ralink/rt305x/devices.h
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@ -20,6 +20,7 @@ extern struct rt305x_esw_platform_data rt305x_esw_data;
void rt305x_register_flash(unsigned int id, struct physmap_flash_data *pdata); void rt305x_register_flash(unsigned int id, struct physmap_flash_data *pdata);
void rt305x_register_ethernet(void); void rt305x_register_ethernet(void);
void rt305x_register_wifi(void); void rt305x_register_wifi(void);
void rt305x_register_wdt(void);
#endif /* __RT305X_DEVICES_H */ #endif /* __RT305X_DEVICES_H */