diff options
| author | Kevin Hilman <khilman@linaro.org> | 2013-08-21 16:24:22 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@linaro.org> | 2013-08-21 16:24:22 -0700 |
| commit | fe870ae70bda4bb19ae6920a62e7d05f1dde9b2b (patch) | |
| tree | 5d4aef6d341f84aef6c09a8025004c954fd3f792 /arch | |
| parent | f7b29518c33a0fe48cf13b7e2eb04a5fdb11293d (diff) | |
| parent | d18fd9445b18c4adf56cfc58c378c702c8edd0da (diff) | |
Merge tag 'sunxi-core-for-3.12-2' of https://github.com/mripard/linux into next/soc
Allwinner sunXi core additions for 3.12, take 2
These patches add machine support for the Allwinner A20 and A31 SoCs
* tag 'sunxi-core-for-3.12-2' of https://github.com/mripard/linux:
ARM: sunxi: Introduce Allwinner A20 support
ARM: sun6i: Add restart code for the A31
ARM: sunxi: Add the Allwinner A31 compatible to the machine definition
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-sunxi/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mach-sunxi/sunxi.c | 45 |
2 files changed, 44 insertions, 3 deletions
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig index 5b045e302b4..3ab2f65f8a5 100644 --- a/arch/arm/mach-sunxi/Kconfig +++ b/arch/arm/mach-sunxi/Kconfig @@ -10,3 +10,5 @@ config ARCH_SUNXI select SPARSE_IRQ select SUN4I_TIMER select PINCTRL_SUNXI + select ARM_GIC + select HAVE_SMP diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c index 38a3c55527c..e79fb346934 100644 --- a/arch/arm/mach-sunxi/sunxi.c +++ b/arch/arm/mach-sunxi/sunxi.c @@ -27,10 +27,19 @@ #include <asm/system_misc.h> #define SUN4I_WATCHDOG_CTRL_REG 0x00 -#define SUN4I_WATCHDOG_CTRL_RESTART (1 << 0) +#define SUN4I_WATCHDOG_CTRL_RESTART BIT(0) #define SUN4I_WATCHDOG_MODE_REG 0x04 -#define SUN4I_WATCHDOG_MODE_ENABLE (1 << 0) -#define SUN4I_WATCHDOG_MODE_RESET_ENABLE (1 << 1) +#define SUN4I_WATCHDOG_MODE_ENABLE BIT(0) +#define SUN4I_WATCHDOG_MODE_RESET_ENABLE BIT(1) + +#define SUN6I_WATCHDOG1_IRQ_REG 0x00 +#define SUN6I_WATCHDOG1_CTRL_REG 0x10 +#define SUN6I_WATCHDOG1_CTRL_RESTART BIT(0) +#define SUN6I_WATCHDOG1_CONFIG_REG 0x14 +#define SUN6I_WATCHDOG1_CONFIG_RESTART BIT(0) +#define SUN6I_WATCHDOG1_CONFIG_IRQ BIT(1) +#define SUN6I_WATCHDOG1_MODE_REG 0x18 +#define SUN6I_WATCHDOG1_MODE_ENABLE BIT(0) static void __iomem *wdt_base; @@ -56,8 +65,36 @@ static void sun4i_restart(enum reboot_mode mode, const char *cmd) } } +static void sun6i_restart(enum reboot_mode mode, const char *cmd) +{ + if (!wdt_base) + return; + + /* Disable interrupts */ + writel(0, wdt_base + SUN6I_WATCHDOG1_IRQ_REG); + + /* We want to disable the IRQ and just reset the whole system */ + writel(SUN6I_WATCHDOG1_CONFIG_RESTART, + wdt_base + SUN6I_WATCHDOG1_CONFIG_REG); + + /* Enable timer. The default and lowest interval value is 0.5s */ + writel(SUN6I_WATCHDOG1_MODE_ENABLE, + wdt_base + SUN6I_WATCHDOG1_MODE_REG); + + /* Restart the watchdog. */ + writel(SUN6I_WATCHDOG1_CTRL_RESTART, + wdt_base + SUN6I_WATCHDOG1_CTRL_REG); + + while (1) { + mdelay(5); + writel(SUN6I_WATCHDOG1_MODE_ENABLE, + wdt_base + SUN6I_WATCHDOG1_MODE_REG); + } +} + static struct of_device_id sunxi_restart_ids[] = { { .compatible = "allwinner,sun4i-wdt", .data = sun4i_restart }, + { .compatible = "allwinner,sun6i-wdt", .data = sun6i_restart }, { /*sentinel*/ } }; @@ -96,6 +133,8 @@ static const char * const sunxi_board_dt_compat[] = { "allwinner,sun4i-a10", "allwinner,sun5i-a10s", "allwinner,sun5i-a13", + "allwinner,sun6i-a31", + "allwinner,sun7i-a20", NULL, }; |