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Diffstat (limited to 'arch/arm/mach-sunxi/sunxi.c')
-rw-r--r--arch/arm/mach-sunxi/sunxi.c45
1 files changed, 42 insertions, 3 deletions
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,
};