diff options
Diffstat (limited to 'drivers/watchdog/aspeed_wdt.c')
| -rw-r--r-- | drivers/watchdog/aspeed_wdt.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c index ca5b91e2eb92..1abe4d021fd2 100644 --- a/drivers/watchdog/aspeed_wdt.c +++ b/drivers/watchdog/aspeed_wdt.c @@ -46,6 +46,7 @@ MODULE_DEVICE_TABLE(of, aspeed_wdt_of_table); #define WDT_RELOAD_VALUE 0x04 #define WDT_RESTART 0x08 #define WDT_CTRL 0x0C +#define WDT_CTRL_BOOT_SECONDARY BIT(7) #define WDT_CTRL_RESET_MODE_SOC (0x00 << 5) #define WDT_CTRL_RESET_MODE_FULL_CHIP (0x01 << 5) #define WDT_CTRL_RESET_MODE_ARM_CPU (0x10 << 5) @@ -54,6 +55,8 @@ MODULE_DEVICE_TABLE(of, aspeed_wdt_of_table); #define WDT_CTRL_WDT_INTR BIT(2) #define WDT_CTRL_RESET_SYSTEM BIT(1) #define WDT_CTRL_ENABLE BIT(0) +#define WDT_TIMEOUT_STATUS 0x10 +#define WDT_TIMEOUT_STATUS_BOOT_SECONDARY BIT(1) /* * WDT_RESET_WIDTH controls the characteristics of the external pulse (if @@ -158,6 +161,7 @@ static int aspeed_wdt_restart(struct watchdog_device *wdd, { struct aspeed_wdt *wdt = to_aspeed_wdt(wdd); + wdt->ctrl &= ~WDT_CTRL_BOOT_SECONDARY; aspeed_wdt_enable(wdt, 128 * WDT_RATE_1MHZ / 1000); mdelay(1000); @@ -190,6 +194,7 @@ static int aspeed_wdt_probe(struct platform_device *pdev) struct device_node *np; const char *reset_type; u32 duration; + u32 status; int ret; wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL); @@ -232,16 +237,21 @@ static int aspeed_wdt_probe(struct platform_device *pdev) wdt->ctrl |= WDT_CTRL_RESET_MODE_SOC | WDT_CTRL_RESET_SYSTEM; } else { if (!strcmp(reset_type, "cpu")) - wdt->ctrl |= WDT_CTRL_RESET_MODE_ARM_CPU; + wdt->ctrl |= WDT_CTRL_RESET_MODE_ARM_CPU | + WDT_CTRL_RESET_SYSTEM; else if (!strcmp(reset_type, "soc")) - wdt->ctrl |= WDT_CTRL_RESET_MODE_SOC; + wdt->ctrl |= WDT_CTRL_RESET_MODE_SOC | + WDT_CTRL_RESET_SYSTEM; else if (!strcmp(reset_type, "system")) - wdt->ctrl |= WDT_CTRL_RESET_SYSTEM; + wdt->ctrl |= WDT_CTRL_RESET_MODE_FULL_CHIP | + WDT_CTRL_RESET_SYSTEM; else if (strcmp(reset_type, "none")) return -EINVAL; } if (of_property_read_bool(np, "aspeed,external-signal")) wdt->ctrl |= WDT_CTRL_WDT_EXT; + if (of_property_read_bool(np, "aspeed,alt-boot")) + wdt->ctrl |= WDT_CTRL_BOOT_SECONDARY; if (readl(wdt->base + WDT_CTRL) & WDT_CTRL_ENABLE) { /* @@ -300,6 +310,10 @@ static int aspeed_wdt_probe(struct platform_device *pdev) writel(duration - 1, wdt->base + WDT_RESET_WIDTH); } + status = readl(wdt->base + WDT_TIMEOUT_STATUS); + if (status & WDT_TIMEOUT_STATUS_BOOT_SECONDARY) + wdt->wdd.bootstatus = WDIOF_CARDRESET; + ret = devm_watchdog_register_device(&pdev->dev, &wdt->wdd); if (ret) { dev_err(&pdev->dev, "failed to register\n"); |