diff options
Diffstat (limited to 'meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0116-watchdog-aspeed-fix-AST2600-support.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0116-watchdog-aspeed-fix-AST2600-support.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0116-watchdog-aspeed-fix-AST2600-support.patch b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0116-watchdog-aspeed-fix-AST2600-support.patch new file mode 100644 index 000000000..3f71219de --- /dev/null +++ b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0116-watchdog-aspeed-fix-AST2600-support.patch @@ -0,0 +1,49 @@ +From f911c7c994bf57685254f3b92e03e999d9cf058a Mon Sep 17 00:00:00 2001 +From: Jae Hyun Yoo <jae.hyun.yoo@intel.com> +Date: Thu, 25 Jun 2020 23:56:15 -0700 +Subject: [PATCH] watchdog: aspeed: fix AST2600 support + +AST2600 provides different function of WDT0C[4] and it doesn't +provides WDT10[1] so this commit fixes driver to make it don't +use these register bits in case of AST2600. + +Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com> +--- + drivers/watchdog/aspeed_wdt.c | 13 +++++++------ + 1 file changed, 7 insertions(+), 6 deletions(-) + +diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c +index 7e00960651fa..5a74b439e3b1 100644 +--- a/drivers/watchdog/aspeed_wdt.c ++++ b/drivers/watchdog/aspeed_wdt.c +@@ -279,6 +279,8 @@ static int aspeed_wdt_probe(struct platform_device *pdev) + * - ast2500 only runs at 1MHz, hard coding bit 4 to 1 + * - ast2600 always runs at 1MHz + * ++ * Note: ast2600 uses WDT0C[4] as 'Enable WDT to be reset by SOC reset' ++ * + * Set the ast2400 to run at 1MHz as it simplifies the driver. + */ + if (of_device_is_compatible(np, "aspeed,ast2400-wdt")) +@@ -367,13 +369,12 @@ 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; +- +- if (of_device_is_compatible(np, "aspeed,ast2400-wdt") || +- of_device_is_compatible(np, "aspeed,ast2500-wdt")) ++ if (!of_device_is_compatible(np, "aspeed,ast2600-wdt")) { ++ status = readl(wdt->base + WDT_TIMEOUT_STATUS); ++ if (status & WDT_TIMEOUT_STATUS_BOOT_SECONDARY) { ++ wdt->wdd.bootstatus = WDIOF_CARDRESET; + wdt->wdd.groups = bswitch_groups; ++ } + } + + dev_set_drvdata(dev, wdt); +-- +2.7.4 + |