Add WDIOF_EXTERN1 and WDIOF_CARDRESET bootstatus in ast2500/ast2600 Regarding the AST2600 specification, the WDTn Timeout Status Register (WDT10) has bit 1 reserved. Bit 1 of the status register indicates on ast2500 if the boot was from the second boot source. It does not indicate that the most recent reset was triggered by the watchdog. The code should just be changed to set WDIOF_CARDRESET if bit 0 of the status register is set. Include SCU register to veriy WDIOF_EXTERN1 in ast2600 SCU74 or ast2500 SCU3C when bit1 is set. v3 -> v4 - Add error handling for syscon_regmap_lookup_by_phandle and regmap_read. v2 -> v3 - Fixed WDIOF_CARDRESET status bit check and added support for WDIOF_EXTERN1 on ast2500 and ast2600. v1 -> v2 - Add comment and support WDIOF_CARDRESET in ast2600 v1 - Patch 0001 - Add WDIOF_EXTERN1 bootstatus --- Peter Yin (4): ARM: dts: aspeed: Add the AST2500 WDT with SCU register ARM: dts: aspeed: Add the AST2600 WDT with SCU register dt-bindings: watchdog: aspeed-wdt: Add aspeed,scu drivers: watchdog: ast2500 and ast2600 support bootstatus .../bindings/watchdog/aspeed-wdt.txt | 4 ++ arch/arm/boot/dts/aspeed/aspeed-g5.dtsi | 3 + arch/arm/boot/dts/aspeed/aspeed-g6.dtsi | 4 ++ drivers/watchdog/aspeed_wdt.c | 60 ++++++++++++++----- 4 files changed, 55 insertions(+), 16 deletions(-) -- 2.25.1
