4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Milton Miller miltonm@us.ibm.com
[ Upstream commit d2fc8db691bf3197d43b2afb553311a9bf257bff ]
Assert RESET_SYSTEM bit for any reset and set MODE field from reset type.
The watchdog control register has a RESET_SYSTEM bit that is really closer to activate a reset, and RESET_SYSTEM_MODE field that chooses how much to reset.
Before this patch, a node without these optional property would do a SOC reset, but a node with properties requesting a cpu or SOC reset would do nothing and a node requesting a system reset would do a SOC reset.
Fixes: b7f0b8ad25f3 ("drivers/watchdog: ASPEED reference dev tree properties for config") Signed-off-by: Milton Miller miltonm@us.ibm.com Signed-off-by: Eddie James eajames@linux.vnet.ibm.com Reviewed-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Wim Van Sebroeck wim@iguana.be Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/watchdog/aspeed_wdt.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/watchdog/aspeed_wdt.c +++ b/drivers/watchdog/aspeed_wdt.c @@ -234,11 +234,14 @@ static int aspeed_wdt_probe(struct platf 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; }