4.16-stable review patch. If anyone has any objections, please let me know.
------------------
From: Milton Miller <miltonm@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Signed-off-by: Eddie James <eajames@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Wim Van Sebroeck <wim@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
}
