[PATCH linux dev-4.13 1/3] watchdog: aspeed: Fix translation of reset mode to ctrl register

[Eddie James]

From: Milton Miller <miltonm at us.ibm.com>

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: dc36d8707159 ("drivers/watchdog: ASPEED reference dev tree properties for config")
Signed-off-by: Milton Miller <miltonm at us.ibm.com>
Signed-off-by: Eddie James <eajames at linux.vnet.ibm.com>
---
 drivers/watchdog/aspeed_wdt.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c
index ca5b91e..d1987d6 100644
--- a/drivers/watchdog/aspeed_wdt.c
+++ b/drivers/watchdog/aspeed_wdt.c
@@ -232,11 +232,14 @@ 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;
 	}
-- 
1.8.3.1