driver: watchdog: reset watchdog in designware_wdt_stop() function
In uboot command line environment, watchdog is not able to be
stopped with below commands:
SOCFPGA_STRATIX10 # wdt dev watchdog@ffd00200
SOCFPGA_STRATIX10 # wdt stop
Refer to watchdog driver in linux kernel, it is also need to reset
watchdog after disable it so that the disable action takes effect.
Signed-off-by: Meng Li <Meng.Li@windriver.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Sean Anderson <sean.anderson@seco.com>
diff --git a/drivers/watchdog/designware_wdt.c b/drivers/watchdog/designware_wdt.c
index 9e54871..afed81e 100644
--- a/drivers/watchdog/designware_wdt.c
+++ b/drivers/watchdog/designware_wdt.c
@@ -22,6 +22,7 @@
struct designware_wdt_priv {
void __iomem *base;
unsigned int clk_khz;
+ struct reset_ctl_bulk *resets;
};
/*
@@ -95,6 +96,18 @@
designware_wdt_reset(dev);
writel(0, priv->base + DW_WDT_CR);
+ if (CONFIG_IS_ENABLED(DM_RESET)) {
+ int ret;
+
+ ret = reset_assert_bulk(priv->resets);
+ if (ret)
+ return ret;
+
+ ret = reset_deassert_bulk(priv->resets);
+ if (ret)
+ return ret;
+ }
+
return 0;
}
@@ -143,13 +156,11 @@
#endif
if (CONFIG_IS_ENABLED(DM_RESET)) {
- struct reset_ctl_bulk resets;
-
- ret = reset_get_bulk(dev, &resets);
+ ret = reset_get_bulk(dev, priv->resets);
if (ret)
goto err;
- ret = reset_deassert_bulk(&resets);
+ ret = reset_deassert_bulk(priv->resets);
if (ret)
goto err;
}