[PATCH v1] pinctrl: nuvoton: set output state before enabling the output

[Jim Liu]

The default output state may be different to request,
change the configuration sequence to avoid glitch.

Signed-off-by: Jim Liu <JJLIU0 at nuvoton.com>
---
 drivers/gpio/npcm_gpio.c                  | 6 +++---
 drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c | 4 ++--
 drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c | 4 ++--
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpio/npcm_gpio.c b/drivers/gpio/npcm_gpio.c
index 8afd57fa8e..98e5dc79c1 100644
--- a/drivers/gpio/npcm_gpio.c
+++ b/drivers/gpio/npcm_gpio.c
@@ -37,14 +37,14 @@ static int npcm_gpio_direction_output(struct udevice *dev, unsigned int offset,
 {
 	struct npcm_gpio_priv *priv = dev_get_priv(dev);
 
-	clrbits_le32(priv->base + GPIO_IEM, BIT(offset));
-	writel(BIT(offset), priv->base + GPIO_OES);
-
 	if (value)
 		setbits_le32(priv->base + GPIO_DOUT, BIT(offset));
 	else
 		clrbits_le32(priv->base + GPIO_DOUT, BIT(offset));
 
+	clrbits_le32(priv->base + GPIO_IEM, BIT(offset));
+	writel(BIT(offset), priv->base + GPIO_OES);
+
 	return 0;
 }
 
diff --git a/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c b/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c
index 1ad8bfbd88..92513822e7 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c
@@ -1552,12 +1552,12 @@ static int npcm7xx_pinconf_set(struct udevice *dev, unsigned int pin,
 		setbits_le32(base + NPCM7XX_GP_N_OES, BIT(gpio));
 	case PIN_CONFIG_OUTPUT:
 		dev_dbg(dev, "set pin %d output %d\n", pin, arg);
-		clrbits_le32(base + NPCM7XX_GP_N_IEM, BIT(gpio));
-		setbits_le32(base + NPCM7XX_GP_N_OES, BIT(gpio));
 		if (arg)
 			setbits_le32(base + NPCM7XX_GP_N_DOUT, BIT(gpio));
 		else
 			clrbits_le32(base + NPCM7XX_GP_N_DOUT, BIT(gpio));
+		clrbits_le32(base + NPCM7XX_GP_N_IEM, BIT(gpio));
+		setbits_le32(base + NPCM7XX_GP_N_OES, BIT(gpio));
 		break;
 	case PIN_CONFIG_DRIVE_PUSH_PULL:
 		dev_dbg(dev, "set pin %d push pull\n", pin);
diff --git a/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c b/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c
index 0ec47e9577..f18be08518 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c
@@ -900,12 +900,12 @@ static int npcm8xx_pinconf_set(struct udevice *dev, unsigned int selector,
 		setbits_le32(base + GPIO_OES, BIT(gpio));
 	case PIN_CONFIG_OUTPUT:
 		dev_dbg(dev, "set pin %d output %d\n", pin, arg);
-		clrbits_le32(base + GPIO_IEM, BIT(gpio));
-		setbits_le32(base + GPIO_OES, BIT(gpio));
 		if (arg)
 			setbits_le32(base + GPIO_DOUT, BIT(gpio));
 		else
 			clrbits_le32(base + GPIO_DOUT, BIT(gpio));
+		clrbits_le32(base + GPIO_IEM, BIT(gpio));
+		setbits_le32(base + GPIO_OES, BIT(gpio));
 		break;
 	case PIN_CONFIG_DRIVE_PUSH_PULL:
 		dev_dbg(dev, "set pin %d push pull\n", pin);
-- 
2.34.1