[PATCH] net: stmmac: fix the mistake of the device tree property string of reset gpio in stmmac_mdio_reset

[PATCH] net: stmmac: fix the mistake of the device tree property string of reset gpio in stmmac_mdio_reset

[Zhouyi Zhou]

From: "zhili.liu" <zhili.liu@ucas.com.cn>

According to Documentation/devicetree/bindings/net/snps,dwmac.yaml,
the device tree property of PHY Reset GPIO should be "snps,reset-gpio".

Use string "snps,reset-gpio" instead of "snps,reset" in stmmac_mdio_reset
when invoking devm_gpiod_get_optional.

Fixes: 7c86f20d15b7 ("net: stmmac: use GPIO descriptors in stmmac_mdio_reset")

Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com>
Signed-off-by: wangzhiqiang <zhiqiangwang@ucas.com.cn>
Signed-off-by: zhili.liu <zhili.liu@ucas.com.cn>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 03f90676b3ad..b052222458b5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -462,7 +462,7 @@ int stmmac_mdio_reset(struct mii_bus *bus)
 		u32 delays[3] = { 0, 0, 0 };
 
 		reset_gpio = devm_gpiod_get_optional(priv->device,
-						     "snps,reset",
+						     "snps,reset-gpio",
 						     GPIOD_OUT_LOW);
 		if (IS_ERR(reset_gpio))
 			return PTR_ERR(reset_gpio);
-- 
2.25.1

Re: [PATCH] net: stmmac: fix the mistake of the device tree property string of reset gpio in stmmac_mdio_reset

[Andrew Lunn]

On Sat, Jul 20, 2024 at 04:00:27AM +0000, Zhouyi Zhou wrote:
> From: "zhili.liu" <zhili.liu@ucas.com.cn>
> 
> According to Documentation/devicetree/bindings/net/snps,dwmac.yaml,
> the device tree property of PHY Reset GPIO should be "snps,reset-gpio".
> 
> Use string "snps,reset-gpio" instead of "snps,reset" in stmmac_mdio_reset
> when invoking devm_gpiod_get_optional.

Have you found the current code does not work on a board you have, or
is this by code inspection?

https://elixir.bootlin.com/linux/v6.10/source/drivers/gpio/gpiolib-of.c#L687
https://elixir.bootlin.com/linux/v6.10/source/drivers/gpio/gpiolib.h#L93

See how it appends -gpio and -gpios to the name.

I also randomly check a few users of devm_gpiod_get_optional() and non
of them include the -gpio in the name, leaving the GPIO core to do it.

	Andrew

Re: [PATCH] net: stmmac: fix the mistake of the device tree property string of reset gpio in stmmac_mdio_reset

[Paolo Abeni]

On 7/20/24 06:00, Zhouyi Zhou wrote:
> From: "zhili.liu" <zhili.liu@ucas.com.cn>
> 
> According to Documentation/devicetree/bindings/net/snps,dwmac.yaml,
> the device tree property of PHY Reset GPIO should be "snps,reset-gpio".
> 
> Use string "snps,reset-gpio" instead of "snps,reset" in stmmac_mdio_reset
> when invoking devm_gpiod_get_optional.
> 
> Fixes: 7c86f20d15b7 ("net: stmmac: use GPIO descriptors in stmmac_mdio_reset")
> 
> Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com>
> Signed-off-by: wangzhiqiang <zhiqiangwang@ucas.com.cn>
> Signed-off-by: zhili.liu <zhili.liu@ucas.com.cn>

Apart from the more relevant concern raised from Andrew, please note 
that you should avoid empty lines in the tag area, between the 'fixes' 
tag and the SoB tag.

Thanks,

Paolo