[PATCH] ARM: dts: stm32: Add custom PHY reset bindings on AV96

[Patrick DELAUNAY]

Hi Marek,

On 11/13/21 3:27 AM, Marek Vasut wrote:
> The ethernet PHY must be reset on AV96, however DWMAC currently does
> not support the MDIO-bus PHY GPIO reset bindings and the ethernet MAC
> PHY reset property is going away on next DT sync. Add PHY specific
> reset bindings to trigger the PHY reset and fix sporadic ethernet
> malfunctions, until the next DT sync.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Patrice Chotard <patrice.chotard at foss.st.com>
> Cc: Patrick Delaunay <patrick.delaunay at foss.st.com>
> ---
>   arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi | 11 +++++++++++
>   1 file changed, 11 insertions(+)
>
> diff --git a/arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi
> index 8b275e4950e..4b1dbf08387 100644
> --- a/arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi
> +++ b/arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi
> @@ -19,6 +19,17 @@
>   	};
>   };
>   
> +
> +&ethernet0 {
> +	mdio0 {
> +		ethernet-phy at 7 {
> +			reset-gpios = <&gpioz 2 GPIO_ACTIVE_LOW>;
> +			reset-assert-us = <11000>;
> +			reset-deassert-us = <1000>;
> +		};
> +	};
> +};
> +
>   &sdmmc1 {
>   	u-boot,dm-spl;
>   };


Reviewed-by: Patrick Delaunay <patrick.delaunay at foss.st.com>

Thanks
Patrick