[PATCH] ARM: dts: stm32: Fix PHY post-reset delay on Avenger96

[Alexandre TORGUE]

On 3/25/22 18:58, Marek Vasut wrote:
> Per KSZ9031RNX PHY datasheet FIGURE 7-5: POWER-UP/POWER-DOWN/RESET TIMING
> Note 2: After the de-assertion of reset, wait a minimum of 100 μs before
> starting programming on the MIIM (MDC/MDIO) interface.
> 
> Add 1ms post-reset delay to guarantee this figure.
> 
> Fixes: 010ca9fe500bf ("ARM: dts: stm32: Add missing ethernet PHY reset on AV96")
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Alexandre Torgue <alexandre.torgue at foss.st.com>
> Cc: Patrice Chotard <patrice.chotard at foss.st.com>
> Cc: Patrick Delaunay <patrick.delaunay at foss.st.com>
> Cc: linux-stm32 at st-md-mailman.stormreply.com
> To: linux-arm-kernel at lists.infradead.org
> ---
>   arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi
> index 61e17f44ce815..76c54b006d871 100644
> --- a/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi
> +++ b/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi
> @@ -141,6 +141,7 @@ mdio0 {
>   		compatible = "snps,dwmac-mdio";
>   		reset-gpios = <&gpioz 2 GPIO_ACTIVE_LOW>;
>   		reset-delay-us = <1000>;
> +		reset-post-delay-us = <1000>;
>   
>   		phy0: ethernet-phy at 7 {
>   			reg = <7>;
Applied on stm32-next.

Thanks.
Alex