linux-kernel - Re: [PATCH] arm64: dts: allwinner: beelink-gs1: Enable both RGMII RX/TX delay

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Message-ID: <CAJiuCce+VHusdYPv7QutYvCcCByz=nRcBotPNL6E=jA4U4=YoA@mail.gmail.com>
Date:   Sun, 18 Oct 2020 19:57:19 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     Maxime Ripard <mripard@...nel.org>
Cc:     Rob Herring <robh+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: allwinner: beelink-gs1: Enable both RGMII
 RX/TX delay

Hi,

On Sun, 18 Oct 2020 at 19:24, Clément Péron <peron.clem@...il.com> wrote:
>
> Before the commit:
> net: phy: realtek: fix rtl8211e rx/tx delay config
bbc4d71d6354 ("net: phy: realtek: fix rtl8211e rx/tx delay config")

With the hash for reference it's better :)
Clement

>
> The software overwrite for RX/TX delays of the RTL8211e were not
> working properly and the Beelink GS1 had both RX/TX delay of RGMII
> interface set using pull-up on the TXDLY and RXDLY pins.
>
> Now that these delays are working properly they overwrite the HW
> config and set this to 'rgmii' meaning no delay on both RX/TX.
> This makes the ethernet of this board not working anymore.
>
> Set the phy-mode to 'rgmii-id' meaning RGMII with RX/TX delays
> in the device-tree to keep the correct configuration.
>
> Fixes: 089bee8dd119 ("arm64: dts: allwinner: h6: Introduce Beelink GS1 board")
> Signed-off-by: Clément Péron <peron.clem@...il.com>
> ---
>  arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts
> index a364cb4e5b3f..6ab53860e447 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts
> @@ -99,7 +99,7 @@ &ehci0 {
>  &emac {
>         pinctrl-names = "default";
>         pinctrl-0 = <&ext_rgmii_pins>;
> -       phy-mode = "rgmii";
> +       phy-mode = "rgmii-id";
>         phy-handle = <&ext_rgmii_phy>;
>         phy-supply = <&reg_aldo2>;
>         status = "okay";
> --
> 2.25.1
>