[PATCH] arm64: dts: renesas: cat875: Add rx/tx delays

[PATCH] arm64: dts: renesas: cat875: Add rx/tx delays

[Biju Das]

The CAT875 sub board from Silicon Linux uses Realtek PHY.

The phy driver commit bbc4d71d63549bcd003
("net: phy: realtek: fix rtl8211e rx/tx delay config") introduced
NFS mount failure. Now it needs both rx/tx delays for the NFS mount to
work.

This patch fixes the NFS mount failure issue by adding "rgmii-id" mode
on the avb device node.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Fixes: bbc4d71d63549bcd ("net: phy: realtek: fix rtl8211e rx/tx delay config")
---
 arch/arm64/boot/dts/renesas/cat875.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/renesas/cat875.dtsi b/arch/arm64/boot/dts/renesas/cat875.dtsi
index a69d24e9c61d..8c9da8b4bd60 100644
--- a/arch/arm64/boot/dts/renesas/cat875.dtsi
+++ b/arch/arm64/boot/dts/renesas/cat875.dtsi
@@ -18,6 +18,7 @@
 	pinctrl-names = "default";
 	renesas,no-ether-link;
 	phy-handle = <&phy0>;
+	phy-mode = "rgmii-id";
 	status = "okay";
 
 	phy0: ethernet-phy@0 {
-- 
2.17.1

Re: [PATCH] arm64: dts: renesas: cat875: Add rx/tx delays

[Geert Uytterhoeven]

On Mon, Nov 15, 2021 at 3:28 PM Biju Das <biju.das.jz@bp.renesas.com> wrote:
> The CAT875 sub board from Silicon Linux uses Realtek PHY.
>
> The phy driver commit bbc4d71d63549bcd003
> ("net: phy: realtek: fix rtl8211e rx/tx delay config") introduced
> NFS mount failure. Now it needs both rx/tx delays for the NFS mount to
> work.
>
> This patch fixes the NFS mount failure issue by adding "rgmii-id" mode
> on the avb device node.
>
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> Fixes: bbc4d71d63549bcd ("net: phy: realtek: fix rtl8211e rx/tx delay config")

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v5.17.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds