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Date: Fri, 11 Nov 2022 12:52:25 +0100
From: Michael Riesch <michael.riesch@...fvision.net>
To: Anand Moon <linux.amoon@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Heiko Stuebner <heiko@...ech.de>
Cc: Chukun Pan <amadeus@....edu.cn>, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [linux-next-v1 1/3] arm64: dts: rockchip: Fix gmac phy mode to
rgmii on Rock 3A sbc
Hi Anand,
On 11/11/22 10:42, Anand Moon wrote:
> On rk356x ethernet phy support reduced media independent interface (RMII)
> and reduced gigabit media independent interface (RGMII).
> So set the phy mode to rgmii.
>
> Signed-off-by: Anand Moon <linux.amoon@...il.com>
> ---
> arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
> index ea74ba32fbbd..72e410e3aca8 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
> @@ -253,7 +253,7 @@ &gmac1 {
> assigned-clock-rates = <0>, <125000000>;
> clock_in_out = "output";
> phy-handle = <&rgmii_phy1>;
> - phy-mode = "rgmii-id";
> + phy-mode = "rgmii";
What are you trying to fix here? If it ain't broken, don't fix it. I
would assume if you switch from rgmii-id to rgmii you need to adjust the
rx/tx-delays, otherwise this change does not make sense to me. Feel free
to point out what I am missing, though.
Best regards,
Michael
> pinctrl-names = "default";
> pinctrl-0 = <&gmac1m1_miim
> &gmac1m1_tx_bus2
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