Re: [PATCH] arm64: dts: rockchip: qnap-ts433: Simplify network PHY connection

["Heiko Stübner" <heiko@sntech.de>]

Hi Uwe,

Am Montag, 4. März 2024, 09:46:11 CET schrieb Uwe Kleine-König:
> While it requires to have the right phy driver loaded (i.e. motorcomm)
> to make the phy asserting the right delays, this is generally the
> preferred way to define the MAC <-> PHY connection.
> 
> Signed-off-by: Uwe Kleine-König <ukleinek@debian.org>
> ---
> Hello,
> 
> Andrew already pointed out when I posted the patch introducing the gmac0 node
> that rgmii-id would be the preferred way to setup things. Back then this didn't
> happen because this change broke reception of network packets. However this
> only happend because I didn't have the right phy driver loaded.

trying to understand how the (not) loaded module fits into this :-)
The mdio-bus is supposed to probe the phy and load the appropriate module.

From your description it sounds like the correct phy module needs to be
actually loaded? Or was that meant to be a "requires to have the right phy
driver compiled" instead?


Heiko



> Best regards
> Uwe
> 
>  arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts b/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts
> index 6a998166003c..36ad48d46bc1 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts
> @@ -20,15 +20,13 @@ &gmac0 {
>  	assigned-clock-rates = <0>, <125000000>;
>  	clock_in_out = "output";
>  	phy-handle = <&rgmii_phy0>;
> -	phy-mode = "rgmii";
> +	phy-mode = "rgmii-id";
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&gmac0_miim
>  		     &gmac0_tx_bus2
>  		     &gmac0_rx_bus2
>  		     &gmac0_rgmii_clk
>  		     &gmac0_rgmii_bus>;
> -	rx_delay = <0x2f>;
> -	tx_delay = <0x3c>;
>  	status = "okay";
>  };
>  
> 
> base-commit: 67908bf6954b7635d33760ff6dfc189fc26ccc89
> 





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