linux-kernel - Re: [PATCH] riscv: dts: allwinner: d1: Specify default CAN pins

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Message-ID: <3248110.44csPzL39Z@jernej-laptop>
Date:   Thu, 03 Aug 2023 22:59:30 +0200
From:   Jernej Škrabec <jernej.skrabec@...il.com>
To:     linux-sunxi@...ts.linux.dev, John Watts <contact@...kia.org>
Cc:     John Watts <contact@...kia.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Chen-Yu Tsai <wens@...e.org>,
        Samuel Holland <samuel@...lland.org>,
        Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
        Maksim Kiselev <bigunclemax@...il.com>,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        mkl@...gutronix.de
Subject: Re: [PATCH] riscv: dts: allwinner: d1: Specify default CAN pins

/cc Marc

Dne ponedeljek, 31. julij 2023 ob 04:36:59 CEST je John Watts napisal(a):
> There are only one set of CAN pins available on these chips.
> Specify these as the default to avoid redundancy in board device trees.
> 
> Signed-off-by: John Watts <contact@...kia.org>
> ---
>  arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
> b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi index
> 4086c0cc0f9d..b27c3fc13b0d 100644
> --- a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
> +++ b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
> @@ -898,6 +898,8 @@ can0: can@...4000 {
>  			interrupts = <SOC_PERIPHERAL_IRQ(21) 
IRQ_TYPE_LEVEL_HIGH>;
>  			clocks = <&ccu CLK_BUS_CAN0>;
>  			resets = <&ccu RST_BUS_CAN0>;
> +			pinctrl-names = "default";
> +			pinctrl-0 = <&can0_pins>;
>  			status = "disabled";
>  		};

pinctrl-names and pinctrl-0 are usually at the top. However, since there is no 
hard rule (I've seen it mixed), I'm fine with it.

Acked-by: Jernej Skrabec <jernej.skrabec@...il.com>

Since original DT node entry goes through netdev tree, this should be picked 
there or it can be dropped there and I pick both patches or I can pick patch 
for later kernel version.

Best regards,
Jernej

> 
> @@ -907,6 +909,8 @@ can1: can@...4400 {
>  			interrupts = <SOC_PERIPHERAL_IRQ(22) 
IRQ_TYPE_LEVEL_HIGH>;
>  			clocks = <&ccu CLK_BUS_CAN1>;
>  			resets = <&ccu RST_BUS_CAN1>;
> +			pinctrl-names = "default";
> +			pinctrl-0 = <&can1_pins>;
>  			status = "disabled";
>  		};
>  	};