linux-kernel - Re: [PATCH] arm64: allwinner: a64: add device tree for SoPine with clusterboard

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Message-ID: <334c5f69-2f25-aeb1-b87f-500cf2a6c205@linaro.org>
Date:   Mon, 7 Nov 2022 09:29:25 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     renze@...lus.nl, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>
Subject: Re: [PATCH] arm64: allwinner: a64: add device tree for SoPine with
 clusterboard

On 06/11/2022 22:40, renze@...lus.nl wrote:
> The Pine64 clusterboard needs a to have the tx delay changed to
> 500ps for ethernet to work. This solution was described by multiple
> people on the Pine64 forum years ago and nobody has submitted it.
> 
> Add a device tree for SoPine with the clusterboard.
> 
> Signed-off-by: Renze Nicolai <renze@...lus.nl>
> ---
>   arch/arm64/boot/dts/allwinner/Makefile                 |  1 +
>   .../dts/allwinner/sun50i-a64-sopine-clusterboard.dts   | 10 ++++++++++
>   2 files changed, 11 insertions(+)
>   create mode 100644 
> arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-clusterboard.dts
> 
> diff --git a/arch/arm64/boot/dts/allwinner/Makefile 
> b/arch/arm64/boot/dts/allwinner/Makefile
> index 6a96494a2e0a..15b011d1aaea 100644
> --- a/arch/arm64/boot/dts/allwinner/Makefile
> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> @@ -15,6 +15,7 @@ dtb-$(CONFIG_ARCH_SUNXI) += 
> sun50i-a64-pinephone-1.2.dtb
>   dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pinetab.dtb
>   dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pinetab-early-adopter.dtb
>   dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-sopine-baseboard.dtb
> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-sopine-clusterboard.dtb

This does not look like matching indentation of other entries...

>   dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-teres-i.dtb
>   dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a100-allwinner-perf1.dtb
>   dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-bananapi-m2-plus.dtb
> diff --git 
> a/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-clusterboard.dts 
> b/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-clusterboard.dts
> new file mode 100644
> index 000000000000..6f8020a22670
> --- /dev/null
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-clusterboard.dts
> @@ -0,0 +1,10 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +// Copyright (c) 2022 Renze Nicolai <renze@...lus.nl>
> +
> +/dts-v1/;
> +
> +#include "sun50i-a64-sopine-baseboard.dts"

You miss compatible and model. You need to document the compatible in
bindings (just like other top-level).

> +
> +&emac {
> +       allwinner,tx-delay-ps = <500>;
> +};

Best regards,
Krzysztof