linux-kernel - Re: [PATCH 2/2] arm64: dts: add board AN400

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Message-ID: <112727a2-29c5-1402-deb7-f35119b4338e@linaro.org>
Date:   Tue, 4 Jul 2023 10:09:41 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Xianwei Zhao <xianwei.zhao@...ogic.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Kevin Hilman <khilman@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH 2/2] arm64: dts: add board AN400

Hi,

On 04/07/2023 05:16, Xianwei Zhao wrote:
> Add devicetree support for Amlogic AN400  board based T7 SoC.
> 
> Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
> ---
>   arch/arm64/boot/dts/amlogic/Makefile          |  1 +
>   .../dts/amlogic/amlogic-t7-a311d2-an400.dts   | 39 +++++++++++++++++++
>   2 files changed, 40 insertions(+)
>   create mode 100644 arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dts
> 
> diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
> index 91fa425116ea..8b6f57a94863 100644
> --- a/arch/arm64/boot/dts/amlogic/Makefile
> +++ b/arch/arm64/boot/dts/amlogic/Makefile
> @@ -1,5 +1,6 @@
>   # SPDX-License-Identifier: GPL-2.0
>   dtb-$(CONFIG_ARCH_MESON) += amlogic-c3-c302x-aw409.dtb
> +dtb-$(CONFIG_ARCH_MESON) += amlogic-t7-a311d2-an400.dtb
>   dtb-$(CONFIG_ARCH_MESON) += amlogic-t7-a311d2-khadas-vim4.dtb
>   dtb-$(CONFIG_ARCH_MESON) += meson-a1-ad401.dtb
>   dtb-$(CONFIG_ARCH_MESON) += meson-axg-jethome-jethub-j100.dtb
> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dts b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dts
> new file mode 100644
> index 000000000000..d755e1ee108a
> --- /dev/null
> +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dts
> @@ -0,0 +1,39 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright (c) 2023 Amlogic, Inc. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include "amlogic-t7.dtsi"
> +
> +/ {
> +	model = "Amlogic A311D2 AN400 Development Board";
> +	compatible = "amlogic,an400", "amlogic,a311d2", "amlogic,t7";
> +	interrupt-parent = <&gic>;
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +
> +	aliases {
> +		serial0 = &uart_a;
> +	};
> +
> +	memory@0 {
> +		device_type = "memory";
> +		linux,usable-memory = <0x00000000 0x00000000 0x00000000 0xE0000000
> +					0x00000001 0x00000000 0x00000000 0x20000000>;

Please use "reg =" instead of linux,usable-memory, which is not a documented property

Please use `make CHECK_DTBS=yes amlogic/amlogic-t7-a311d2-an400.dtb` before posting DT patches,
and make sure there's no errors except already in-review bindings like here the UART compatible.

The result here is:
arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dtb: /: memory@0: 'anyOf' conditional failed, one must be fixed:
         'reg' is a required property
         'ranges' is a required property
         From schema: /usr/local/lib/python3.10/dist-packages/dtschema/schemas/root-node.yaml
arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dtb: /: memory@0: 'linux,usable-memory' does not match any of the regexes: 'pinctrl-[0-9]+'
         From schema: /usr/local/lib/python3.10/dist-packages/dtschema/schemas/memory.yaml
arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dtb: /: memory@0: 'reg' is a required property
         From schema: /usr/local/lib/python3.10/dist-packages/dtschema/schemas/memory.yaml

Please fix this one.

arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dtb: serial@...00: compatible: 'oneOf' conditional failed, one must be fixed:
         ['amlogic,t7-uart', 'amlogic,meson-s4-uart'] is too short
         ['amlogic,t7-uart', 'amlogic,meson-s4-uart'] is too long
         'amlogic,t7-uart' is not one of ['amlogic,meson6-uart', 'amlogic,meson8-uart', 'amlogic,meson8b-uart', 'amlogic,meson-gx-uart', 'amlogic,meson-s4-uart']
         'amlogic,meson-g12a-uart' was expected
         'amlogic,meson-ao-uart' was expected
         'amlogic,meson-gx-uart' was expected
         From schema: Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dtb: serial@...00: Unevaluated properties are not allowed ('compatible' was unexpected)
         From schema: Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dtb: /soc/bus@...00000/serial@...00: failed to match any schema with compatible: ['amlogic,t7-uart', 'amlogic,meson-s4-uart']

This one is OK, the UART bindings is reviewed and should be picked up for v6.6

Neil

> +	};
> +
> +	xtal: xtal-clk {
> +		compatible = "fixed-clock";
> +		clock-frequency = <24000000>;
> +		clock-output-names = "xtal";
> +		#clock-cells = <0>;
> +	};
> +};
> +
> +&uart_a {
> +	clocks = <&xtal>, <&xtal>, <&xtal>;
> +	clock-names = "xtal", "pclk", "baud";
> +	status = "okay";
> +};