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

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Date:   Thu, 6 Jul 2023 16:44:45 +0800
From:   Xianwei Zhao <xianwei.zhao@...ogic.com>
To:     neil.armstrong@...aro.org, 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 Neil,
      Thanks.

On 2023/7/4 16:09, Neil Armstrong wrote:
> [ EXTERNAL EMAIL ]
> 
> 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.
>
Will do
> 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";
>> +};
>