linux-kernel - Re: [PATCH 2/2] arm64: dts: meson: add support for BananaPi M2S variants

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Date:   Sun, 5 Mar 2023 18:31:10 +0400
From:   Christian Hewitt <christianshewitt@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Linux Amlogic <linux-amlogic@...ts.infradead.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] arm64: dts: meson: add support for BananaPi M2S
 variants


> On 5 Mar 2023, at 6:15 pm, Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
> 
> On 05/03/2023 14:47, Christian Hewitt wrote:
>> 
>>> On 5 Mar 2023, at 5:30 pm, Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
>>> 
>>> On 05/03/2023 14:20, Christian Hewitt wrote:
>>>> BananaPi M2S ships in Amlogic S922X and A311D variants with the
>>>> following common specifications:
>>>> 
>>> (...)
>>> 
>>>> +
>>>> +	leds {
>>>> +		compatible = "gpio-leds";
>>>> +
>>>> +		blue {
>>> 
>>> led-0
>>> 
>>> Does not look like you tested the DTS against bindings. Please run `make
>>> dtbs_check` (see Documentation/devicetree/bindings/writing-schema.rst
>>> for instructions).
>> 
>> I’m building everything in a cross-compile build system that doesn’t allow
>> this to be done without a problem amount of hoop jumping. I need to work on
>> another arrangement to do this testing (work-in-progress). Thanks for the
> 
> Cross compiling kernel and running this (also as cross compiled) is
> trivial, so what exactly stops you? Packaging kernel for your system
> (e.g. Yocto) is different topic, but that's final step, not necessary
> for development of DTS.

I’m reasonably competent within the constraints of the distro build-system
environment that I use and know. I’m very lacking in knowledge if you step
outside that. It’s mostly an old-dog/new-trick problem, and something I do
need to improve upon (not a good excuse, I know).

Christian