Re: [PATCH] arm64: dts: renesas: Apply overlays to base dtbs

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Hi Rob,

On Mon, Sep 11, 2023 at 11:47 PM Rob Herring <robh@xxxxxxxxxx> wrote:
> DT overlays in tree need to be applied to a base DTB to validate they
> apply, to run schema checks on them, and to catch any errors at compile
> time.
>
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>

Thanks for your patch!

> Looks like some of these apply to multiple base DTs. I've only added them
> to 1 base.

Indeed:
  - draak-ebisu-panel-aa104xd12.dtbo applies to r8a77990-ebisu.dtb, too,
  - salvator-panel-aa104xd12.dtbo applies to all salvator-x(s) variants.

So should they be added to all bases they apply to?

Or, if you intend none of the composite DTBs to be consumed as-is, but
only intend them to be created for validation, perhaps the additional
rules should be grouped together at the bottom of the Makefile?

> --- a/arch/arm64/boot/dts/renesas/Makefile
> +++ b/arch/arm64/boot/dts/renesas/Makefile
> @@ -64,6 +65,8 @@ dtb-$(CONFIG_ARCH_R8A779F0) += r8a779f0-spider.dtb
>
>  dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g0-white-hawk.dtb
>  dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g0-white-hawk-ard-audio-da7212.dtbo

Do you still need the individual *.dtbo rules? Perhaps you are
afraid that make will auto-delete them as they are only used as
intermediaries?

> +r8a779g0-white-hawk-ard-audio-da7212-dtbs := r8a779g0-white-hawk.dtb r8a779g0-white-hawk-ard-audio-da7212.dtbo
> +dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g0-white-hawk-ard-audio-da7212.dtb


Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds



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