Re: [PATCH 3/5] arm64: dts: qcom: sc7180: Add quackingstick dts files

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Hi,

On Tue, May 3, 2022 at 8:55 AM Krzysztof Kozlowski
<krzysztof.kozlowski@xxxxxxxxxx> wrote:
>
> On 03/05/2022 17:34, Doug Anderson wrote:
> > Hi,
> >
> > On Tue, May 3, 2022 at 8:31 AM Krzysztof Kozlowski
> > <krzysztof.kozlowski@xxxxxxxxxx> wrote:
> >>
> >> On 30/04/2022 10:15, Joseph S. Barrera III wrote:
> >>> Quackingstick is a trogdor-based board. These dts files are copies from
> >>> the downstream Chrome OS 5.4 kernel, but with downstream bits removed.
> >>>
> >>> Signed-off-by: Joseph S. Barrera III <joebar@xxxxxxxxxxxx>
> >>
> >> (...)
> >>
> >>> +/*
> >>> + * Google Quackingstick board device tree source
> >>> + *
> >>> + * Copyright 2021 Google LLC.
> >>> + *
> >>> + * SKU: 0x601 => 1537
> >>> + *  - bits 11..8: Panel ID: 0x6 (AUO)
> >>> + */
> >>> +
> >>> +#include "sc7180-trogdor-quackingstick.dtsi"
> >>> +
> >>> +/ {
> >>> +     model = "Google Quackingstick (rev0+)";
> >>> +     compatible = "google,quackingstick-sku1537", "qcom,sc7180";
> >>
> >> Here and in other patches you keep adding undocumented board compatibles.
> >
> > Sure, but perhaps we could continue the conversation at:
> >
> > https://lore.kernel.org/r/CAD=FV=W_SA-3PfDFi-Gkjk9pew5bchFNjQhXX8MkZyuy5UohEQ@xxxxxxxxxxxxxx/
> >
> > ...to avoid forking it and losing all the context.
>
> It's not that close to that discussion because none of compatibles here
> are documented and we discussed about documenting specific revisions.

It is strongly related, though, since we later might need to add
revision info to these boards. These are still Chrome OS devices and
they still have a bootloader looking at revision strappings. In this
case, though, all the changes between revisions (so far) have been
invisible to software.

-Doug



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