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Message-ID: <CAD=FV=WVVjj1Su2Ta9wQebDEWXs=9dNs9EO9EvTH=EjT4Fr8jg@mail.gmail.com>
Date:   Thu, 5 Nov 2020 16:55:40 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] arm64: dts: qcom: sc7180: Add sc7180-lazor-r2

Hi,

On Thu, Nov 5, 2020 at 4:37 PM Matthias Kaehlcke <mka@...omium.org> wrote:
>
> One important delta with respect to rev1 is a switch of the power
> supply for the onboard USB hub from 'pp3300_l7c' to 'pp3300_a' + a
> load switch. The actual regulator switch is done by the patch 'arm64:
> dts: qcom: sc7180-trogdor: Make pp3300_a the default supply for
> pp3300_hub', since it affects the entire trogdor platform. Here we
> only add the .dts files for lazor rev2 and replace the generic
> compatible entries in the rev1 .dts files.
>
> Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
> ---
>
> Changes in v2:
> - patch added to the series
>
>  arch/arm64/boot/dts/qcom/Makefile              |  3 +++
>  .../dts/qcom/sc7180-trogdor-lazor-r1-kb.dts    |  4 ++--
>  .../dts/qcom/sc7180-trogdor-lazor-r1-lte.dts   |  4 ++--
>  .../boot/dts/qcom/sc7180-trogdor-lazor-r1.dts  |  4 ++--
>  .../dts/qcom/sc7180-trogdor-lazor-r2-kb.dts    | 17 +++++++++++++++++
>  .../dts/qcom/sc7180-trogdor-lazor-r2-lte.dts   | 18 ++++++++++++++++++
>  .../boot/dts/qcom/sc7180-trogdor-lazor-r2.dts  | 15 +++++++++++++++
>  7 files changed, 59 insertions(+), 6 deletions(-)

So it's pretty unlikely that this change actually happened in "-rev2".
"-rev2" was a _very_ small batch of boards that I don't think made it
into too many people's hands.  You probably want "-rev3".


> diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor-r2-kb.dts b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor-r2-kb.dts
> new file mode 100644
> index 000000000000..7c3a702ef209
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor-r2-kb.dts
> @@ -0,0 +1,17 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Google Lazor board device tree source
> + *
> + * Copyright 2020 Google LLC.
> + */
> +
> +#include "sc7180-trogdor-lazor-r1.dts"

Should have been updated to not point to '-r1', no?

===

If you want to compare, you can also look at my (abandoned) CL:
https://crrev.com/c/2481550

...that forked out a "-rev3" to tag the WiFi slightly differently, but
we ended up abandoning it because we found a better way to handle the
WiFi stuff.

-Doug

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