linux-kernel - Re: [PATCH] arm64: dts: sdm845-mtp: Reserve reserved gpios

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Message-ID: <CACRpkdaynN0hfHukkxd55VZj4a4qZY-GrTjVDjv8_N3dJ679-g@mail.gmail.com>
Date:   Sun, 4 Nov 2018 16:56:48 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-msm@...r.kernel.org,
        "open list:ARM/QUALCOMM SUPPORT" <linux-soc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Stephen Boyd <sboyd@...eaurora.org>
Subject: Re: [PATCH] arm64: dts: sdm845-mtp: Reserve reserved gpios

On Fri, Nov 2, 2018 at 10:42 PM Bjorn Andersson
<bjorn.andersson@...aro.org> wrote:

> With the introduction of commit 3edfb7bd76bd ("gpiolib: Show correct
> direction from the beginning") the gpiolib will attempt to read the
> direction of all pins, which triggers a read from protected register
> regions.
>
> The pins 0 through 3 and 81 through 84 are protected, so mark these as
> reserved.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Thanks for fixing this up so elegantly.

Yours,
Linus Walleij