linux-kernel - Re: [PATCH] dt-bindings: pinctrl: drive-strength doesn't default to 2 if unspecified

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Message-ID: <Yd8DR8fEbCJNasiw@google.com>
Date:   Wed, 12 Jan 2022 08:35:19 -0800
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Stephen Boyd <swboyd@...omium.org>,
        linux-arm-msm@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: pinctrl: drive-strength doesn't default to
 2 if unspecified

On Tue, Jan 11, 2022 at 02:05:21PM -0800, Douglas Anderson wrote:
> If the drive-strength isn't specified in the device tree then it
> doesn't actually default to 2. Instead, it defaults to whatever the
> heck the BIOS left it at. If the BIOS doesn't touch it then that means
> it's whatever the heck the initial state of the pin was when the SoC
> booted.
> 
> Reported-by: Matthias Kaehlcke <mka@...omium.org>
> Signed-off-by: Douglas Anderson <dianders@...omium.org>

Reviewed-by: Matthias Kaehlcke <mka@...omium.org>