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

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Message-ID: <CAE-0n51tqh7XP8SrqTY_EfsmqWnh2dVHuTTcRJt1BRR27bAL+Q@mail.gmail.com>
Date:   Tue, 11 Jan 2022 16:29:22 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Douglas Anderson <dianders@...omium.org>,
        Linus Walleij <linus.walleij@...aro.org>
Cc:     Matthias Kaehlcke <mka@...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

Quoting Douglas Anderson (2022-01-11 14:05:21)
> 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: Stephen Boyd <swboyd@...omium.org>