linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7180-trogdor: Keep pm6150

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Message-ID: <YwzopMkUBfLfFtc8@google.com>
Date:   Mon, 29 Aug 2022 09:26:12 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sc7180-trogdor: Keep pm6150_adc
 enabled for TZ

On Fri, Aug 26, 2022 at 05:49:00PM -0700, Stephen Boyd wrote:
> There's still a thermal zone using pm6150_adc in the pm6150.dtsi file,
> pm6150_thermal. It's not super obvious because it indirectly uses the
> adc through an iio channel in pm6150_temp. Let's keep this enabled on
> lazor and coachz so that reading the temperature of the pm6150_thermal
> zone continues to work. Otherwise we get -EINVAL when reading the zone,
> and I suspect the PMIC temperature trip doesn't work properly so we
> don't shutdown when the PMIC overheats.
> 
> Cc: Matthias Kaehlcke <mka@...omium.org>
> Fixes: b8d1e3d33487 ("arm64: dts: qcom: sc7180-trogdor: Delete ADC config for unused thermistors")
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>

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