linux-kernel - Re: [PATCH] soc: qcom: pmic_glink: disable UCSI on sc8280xp

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Message-ID: <ZXczWLyZHhxnraZh@hovoldconsulting.com>
Date:   Mon, 11 Dec 2023 17:05:44 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Johan Hovold <johan+linaro@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] soc: qcom: pmic_glink: disable UCSI on sc8280xp

On Fri, Dec 08, 2023 at 06:34:00PM +0200, Dmitry Baryshkov wrote:
> On Fri, 8 Dec 2023 at 14:56, Johan Hovold <johan+linaro@...nel.org> wrote:
> >
> > Enabling UCSI on sc8280xp and the Lenovo ThinkPad X13s in particular
> > results in a number of errors and timeouts during boot:
> >
> > [    9.012421] ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: GET_CONNECTOR_STATUS failed (-95)
> > [   14.047379] ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: timeout waiting for UCSI sync write response
> > [   14.050708] ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: GET_CONNECTOR_STATUS failed (-110)
> > [   20.192382] ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: timeout waiting for UCSI sync write response
> > [   20.192542] ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: GET_CONNECTOR_STATUS failed (-110)
> >
> > Disable UCSI on sc8280xp until this has been resolved.

> Johan, if you can capture message traces in
> pmic_glink_ucsi_locked_write() / pmic_glink_ucsi_read() /
> pmic_glink_ucsi_callback(), this would help me understand what is
> causing the issue.

I don't have time to dig into this at the moment, and its probably
easiest for everyone if you just try this on your own X13s.

Johan