linux-kernel - Re: [PATCH v2 7/9] clk: qcom: gdsc: Implement NO_RET

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Message-ID: <161307485928.1254594.5555629819123034872@swboyd.mtv.corp.google.com>
Date:   Thu, 11 Feb 2021 12:20:59 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>, agross@...nel.org
Cc:     bjorn.andersson@...aro.org, mturquette@...libre.com,
        robh+dt@...nel.org, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org,
        konrad.dybcio@...ainline.org, marijn.suijten@...ainline.org,
        martin.botka@...ainline.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
Subject: Re: [PATCH v2 7/9] clk: qcom: gdsc: Implement NO_RET_PERIPH flag

Quoting AngeloGioacchino Del Regno (2021-01-13 10:38:15)
> In some rare occasions, we want to only set the RETAIN_MEM bit, but
> not the RETAIN_PERIPH one: this is seen on at least SDM630/636/660's
> GPU-GX GDSC, where unsetting and setting back the RETAIN_PERIPH bit
> will generate chaos and panics during GPU suspend time (mainly, the
> chaos is unaligned access).
> 
> For this reason, introduce a new NO_RET_PERIPH flag to the GDSC
> driver to address this corner case.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
> ---

Applied to clk-next