linux-kernel - Re: [PATCH v1 2/5] clk: qcom: dispcc-sm8250: Add RETAIN_FF_ENABLE flag for mdss

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Message-ID: <1be5f419-0c03-9c57-8776-9e448c9f8441@somainline.org>
Date:   Thu, 27 Oct 2022 14:48:44 +0200
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     Robert Foss <robert.foss@...aro.org>, agross@...nel.org,
        bjorn.andersson@...aro.org, mturquette@...libre.com,
        sboyd@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Bjorn Andersson <quic_bjorande@...cinc.com>,
        dmitry.baryshkov@...aro.org, Jonathan Marek <jonathan@...ek.ca>
Subject: Re: [PATCH v1 2/5] clk: qcom: dispcc-sm8250: Add RETAIN_FF_ENABLE
 flag for mdss_gdsc


On 27/10/2022 14:34, Robert Foss wrote:
> All SoC supported by this driver supports the RETAIN_FF_ENABLE flag,
> so it should be enabled here.
>
> This feature enables registers to maintain their state after
> dis/re-enabling the GDSC.
>
> Signed-off-by: Robert Foss <robert.foss@...aro.org>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@...ainline.org>


Konrad

>   drivers/clk/qcom/dispcc-sm8250.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/clk/qcom/dispcc-sm8250.c b/drivers/clk/qcom/dispcc-sm8250.c
> index 180ac2726f7e..a7606580cf22 100644
> --- a/drivers/clk/qcom/dispcc-sm8250.c
> +++ b/drivers/clk/qcom/dispcc-sm8250.c
> @@ -1137,7 +1137,7 @@ static struct gdsc mdss_gdsc = {
>   		.name = "mdss_gdsc",
>   	},
>   	.pwrsts = PWRSTS_OFF_ON,
> -	.flags = HW_CTRL,
> +	.flags = HW_CTRL | RETAIN_FF_ENABLE,
>   };
>   
>   static struct clk_regmap *disp_cc_sm8250_clocks[] = {