linux-kernel - Re: [PATCH 2/2] clk: gcc-sc8280xp: keep USB power-domains always-on

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Message-ID: <20220806151123.GJ14384@thinkpad>
Date:   Sat, 6 Aug 2022 20:41:23 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Johan Hovold <johan+linaro@...nel.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] clk: gcc-sc8280xp: keep USB power-domains always-on

On Fri, Aug 05, 2022 at 02:12:50PM +0200, Johan Hovold wrote:
> The Qualcomm DWC3 driver suspend implementation appears to be incomplete
> for SC8280XP so keep the USB power domains always-on for now so that the
> controller survives a suspend cycle.
> 
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

Thanks,
Mani

> ---
>  drivers/clk/qcom/gcc-sc8280xp.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/clk/qcom/gcc-sc8280xp.c b/drivers/clk/qcom/gcc-sc8280xp.c
> index eaeada42e13a..7768e6901dcc 100644
> --- a/drivers/clk/qcom/gcc-sc8280xp.c
> +++ b/drivers/clk/qcom/gcc-sc8280xp.c
> @@ -6843,12 +6843,17 @@ static struct gdsc ufs_phy_gdsc = {
>  	.pwrsts = PWRSTS_OFF_ON,
>  };
>  
> +/*
> + * The Qualcomm DWC3 driver suspend implementation appears to be incomplete
> + * for sc8280xp so keep the USB power domains always-on for now.
> + */
>  static struct gdsc usb30_mp_gdsc = {
>  	.gdscr = 0xab004,
>  	.pd = {
>  		.name = "usb30_mp_gdsc",
>  	},
>  	.pwrsts = PWRSTS_OFF_ON,
> +	.flags = ALWAYS_ON,
>  };
>  
>  static struct gdsc usb30_prim_gdsc = {
> @@ -6857,6 +6862,7 @@ static struct gdsc usb30_prim_gdsc = {
>  		.name = "usb30_prim_gdsc",
>  	},
>  	.pwrsts = PWRSTS_OFF_ON,
> +	.flags = ALWAYS_ON,
>  };
>  
>  static struct gdsc usb30_sec_gdsc = {
> @@ -6865,6 +6871,7 @@ static struct gdsc usb30_sec_gdsc = {
>  		.name = "usb30_sec_gdsc",
>  	},
>  	.pwrsts = PWRSTS_OFF_ON,
> +	.flags = ALWAYS_ON,
>  };
>  
>  static struct clk_regmap *gcc_sc8280xp_clocks[] = {
> -- 
> 2.35.1
> 

-- 
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