linux-kernel - Re: [PATCH v1 2/2] ufs: qcom: Enable aggressive power collapse for ufs hba

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Date:   Tue, 27 Oct 2020 10:06:04 +0800
From:   Can Guo <cang@...eaurora.org>
To:     Asutosh Das <asutoshd@...eaurora.org>
Cc:     martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 2/2] ufs: qcom: Enable aggressive power collapse for
 ufs hba

On 2020-10-27 07:30, Asutosh Das wrote:
> Enabling this capability to let hba power-collapse
> more often to save power.
> 
> Signed-off-by: Asutosh Das <asutoshd@...eaurora.org>

Reviewed-by: Can Guo <cang@...eaurora.org>

> ---
>  drivers/scsi/ufs/ufs-qcom.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
> index f9d6ef3..9a19c6d 100644
> --- a/drivers/scsi/ufs/ufs-qcom.c
> +++ b/drivers/scsi/ufs/ufs-qcom.c
> @@ -863,6 +863,7 @@ static void ufs_qcom_set_caps(struct ufs_hba *hba)
>  	hba->caps |= UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
>  	hba->caps |= UFSHCD_CAP_WB_EN;
>  	hba->caps |= UFSHCD_CAP_CRYPTO;
> +	hba->caps |= UFSHCD_CAP_AGGR_POWER_COLLAPSE;
> 
>  	if (host->hw_ver.major >= 0x2) {
>  		host->caps = UFS_QCOM_CAP_QUNIPRO |