Messages in this thread | | | Date | Wed, 25 Nov 2020 10:02:36 +0800 | From | hongwus@codeauro ... | Subject | Re: [PATCH v2 2/2] scsi: ufs-qcom: Keep core_clk_unipro ON while link is active |
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On 2020-11-24 15:28, Can Guo wrote: > If we want to disable clocks to save power but still keep the link > active, > core_clk_unipro, as same as ref_clk, should not be the one being > disabled. > > Signed-off-by: Can Guo <cang@codeaurora.org> > --- > drivers/scsi/ufs/ufs-qcom.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c > index f9d6ef3..70df357 100644 > --- a/drivers/scsi/ufs/ufs-qcom.c > +++ b/drivers/scsi/ufs/ufs-qcom.c > @@ -977,6 +977,7 @@ static int ufs_qcom_init(struct ufs_hba *hba) > struct platform_device *pdev = to_platform_device(dev); > struct ufs_qcom_host *host; > struct resource *res; > + struct ufs_clk_info *clki; > > if (strlen(android_boot_dev) && strcmp(android_boot_dev, > dev_name(dev))) > return -ENODEV; > @@ -1075,6 +1076,11 @@ static int ufs_qcom_init(struct ufs_hba *hba) > } > } > > + list_for_each_entry(clki, &hba->clk_list_head, list) { > + if (!strcmp(clki->name, "core_clk_unipro")) > + clki->always_on_while_link_active = true; > + } > + > err = ufs_qcom_init_lane_clks(host); > if (err) > goto out_variant_clear;
Reviewed-by: Hongwu Su<hongwus@codeaurora.org>
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