| Message ID | 1606202906-14485-3-git-send-email-cang@codeaurora.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Refector ufshcd_setup_clocks() to remove param skip_ref_clk | expand |
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>
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;
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(+)