From 96f08cc5943c0fe943ea10fdead6a80b73270046 Mon Sep 17 00:00:00 2001 From: Can Guo Date: Wed, 25 Nov 2020 18:01:01 -0800 Subject: [PATCH] scsi: ufs-qcom: Keep core_clk_unipro on while link is active If we want to disable clocks to save power but still keep the link active, core_clk_unipro, like ref_clk, should not be the one being disabled. Link: https://lore.kernel.org/r/1606356063-38380-3-git-send-email-cang@codeaurora.org Reviewed-by: Hongwu Su Reviewed-by: Asutosh Das Signed-off-by: Can Guo Signed-off-by: Martin K. Petersen --- 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 1e434cc..2206b1e 100644 --- a/drivers/scsi/ufs/ufs-qcom.c +++ b/drivers/scsi/ufs/ufs-qcom.c @@ -959,6 +959,7 @@ 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; @@ -1057,6 +1058,11 @@ 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->keep_link_active = true; + } + err = ufs_qcom_init_lane_clks(host); if (err) goto out_variant_clear; -- 2.7.4