scsi: ufs: Disable clock scaling

Disable clock scaling to avoid costly workqueue overheads. Power test results on Blueline: [without this change] Suspend: 9.75mA Idle: 238.26mA Camera Preview: 1309.99mA Partial Wake Lock: 13.67mA [with this change - disable clock scaling] Suspend: 9.73mA (-0.21%) Idle: 215.87mA (-9.4%) Camera Preview: 1181.71mA (-9.79%) Partial Wake Lock: 13.85mA (+1.32%) Bug: 78601190 Signed-off-by: Mimi Wu <[email protected]> Change-Id: I09f07619ab3e11b05149358c1d06b0d1039decf3
ghazzor · Sep 28, 2024 · 8176424 · 8176424
1 parent 7aec595
commit 8176424
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
@@ -1889,7 +1889,7 @@ static void ufs_qcom_set_caps(struct ufs_hba *hba)
 	if (!host->disable_lpm) {
 		hba->caps |= UFSHCD_CAP_CLK_GATING |
 			UFSHCD_CAP_HIBERN8_WITH_CLK_GATING |
-			UFSHCD_CAP_CLK_SCALING | UFSHCD_CAP_AUTO_BKOPS_SUSPEND |
+			UFSHCD_CAP_AUTO_BKOPS_SUSPEND |
 			UFSHCD_CAP_RPM_AUTOSUSPEND;
 		hba->caps |= UFSHCD_CAP_WB_EN;
 	}