As per specs, e.g, JESD220E chapter 7.2, while powering off/on the ufs device, REF_CLK signal should be between VSS(Ground) and VCCQ/VCCQ2. Signed-off-by: Ziqi Chen <ziqichen@xxxxxxxxxxxxxx> --- drivers/scsi/ufs/ufshcd.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index e221add..3f807f7 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -8686,8 +8686,6 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) if (ret) goto set_dev_active; - ufshcd_vreg_set_lpm(hba); - disable_clks: /* * Call vendor specific suspend callback. As these callbacks may access @@ -8711,6 +8709,8 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) hba->clk_gating.state); } + ufshcd_vreg_set_lpm(hba); + /* Put the host controller in low power mode if possible */ ufshcd_hba_vreg_set_lpm(hba); goto out; @@ -8778,18 +8778,18 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) old_link_state = hba->uic_link_state; ufshcd_hba_vreg_set_hpm(hba); + ret = ufshcd_vreg_set_hpm(hba); + if (ret) + goto out; + /* Make sure clocks are enabled before accessing controller */ ret = ufshcd_setup_clocks(hba, true); if (ret) - goto out; + goto disable_vreg; /* enable the host irq as host controller would be active soon */ ufshcd_enable_irq(hba); - ret = ufshcd_vreg_set_hpm(hba); - if (ret) - goto disable_irq_and_vops_clks; - /* * Call vendor specific resume callback. As these callbacks may access * vendor specific host controller register space call them when the @@ -8797,7 +8797,7 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) */ ret = ufshcd_vops_resume(hba, pm_op); if (ret) - goto disable_vreg; + goto disable_irq_and_vops_clks; /* For DeepSleep, the only supported option is to have the link off */ WARN_ON(ufshcd_is_ufs_dev_deepsleep(hba) && !ufshcd_is_link_off(hba)); @@ -8864,8 +8864,6 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) ufshcd_link_state_transition(hba, old_link_state, 0); vendor_suspend: ufshcd_vops_suspend(hba, pm_op); -disable_vreg: - ufshcd_vreg_set_lpm(hba); disable_irq_and_vops_clks: ufshcd_disable_irq(hba); if (hba->clk_scaling.is_allowed) @@ -8876,6 +8874,8 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) trace_ufshcd_clk_gating(dev_name(hba->dev), hba->clk_gating.state); } +disable_vreg: + ufshcd_vreg_set_lpm(hba); out: hba->pm_op_in_progress = 0; if (ret) -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
