linux-kernel - [PATCH V4 01/11] scsi: ufs: qcom: add a new phy calibrate API call

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Message-ID: <20250503162440.2954-2-quic_nitirawa@quicinc.com>
Date: Sat,  3 May 2025 21:54:30 +0530
From: Nitin Rawat <quic_nitirawa@...cinc.com>
To: vkoul@...nel.org, kishon@...nel.org, manivannan.sadhasivam@...aro.org,
        James.Bottomley@...senPartnership.com, martin.petersen@...cle.com,
        bvanassche@....org, andersson@...nel.org, neil.armstrong@...aro.org,
        konrad.dybcio@....qualcomm.com
Cc: quic_rdwivedi@...cinc.com, quic_cang@...cinc.com,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
        Nitin Rawat <quic_nitirawa@...cinc.com>
Subject: [PATCH V4 01/11] scsi: ufs: qcom: add a new phy calibrate API call

Introduce a new phy calibrate API call in the UFS Qualcomm driver to
separate phy calibration from phy power-on. This change is a precursor
to the next patchset in this series, which requires these two operations
to be distinct.

Signed-off-by: Nitin Rawat <quic_nitirawa@...cinc.com>
---
 drivers/ufs/host/ufs-qcom.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 1b37449fbffc..2cd44ee522b8 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -473,6 +473,12 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *hba)
 		goto out_disable_phy;
 	}

+	ret = phy_calibrate(phy);
+	if (ret) {
+		dev_err(hba->dev, "Failed to calibrate PHY: %d\n", ret);
+		goto out_disable_phy;
+	}
+
 	ufs_qcom_select_unipro_mode(host);

 	return 0;
--
2.48.1