linux-kernel - [PATCH v2] phy: qcom: m31: match requested regulator name with dt schema

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Date: Sat, 06 Apr 2024 15:37:09 +0200
From: Gabor Juhos <j4g8y7@...il.com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, 
 Sricharan Ramabadhran <quic_srichara@...cinc.com>, 
 Varadarajan Narayanan <quic_varada@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Gabor Juhos <j4g8y7@...il.com>
Subject: [PATCH v2] phy: qcom: m31: match requested regulator name with dt
 schema

According to the 'qcom,ipq5332-usb-hsphy.yaml' schema, the 5V
supply regulator must be defined via the 'vdd-supply' property.
The driver however requests for the 'vdda-phy' regulator which
results in the following message when the driver is probed on
a IPQ5018 based board with a device tree matching to the schema:

  qcom-m31usb-phy 5b000.phy: supply vdda-phy not found, using dummy regulator
  qcom-m31usb-phy 5b000.phy: Registered M31 USB phy

This means that the regulator specified in the device tree never
gets enabled.

Change the driver to use the 'vdd' name for the regulator as per
defined in the schema in order to ensure that the corresponding
regulator gets enabled.

Fixes: 08e49af50701 ("phy: qcom: Introduce M31 USB PHY driver")
Reviewed-by: Varadarajan Narayanan <quic_varada@...cinc.com>
Signed-off-by: Gabor Juhos <j4g8y7@...il.com>
---
Changes in v2:
- rebase on top of phy/fixes; ee13e1f3c72b ("phy: qcom: qmp-combo: Fix
  register base for QSERDES_DP_PHY_MODE")
- add Reviewed-by tag from Varadarajan Narayanan
- Link to v1: https://lore.kernel.org/r/20240220-phy-qcom-m31-regulator-fix-v1-1-7675b4a916b3@gmail.com
---
 drivers/phy/qualcomm/phy-qcom-m31.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-m31.c b/drivers/phy/qualcomm/phy-qcom-m31.c
index 03fb0d4b75d7..20d4c020a83c 100644
--- a/drivers/phy/qualcomm/phy-qcom-m31.c
+++ b/drivers/phy/qualcomm/phy-qcom-m31.c
@@ -297,7 +297,7 @@ static int m31usb_phy_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, PTR_ERR(qphy->phy),
 				     "failed to create phy\n");
 
-	qphy->vreg = devm_regulator_get(dev, "vdda-phy");
+	qphy->vreg = devm_regulator_get(dev, "vdd");
 	if (IS_ERR(qphy->vreg))
 		return dev_err_probe(dev, PTR_ERR(qphy->vreg),
 				     "failed to get vreg\n");

---
base-commit: ee13e1f3c72b9464a4d73017c060ab503eed653a
change-id: 20240220-phy-qcom-m31-regulator-fix-97555a4650b1

Best regards,
-- 
Gabor Juhos <j4g8y7@...il.com>