From 0cc64561b03d755bba54cbd0cf05e9210ab40a13 Mon Sep 17 00:00:00 2001 From: Ritesh Kumar Date: Wed, 28 Jan 2026 17:18:49 +0530 Subject: [PATCH] dt-bindings: phy: qcom-edp: Add reference clock for sa8775p eDP PHY The initial sa8775p eDP PHY binding contribution missed adding support for voting on the eDP reference clock. This went unnoticed because the UFS PHY driver happened to enable the same clock. After commit 77d2fa54a945 ("scsi: ufs: qcom : Refactor phy_power_on/off calls"), the eDP reference clock is no longer kept enabled, which results in the following PHY power-on failure: phy phy-aec2a00.phy.10: phy poweron failed --> -110 To fix this, explicit voting for the eDP reference clock is required. This patch adds the eDP reference clock for sa8775p eDP PHY and updates the corresponding example node. Signed-off-by: Ritesh Kumar Reviewed-by: Bjorn Andersson Acked-by: Dmitry Baryshkov Acked-by: Rob Herring (Arm) Link: https://patch.msgid.link/20260128114853.2543416-2-quic_riteshk@quicinc.com Signed-off-by: Vinod Koul --- .../devicetree/bindings/display/msm/qcom,sa8775p-mdss.yaml | 6 ++++-- Documentation/devicetree/bindings/phy/qcom,edp-phy.yaml | 1 + 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sa8775p-mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sa8775p-mdss.yaml index e2730a2f25cf..6c827cf9692b 100644 --- a/Documentation/devicetree/bindings/display/msm/qcom,sa8775p-mdss.yaml +++ b/Documentation/devicetree/bindings/display/msm/qcom,sa8775p-mdss.yaml @@ -200,9 +200,11 @@ examples: <0x0aec2000 0x1c8>; clocks = <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_AUX_CLK>, - <&dispcc0 MDSS_DISP_CC_MDSS_AHB_CLK>; + <&dispcc0 MDSS_DISP_CC_MDSS_AHB_CLK>, + <&gcc GCC_EDP_REF_CLKREF_EN>; clock-names = "aux", - "cfg_ahb"; + "cfg_ahb", + "ref"; #clock-cells = <1>; #phy-cells = <0>; diff --git a/Documentation/devicetree/bindings/phy/qcom,edp-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,edp-phy.yaml index 4a1daae3d8d4..0bf8bf4f66ac 100644 --- a/Documentation/devicetree/bindings/phy/qcom,edp-phy.yaml +++ b/Documentation/devicetree/bindings/phy/qcom,edp-phy.yaml @@ -74,6 +74,7 @@ allOf: compatible: enum: - qcom,glymur-dp-phy + - qcom,sa8775p-edp-phy - qcom,x1e80100-dp-phy then: properties: