From 791cfbe1c56076c9d3bcf856b5175bfbc9c5a2d4 Mon Sep 17 00:00:00 2001 From: Luca Weiss Date: Wed, 9 Jul 2025 16:55:14 +0200 Subject: [PATCH] dt-bindings: phy: qcom,snps-eusb2-repeater: Document qcom,tune-res-fsdif Document the FS Differential TX Output Resistance Tuning value found on the eUSB2 repeater on Qualcomm PMICs. The tuning values have special meanings, being different offsets of the resistance to the default value in Ohms but the exact meaning is not relevant here, as the correct tuning is determined by hardware engineers to make sure the electrical properties are as expected. Signed-off-by: Luca Weiss Reviewed-by: Rob Herring (Arm) Link: https://lore.kernel.org/r/20250709-sm7635-eusb-repeater-v2-1-b6eff075c097@fairphone.com Signed-off-by: Vinod Koul --- .../devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml index 27f064a71c9fb..6bfd11657e299 100644 --- a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml +++ b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml @@ -52,6 +52,12 @@ properties: minimum: 0 maximum: 7 + qcom,tune-res-fsdif: + $ref: /schemas/types.yaml#/definitions/uint8 + description: FS Differential TX Output Resistance Tuning + minimum: 0 + maximum: 7 + required: - compatible - reg -- 2.47.3