diff options
| author | Konrad Dybcio <konrad.dybcio@linaro.org> | 2023-09-13 12:53:23 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-21 17:38:51 +0300 |
| commit | c20b59b2996c89c4f072c3312e6210528a298330 (patch) | |
| tree | 02f22d4d1e0e6c05755ca79b61c9eed9f48adca3 /Documentation/devicetree/bindings/phy | |
| parent | 77fee21e3cc0e24c7e60e554cc069cb3572b4011 (diff) | |
| download | linux-c20b59b2996c89c4f072c3312e6210528a298330.tar.xz | |
dt-bindings: phy: qcom,snps-eusb2-repeater: Add magic tuning overrides
The EUSB2 repeater requires some alterations to its init sequence,
depending on board design.
Add support for making the necessary changes to that sequence to make USB
functional on SM8550-based Xperia 1 V.
They all have lackluster description due to lack of information.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230830-topic-eusb2_override-v2-1-7d8c893d93f6@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/phy')
| -rw-r--r-- | Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml index 029569d5fcf3..24c733c10e0e 100644 --- a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml +++ b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml @@ -32,6 +32,27 @@ properties: vdd3-supply: true + qcom,tune-usb2-disc-thres: + $ref: /schemas/types.yaml#/definitions/uint8 + description: High-Speed disconnect threshold + minimum: 0 + maximum: 7 + default: 0 + + qcom,tune-usb2-amplitude: + $ref: /schemas/types.yaml#/definitions/uint8 + description: High-Speed trasmit amplitude + minimum: 0 + maximum: 15 + default: 8 + + qcom,tune-usb2-preem: + $ref: /schemas/types.yaml#/definitions/uint8 + description: High-Speed TX pre-emphasis tuning + minimum: 0 + maximum: 7 + default: 5 + required: - compatible - reg |