Messages in this thread Patch in this message | | | From | Chunfeng Yun <> | Subject | [PATCH v2 2/7] dt-bindings: phy: mediatek,tphy: add property to set pre-emphasis | Date | Mon, 29 Aug 2022 16:08:25 +0800 |
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Add a property to set usb2 phy's pre-emphasis, which used to widen eye opening and boost eye swing.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> --- v2: Add more description suggested by Krzysztof --- .../devicetree/bindings/phy/mediatek,tphy.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml index 848edfb1f677..e0754fb44451 100644 --- a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml +++ b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml @@ -219,6 +219,16 @@ patternProperties: minimum: 1 maximum: 15 + mediatek,pre-emphasis: + description: + The level of pre-emphasis which used to widen the eye opening and + boost eye swing, the unit step is about 4.16% increment; e.g. the + level 1 means amplitude increases about 4.16%, the level 2 is about + 8.3% etc. (U2 phy) + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 1 + maximum: 3 + mediatek,bc12: description: Specify the flag to enable BC1.2 if support it -- 2.18.0
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