linux-kernel - [PATCH 2/7] dt-bindings: phy: mediatek,tphy: add property to set pre-emphasis

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Message-ID: <20220819091344.2274-2-chunfeng.yun@mediatek.com>
Date:   Fri, 19 Aug 2022 17:13:39 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Vinod Koul <vkoul@...nel.org>, Rob Herring <robh+dt@...nel.org>
CC:     Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Eddie Hung <eddie.hung@...iatek.com>
Subject: [PATCH 2/7] dt-bindings: phy: mediatek,tphy: add property to set pre-emphasis

Add a property to set usb2 phy's pre-emphasis.

Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
---
 Documentation/devicetree/bindings/phy/mediatek,tphy.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
index 848edfb1f677..aee2f3027371 100644
--- a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
+++ b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
@@ -219,6 +219,13 @@ patternProperties:
         minimum: 1
         maximum: 15
 
+      mediatek,pre-emphasis:
+        description:
+          The selection of pre-emphasis (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
-- 
2.25.1