linux-kernel - [PATCH v1 1/2] dt-bindings: phy: mtk-tphy: add property for software role switch

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Message-ID: <20250814234825.810-1-me@adomerle.pw>
Date: Fri, 15 Aug 2025 03:48:24 +0400
From: Arseniy Velikanov <me@...merle.pw>
To: Chunfeng Yun <chunfeng.yun@...iatek.com>,
	Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: 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,
	~postmarketos/upstreaming@...ts.sr.ht,
	Arseniy Velikanov <me@...merle.pw>
Subject: [PATCH v1 1/2] dt-bindings: phy: mtk-tphy: add property for software role switch

Add a boolean property to enable software control of the PHY mode
switching.

Signed-off-by: Arseniy Velikanov <me@...merle.pw>
---
 Documentation/devicetree/bindings/phy/mediatek,tphy.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
index b2218c151939..a90890d4a86f 100644
--- a/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
+++ b/Documentation/devicetree/bindings/phy/mediatek,tphy.yaml
@@ -255,6 +255,12 @@ patternProperties:
           use the property "mediatek,syscon-type" for newer SoCs that support it.
         type: boolean
 
+      mediatek,software-role-switch:
+        description:
+          Forcibly sets the phy mode. In dual-role mode, it polls
+          role switcher and manually changes mode accordingly.
+          PHY port must be linked with the role switcher via device tree graphs.
+
       mediatek,syscon-type:
         $ref: /schemas/types.yaml#/definitions/phandle-array
         maxItems: 1
-- 
2.50.1