linux-kernel - [PATCH 1/2] arm64: dts: rockchip: Add phy-supply to gmac0 on NanoPi R5S

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Message-ID: <20250503152917.138648-2-didi.debian@cknow.org>
Date: Sat,  3 May 2025 17:22:18 +0200
From: Diederik de Haas <didi.debian@...ow.org>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>
Cc: devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Dragan Simic <dsimic@...jaro.org>,
	Vasily Khoruzhick <anarsoul@...il.com>,
	Tianling Shen <cnsztl@...il.com>,
	Diederik de Haas <didi.debian@...ow.org>
Subject: [PATCH 1/2] arm64: dts: rockchip: Add phy-supply to gmac0 on NanoPi R5S

According to paragraph "7.16. Power" of the RTL8211F-CG datasheet, gmac0
needs to have a 3.3V power supply.
On page 22 of the NanoPi R5S version 2204, that is identified as
VCC_GEPHY_3V3 which is connected to the VCC_3V3 power source.

This fixes the following warning:

  rk_gmac-dwmac fe2a0000.ethernet: supply phy not found, using dummy regulator

Signed-off-by: Diederik de Haas <didi.debian@...ow.org>
---
 arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts b/arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts
index e50f1585244a..805cb23493e8 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts
@@ -61,6 +61,7 @@ &gmac0 {
 	clock_in_out = "output";
 	phy-handle = <&rgmii_phy0>;
 	phy-mode = "rgmii";
+	phy-supply = <&vcc_3v3>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&gmac0_miim
 		     &gmac0_tx_bus2
-- 
2.49.0