linux-kernel - [PATCH 15/18] arm64: dts: renesas: r9a09g057: Add USB2.0 PHY VBUS internal regulator node

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Message-ID: <20251001212709.579080-16-tommaso.merciai.xr@bp.renesas.com>
Date: Wed,  1 Oct 2025 23:26:59 +0200
From: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
To: tomm.merciai@...il.com
Cc: linux-renesas-soc@...r.kernel.org,
	biju.das.jz@...renesas.com,
	Tommaso Merciai <tommaso.merciai.xr@...renesas.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-phy@...ts.infradead.org
Subject: [PATCH 15/18] arm64: dts: renesas: r9a09g057: Add USB2.0 PHY VBUS internal regulator node

USB2.0 PHY of the RZ/V2H(P) SoC can drive VBUS line via the VBOUT bit of
the VBCTRL register.

Add VBUS regulator nodes (usb2_phy0_vbus_otg) under the usb2_phy0
nodes to describe this hw functionality.

This enables proper management of VBUS for USB2.0 OTG devices and ensures
compliance with hardware requirements.

Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
---
 arch/arm64/boot/dts/renesas/r9a09g057.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi b/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
index 630f7a98df38..73b7d6cc2db0 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
@@ -985,6 +985,12 @@ usb2_phy0: usb-phy@...00200 {
 			#phy-cells = <1>;
 			power-domains = <&cpg>;
 			status = "disabled";
+
+			usb2_phy0_vbus_otg: vbus-regulator {
+				regulator-name = "USB2PHY0-VBUS-OTG";
+				regulator-boot-on;
+				status = "disabled";
+			};
 		};
 
 		usb2_phy1: usb-phy@...10200 {
-- 
2.43.0