linux-kernel - [PATCH] arm64: dts: renesas: rzt2h-n2h-evk: Add VCC supply for EEPROM

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Message-ID: <20251014153314.177300-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Tue, 14 Oct 2025 16:33:14 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: 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>
Cc: linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH] arm64: dts: renesas: rzt2h-n2h-evk: Add VCC supply for EEPROM

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

The R1EX24016 EEPROM on the RZ/T2H-N2H Evaluation Kit is powered from
the 3.3V rail. Add the regulator phandle for the VCC supply to reflect
this in the device tree and avoid the fallback to the dummy regulator:

    at24 0-0050: supply vcc not found, using dummy regulator

Fixes: 0176c9e82e10 ("arm64: dts: renesas: rzt2h-n2h-evk-common: Enable EEPROM on I2C0")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
index ceecf0c30072..a19b2e289aad 100644
--- a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
@@ -160,6 +160,7 @@ eeprom: eeprom@50 {
 		compatible = "renesas,r1ex24016", "atmel,24c16";
 		reg = <0x50>;
 		pagesize = <16>;
+		vcc-supply = <&reg_3p3v>;
 	};
 };
 
-- 
2.43.0