From 96a3f525708120379013d9d3265663c07ceb38d5 Mon Sep 17 00:00:00 2001
From: Paul Barker <paul.barker.ct@bp.renesas.com>
Date: Tue, 25 Jun 2024 21:03:14 +0100
Subject: [PATCH] arm64: dts: renesas: rzg2l: Set Ethernet PVDD to 1.8V

On the RZ/G2L & RZ/V2L SMARC SOMs, the RGMII interface between the SoC
and the Ethernet PHY operates at 1.8V.

The power supply for this interface may be correctly configured in
u-boot, but the kernel should not be relying on this. Now that the
RZ/G2L pinctrl driver supports configuring the Ethernet power supply
voltage, we can simply specify the desired voltage in the device tree.

Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/20240625200316.4282-8-paul.barker.ct@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 .../boot/dts/renesas/rzg2l-smarc-som.dtsi      | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi
index 2b5e037ea9fa..83f5642d0d35 100644
--- a/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi
@@ -182,6 +182,7 @@
 	eth0_pins: eth0 {
 		txc {
 			pinmux = <RZG2L_PORT_PINMUX(20, 0, 1)>; /* ET0_TXC */
+			power-source = <1800>;
 			output-enable;
 		};
 
@@ -199,14 +200,19 @@
 				 <RZG2L_PORT_PINMUX(25, 0, 1)>, /* ET0_RXD0 */
 				 <RZG2L_PORT_PINMUX(25, 1, 1)>, /* ET0_RXD1 */
 				 <RZG2L_PORT_PINMUX(26, 0, 1)>, /* ET0_RXD2 */
-				 <RZG2L_PORT_PINMUX(26, 1, 1)>, /* ET0_RXD3 */
-				 <RZG2L_PORT_PINMUX(1, 0, 1)>;  /* IRQ2 */
+				 <RZG2L_PORT_PINMUX(26, 1, 1)>; /* ET0_RXD3 */
+			power-source = <1800>;
+		};
+
+		irq {
+			pinmux = <RZG2L_PORT_PINMUX(1, 0, 1)>;  /* IRQ2 */
 		};
 	};
 
 	eth1_pins: eth1 {
 		txc {
 			pinmux = <RZG2L_PORT_PINMUX(29, 0, 1)>; /* ET1_TXC */
+			power-source = <1800>;
 			output-enable;
 		};
 
@@ -224,8 +230,12 @@
 				 <RZG2L_PORT_PINMUX(34, 1, 1)>, /* ET1_RXD0 */
 				 <RZG2L_PORT_PINMUX(35, 0, 1)>, /* ET1_RXD1 */
 				 <RZG2L_PORT_PINMUX(35, 1, 1)>, /* ET1_RXD2 */
-				 <RZG2L_PORT_PINMUX(36, 0, 1)>, /* ET1_RXD3 */
-				 <RZG2L_PORT_PINMUX(1, 1, 1)>;  /* IRQ3 */
+				 <RZG2L_PORT_PINMUX(36, 0, 1)>; /* ET1_RXD3 */
+			power-source = <1800>;
+		};
+
+		irq {
+			pinmux = <RZG2L_PORT_PINMUX(1, 1, 1)>;  /* IRQ3 */
 		};
 	};