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>

diff --git a/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi
index 2b5e037ea9fa89074b11f43c5ea2957108faca09..83f5642d0d35c244223617eda5bf7c83793a6ed4 100644 (file)
--- 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 */
                };
        };