ARM: dts: renesas: r9a06g032: Describe GMAC1

The r9a06g032 SoC of the RZ/N1 family features two GMAC devices named
GMAC1/2, that are based on Synopsys cores.  GMAC1 is connected to a
RGMII/RMII converter that is already described in this device tree.
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
[rgantois: commit log]
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>
Link: https://lore.kernel.org/r/20240513-rzn1-gmac1-v7-7-6acf58b5440d@bootlin.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm/boot/dts/renesas/r9a06g032.dtsi

@@ -316,6 +316,24 @@ dma1: dma-controller@40105000 {
 			data-width = <8>;
 		};
 
+		gmac1: ethernet@44000000 {
+			compatible = "renesas,r9a06g032-gmac", "renesas,rzn1-gmac", "snps,dwmac";
+			reg = <0x44000000 0x2000>;
+			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
+			clocks = <&sysctrl R9A06G032_HCLK_GMAC0>;
+			clock-names = "stmmaceth";
+			power-domains = <&sysctrl>;
+			snps,multicast-filter-bins = <256>;
+			snps,perfect-filter-entries = <128>;
+			tx-fifo-depth = <2048>;
+			rx-fifo-depth = <4096>;
+			pcs-handle = <&mii_conv1>;
+			status = "disabled";
+		};
+
 		gmac2: ethernet@44002000 {
 			compatible = "renesas,r9a06g032-gmac", "renesas,rzn1-gmac", "snps,dwmac";
 			reg = <0x44002000 0x2000>;