linux-kernel - [PATCH RFT net-next 05/10] arm64: dts: allwinner: a523: Add GMAC200 ethernet controller

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Message-Id: <20250701165756.258356-6-wens@kernel.org>
Date: Wed,  2 Jul 2025 00:57:51 +0800
From: Chen-Yu Tsai <wens@...nel.org>
To: Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej@...nel.org>,
	Samuel Holland <samuel@...lland.org>
Cc: netdev@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Andre Przywara <andre.przywara@....com>
Subject: [PATCH RFT net-next 05/10] arm64: dts: allwinner: a523: Add GMAC200 ethernet controller

From: Chen-Yu Tsai <wens@...e.org>

The A523 SoC family has a second ethernet controller, called the
GMAC200. It is not exposed on all the SoCs in the family.

Add a device node for it. All the hardware specific settings are from
the vendor BSP.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 .../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index 65779754427d..5787ad72a918 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -165,6 +165,16 @@ rgmii0_pins: rgmii0-pins {
 				bias-disable;
 			};
 
+			rgmii1_pins: rgmii1-pins {
+				pins = "PJ0", "PJ1", "PJ2", "PJ3", "PJ4",
+				       "PJ5", "PJ6", "PJ7", "PJ8", "PJ9",
+				       "PJ11", "PJ12", "PJ13", "PJ14", "PJ15";
+				allwinner,pinmux = <5>;
+				function = "gmac1";
+				drive-strength = <40>;
+				bias-disable;
+			};
+
 			uart0_pb_pins: uart0-pb-pins {
 				pins = "PB9", "PB10";
 				allwinner,pinmux = <2>;
@@ -619,6 +629,51 @@ mdio0: mdio {
 			};
 		};
 
+		gmac1: ethernet@...0000 {
+			compatible = "allwinner,sun55i-a523-gmac200",
+				     "snps,dwmac-4.20a";
+			reg = <0x04510000 0x10000>;
+			clocks = <&ccu CLK_BUS_EMAC1>, <&ccu CLK_MBUS_EMAC1>;
+			clock-names = "stmmaceth", "mbus";
+			resets = <&ccu RST_BUS_EMAC1>;
+			reset-names = "stmmaceth";
+			interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "macirq";
+			pinctrl-names = "default";
+			pinctrl-0 = <&rgmii1_pins>;
+			power-domains = <&pck600 PD_VO1>;
+			syscon = <&syscon>;
+			snps,fixed-burst;
+			snps,axi-config = <&gmac1_stmmac_axi_setup>;
+			snps,mtl-rx-config = <&gmac1_mtl_rx_setup>;
+			snps,mtl-tx-config = <&gmac1_mtl_tx_setup>;
+			status = "disabled";
+
+			mdio1: mdio {
+				compatible = "snps,dwmac-mdio";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			gmac1_mtl_rx_setup: rx-queues-config {
+				snps,rx-queues-to-use = <1>;
+
+				queue0 {};
+			};
+
+			gmac1_stmmac_axi_setup: stmmac-axi-config {
+				snps,wr_osr_lmt = <0xf>;
+				snps,rd_osr_lmt = <0xf>;
+				snps,blen = <256 128 64 32 16 8 4>;
+			};
+
+			gmac1_mtl_tx_setup: tx_queues-config {
+				snps,tx-queues-to-use = <1>;
+
+				queue0 {};
+			};
+		};
+
 		ppu: power-controller@...1400 {
 			compatible = "allwinner,sun55i-a523-ppu";
 			reg = <0x07001400 0x400>;
-- 
2.39.5