netdev - [PATCH v2] riscv: dts: sophgo: add ethernet GMAC device for sg2042

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Message-ID: <20250708064627.509363-1-inochiama@gmail.com>
Date: Tue,  8 Jul 2025 14:46:25 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen Wang <unicorn_wang@...look.com>,
	Inochi Amaoto <inochiama@...il.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	Richard Cochran <richardcochran@...il.com>,
	Uwe Kleine-König <u.kleine-koenig@...libre.com>,
	Zixian Zeng <sycamoremoon376@...il.com>,
	Guo Ren <guoren@...nel.org>
Cc: devicetree@...r.kernel.org,
	sophgo@...ts.linux.dev,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	Yixun Lan <dlan@...too.org>,
	Longbin Li <looong.bin@...il.com>,
	Han Gao <rabenda.cn@...il.com>
Subject: [PATCH v2] riscv: dts: sophgo: add ethernet GMAC device for sg2042

Add ethernet GMAC device node for the sg2042.

Signed-off-by: Inochi Amaoto <inochiama@...il.com>
Tested-by: Han Gao <rabenda.cn@...il.com>
---
Require the ethernet patch series for functional device:
https://lore.kernel.org/all/20250708064052.507094-1-inochiama@gmail.com/

Real board dts patch:
https://lore.kernel.org/linux-riscv/cover.1751700954.git.rabenda.cn@gmail.com/

Change from v1:
- https://lore.kernel.org/all/20250506093256.1107770-1-inochiama@gmail.com
1. separate from the original series and add dependency id
---
 arch/riscv/boot/dts/sophgo/sg2042.dtsi | 61 ++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/arch/riscv/boot/dts/sophgo/sg2042.dtsi b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
index 85636d1798f1..b3e4d3c18fdc 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042.dtsi
+++ b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
@@ -569,6 +569,67 @@ spi1: spi@...0005000 {
 			status = "disabled";
 		};

+		gmac0: ethernet@...0026000 {
+			compatible = "sophgo,sg2042-dwmac", "snps,dwmac-5.00a";
+			reg = <0x70 0x40026000 0x0 0x4000>;
+			clocks = <&clkgen GATE_CLK_AXI_ETH0>,
+				 <&clkgen GATE_CLK_PTP_REF_I_ETH0>,
+				 <&clkgen GATE_CLK_TX_ETH0>;
+			clock-names = "stmmaceth", "ptp_ref", "tx";
+			dma-noncoherent;
+			interrupt-parent = <&intc>;
+			interrupts = <132 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "macirq";
+			resets = <&rstgen RST_ETH0>;
+			reset-names = "stmmaceth";
+			snps,multicast-filter-bins = <0>;
+			snps,perfect-filter-entries = <1>;
+			snps,aal;
+			snps,tso;
+			snps,txpbl = <32>;
+			snps,rxpbl = <32>;
+			snps,mtl-rx-config = <&gmac0_mtl_rx_setup>;
+			snps,mtl-tx-config = <&gmac0_mtl_tx_setup>;
+			snps,axi-config = <&gmac0_stmmac_axi_setup>;
+			status = "disabled";
+
+			mdio {
+				compatible = "snps,dwmac-mdio";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			gmac0_mtl_rx_setup: rx-queues-config {
+				snps,rx-queues-to-use = <8>;
+				queue0 {};
+				queue1 {};
+				queue2 {};
+				queue3 {};
+				queue4 {};
+				queue5 {};
+				queue6 {};
+				queue7 {};
+			};
+
+			gmac0_mtl_tx_setup: tx-queues-config {
+				snps,tx-queues-to-use = <8>;
+				queue0 {};
+				queue1 {};
+				queue2 {};
+				queue3 {};
+				queue4 {};
+				queue5 {};
+				queue6 {};
+				queue7 {};
+			};
+
+			gmac0_stmmac_axi_setup: stmmac-axi-config {
+				snps,blen = <16 8 4 0 0 0 0>;
+				snps,wr_osr_lmt = <1>;
+				snps,rd_osr_lmt = <2>;
+			};
+		};
+
 		emmc: mmc@...002a000 {
 			compatible = "sophgo,sg2042-dwcmshc";
 			reg = <0x70 0x4002a000 0x0 0x1000>;

base-commit: cc6a9fb055e446e76a23867e42f12c4eff44eb00
prerequisite-patch-id: 7a82e319b011e5d0486a6ef4216d931d671c9f53
prerequisite-patch-id: 5a30fb99ec483c1f5a8dca97df862c3a042c9027
prerequisite-patch-id: e0da79790a934916d9fc39c18e8e98c9596d27ab
--
2.50.0