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Message-Id: <20251016-openwrt-one-network-v1-10-de259719b6f2@collabora.com>
Date: Thu, 16 Oct 2025 12:08:46 +0200
From: Sjoerd Simons <sjoerd@...labora.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Ryder Lee <ryder.lee@...iatek.com>, 
 Jianjun Wang <jianjun.wang@...iatek.com>, 
 Bjorn Helgaas <bhelgaas@...gle.com>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof Wilczyński <kwilczynski@...nel.org>, 
 Manivannan Sadhasivam <mani@...nel.org>, 
 Chunfeng Yun <chunfeng.yun@...iatek.com>, Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, Lee Jones <lee@...nel.org>, 
 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>, 
 Lorenzo Bianconi <lorenzo@...nel.org>, Felix Fietkau <nbd@....name>
Cc: kernel@...labora.com, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, linux-pci@...r.kernel.org, 
 linux-phy@...ts.infradead.org, netdev@...r.kernel.org, 
 Daniel Golle <daniel@...rotopia.org>, Bryan Hinton <bryan@...anhinton.com>, 
 Sjoerd Simons <sjoerd@...labora.com>
Subject: [PATCH 10/15] arm64: dts: mediatek: mt7981b: Add Ethernet and WiFi
 offload support

Add device tree nodes for the Ethernet subsystem on MT7981B SoC,
including:
- Ethernet MAC controller with dual GMAC support
- Wireless Ethernet Dispatch (WED)
- SGMII PHY controllers for high-speed Ethernet interfaces
- Reserved memory regions for WiFi offload processor

Signed-off-by: Sjoerd Simons <sjoerd@...labora.com>
---
 arch/arm64/boot/dts/mediatek/mt7981b.dtsi | 133 ++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
index 13950fe6e8766..c85fa0ddf2da8 100644
--- a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
@@ -2,6 +2,7 @@
 
 #include <dt-bindings/clock/mediatek,mt7981-clk.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/leds/common.h>
 #include <dt-bindings/phy/phy.h>
 #include <dt-bindings/reset/mt7986-resets.h>
 
@@ -47,11 +48,36 @@ reserved-memory {
 		#size-cells = <2>;
 		ranges;
 
+		wo_boot: wo-boot@...94000 {
+			reg = <0 0x15194000 0 0x1000>;
+			no-map;
+		};
+
+		wo_ilm0: wo-ilm@...e0000 {
+			reg = <0 0x151e0000 0 0x8000>;
+			no-map;
+		};
+
+		wo_dlm0: wo-dlm@...e8000 {
+			reg = <0 0x151e8000 0 0x2000>;
+			no-map;
+		};
+
 		/* 192 KiB reserved for ARM Trusted Firmware (BL31) */
 		secmon_reserved: secmon@...00000 {
 			reg = <0 0x43000000 0 0x30000>;
 			no-map;
 		};
+
+		wo_emi0: wo-emi@...80000 {
+			reg = <0 0x47d80000 0 0x40000>;
+			no-map;
+		};
+
+		wo_data: wo-data@...c0000 {
+			reg = <0 0x47dc0000 0 0x240000>;
+			no-map;
+		};
 	};
 
 	soc {
@@ -107,6 +133,18 @@ pwm: pwm@...48000 {
 			#pwm-cells = <2>;
 		};
 
+		sgmiisys0: syscon@...60000 {
+			compatible = "mediatek,mt7981-sgmiisys_0", "syscon";
+			reg = <0 0x10060000 0 0x1000>;
+			#clock-cells = <1>;
+		};
+
+		sgmiisys1: syscon@...70000 {
+			compatible = "mediatek,mt7981-sgmiisys_1", "syscon";
+			reg = <0 0x10070000 0 0x1000>;
+			#clock-cells = <1>;
+		};
+
 		uart0: serial@...02000 {
 			compatible = "mediatek,mt7981-uart", "mediatek,mt6577-uart";
 			reg = <0 0x11002000 0 0x100>;
@@ -338,6 +376,10 @@ soc-uuid@140 {
 			thermal_calibration: thermal-calib@274 {
 				reg = <0x274 0xc>;
 			};
+
+			phy_calibration: phy-calib@8dc {
+				reg = <0x8dc 0x10>;
+			};
 		};
 
 		ethsys: clock-controller@...00000 {
@@ -347,6 +389,97 @@ ethsys: clock-controller@...00000 {
 			#reset-cells = <1>;
 		};
 
+		wed: wed@...10000 {
+			compatible = "mediatek,mt7981-wed",
+				     "syscon";
+			reg = <0 0x15010000 0 0x1000>;
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH>;
+			memory-region = <&wo_emi0>, <&wo_ilm0>, <&wo_dlm0>,
+					<&wo_data>, <&wo_boot>;
+			memory-region-names = "wo-emi", "wo-ilm", "wo-dlm",
+					      "wo-data", "wo-boot";
+			mediatek,wo-ccif = <&wo_ccif0>;
+		};
+
+		eth: ethernet@...00000 {
+			compatible = "mediatek,mt7981-eth";
+			reg = <0 0x15100000 0 0x40000>;
+			assigned-clocks = <&topckgen CLK_TOP_NETSYS_2X_SEL>,
+					  <&topckgen CLK_TOP_SGM_325M_SEL>;
+			assigned-clock-parents = <&topckgen CLK_TOP_CB_NET2_800M>,
+						 <&topckgen CLK_TOP_CB_SGM_325M>;
+			clocks = <&ethsys CLK_ETH_FE_EN>,
+				 <&ethsys CLK_ETH_GP2_EN>,
+				 <&ethsys CLK_ETH_GP1_EN>,
+				 <&ethsys CLK_ETH_WOCPU0_EN>,
+				 <&topckgen CLK_TOP_SGM_REG>,
+				 <&sgmiisys0 CLK_SGM0_TX_EN>,
+				 <&sgmiisys0 CLK_SGM0_RX_EN>,
+				 <&sgmiisys0 CLK_SGM0_CK0_EN>,
+				 <&sgmiisys0 CLK_SGM0_CDR_CK0_EN>,
+				 <&sgmiisys1 CLK_SGM1_TX_EN>,
+				 <&sgmiisys1 CLK_SGM1_RX_EN>,
+				 <&sgmiisys1 CLK_SGM1_CK1_EN>,
+				 <&sgmiisys1 CLK_SGM1_CDR_CK1_EN>,
+				 <&topckgen CLK_TOP_NETSYS_SEL>,
+				 <&topckgen CLK_TOP_NETSYS_500M_SEL>;
+			clock-names = "fe", "gp2", "gp1", "wocpu0",
+				      "sgmii_ck",
+				      "sgmii_tx250m", "sgmii_rx250m",
+				      "sgmii_cdr_ref", "sgmii_cdr_fb",
+				      "sgmii2_tx250m", "sgmii2_rx250m",
+				      "sgmii2_cdr_ref", "sgmii2_cdr_fb",
+				      "netsys0", "netsys1";
+			interrupts = <GIC_SPI 196 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 197 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 198 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 199 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 189 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 190 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 191 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "fe0", "fe1", "fe2", "fe3", "pdma0",
+					  "pdma1", "pdma2", "pdma3";
+			sram = <&eth_sram>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			mediatek,ethsys = <&ethsys>;
+			mediatek,sgmiisys = <&sgmiisys0>, <&sgmiisys1>;
+			mediatek,infracfg = <&topmisc>;
+			mediatek,wed = <&wed>;
+			status = "disabled";
+
+			mdio_bus: mdio-bus {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				int_gbe_phy: ethernet-phy@0 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <0>;
+					phy-mode = "gmii";
+					phy-is-integrated;
+					nvmem-cells = <&phy_calibration>;
+					nvmem-cell-names = "phy-cal-data";
+				};
+			};
+		};
+
+		eth_sram: sram@...40000 {
+			compatible = "mmio-sram";
+			reg = <0 0x15140000 0 0x40000>;
+			ranges = <0 0x15140000 0 0x40000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+		};
+
+		wo_ccif0: syscon@...a5000 {
+			compatible = "mediatek,mt7986-wo-ccif", "syscon";
+			reg = <0 0x151a5000 0 0x1000>;
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SPI 211 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
 		wifi: wifi@...00000 {
 			compatible = "mediatek,mt7981-wmac";
 			reg = <0 0x18000000 0 0x1000000>,

-- 
2.51.0

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