[PATCH] riscv: dts: spacemit: k3: Add ethernet device node
Inochi Amaoto
inochiama at gmail.com
Wed Mar 4 00:25:41 PST 2026
Add all ethernet device nodes for K3 SoC. And enable the available
ethernet device for the PICO ITX board.
Signed-off-by: Inochi Amaoto <inochiama at gmail.com>
---
Require the following patch series:
1. Basic DT device patch
https://lore.kernel.org/spacemit/20260304-01-dts-uart-full-v1-0-50a0aa53a245@kernel.org
2. Ethernet driver patch
https://lore.kernel.org/spacemit/20260304080721.1658224-1-inochiama@gmail.com
---
arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 20 ++++
arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi | 38 +++++++
arch/riscv/boot/dts/spacemit/k3.dtsi | 106 +++++++++++++++++++
3 files changed, 164 insertions(+)
diff --git a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
index b098dbd0e7a1..47e4fa824417 100644
--- a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
+++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
@@ -6,6 +6,7 @@
#include "k3.dtsi"
#include "k3-pinctrl.dtsi"
+#include <dt-bindings/gpio/gpio.h>
/ {
model = "SpacemiT K3 Pico-ITX";
@@ -25,6 +26,25 @@ memory at 100000000 {
};
};
+ð0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&gmac0_cfg>;
+
+ phy-mode = "rgmii-id";
+ phy-handle = <&phy0>;
+ status = "okay";
+
+ mdio {
+ phy0: phy at 1 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+ reset-gpios = <&gpio 0 15 GPIO_ACTIVE_LOW>;
+ reset-assert-us = <10000>;
+ reset-deassert-us = <10000>;
+ };
+ };
+};
+
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_0_cfg>;
diff --git a/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
index efb0f1572188..256880192846 100644
--- a/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
@@ -21,4 +21,42 @@ uart0-0-pins {
drive-strength = <25>;
};
};
+
+ gmac0_cfg: gmac0-cfg {
+ gmac0_base_pins: gmac0-0-pins {
+ pinmux = <K3_PADCONF(0, 1)>,
+ <K3_PADCONF(1, 1)>,
+ <K3_PADCONF(2, 1)>,
+ <K3_PADCONF(3, 1)>,
+ <K3_PADCONF(6, 1)>,
+ <K3_PADCONF(7, 1)>,
+ <K3_PADCONF(11, 1)>,
+ <K3_PADCONF(12, 1)>,
+ <K3_PADCONF(13, 1)>;
+
+ bias-disable;
+ drive-strength = <25>;
+ power-source = <1800>;
+ };
+
+ gmac0_rgmii_add_pins: gmac0-1-pins {
+ pinmux = <K3_PADCONF(4, 1)>,
+ <K3_PADCONF(5, 1)>,
+ <K3_PADCONF(8, 1)>,
+ <K3_PADCONF(9, 1)>,
+ <K3_PADCONF(10, 1)>;
+
+ bias-disable;
+ drive-strength = <25>;
+ power-source = <1800>;
+ };
+
+ gmac0_int_pins: gmac0-3-pins {
+ pinmux = <K3_PADCONF(14, 1)>;
+
+ bias-disable;
+ drive-strength = <25>;
+ power-source = <1800>;
+ };
+ };
};
diff --git a/arch/riscv/boot/dts/spacemit/k3.dtsi b/arch/riscv/boot/dts/spacemit/k3.dtsi
index a3a8ceddabec..237fb00e4bc4 100644
--- a/arch/riscv/boot/dts/spacemit/k3.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k3.dtsi
@@ -438,6 +438,112 @@ soc: soc {
dma-noncoherent;
ranges;
+ gmac_axi_setup: stmmac-axi-config {
+ snps,wr_osr_lmt = <0xf>;
+ snps,rd_osr_lmt = <0xf>;
+ /* max axi burst len is 256 */
+ snps,blen = <256 128 64 32 16 0 0>;
+ };
+
+ eth0: ethernet at cac80000 {
+ compatible = "spacemit,k3-dwmac", "snps,dwmac-5.40a";
+ reg = <0x0 0xcac80000 0x0 0x2000>;
+ clocks = <&syscon_apmu CLK_APMU_EMAC0_BUS>,
+ <&syscon_apmu CLK_APMU_EMAC0_1588>,
+ <&syscon_apmu CLK_APMU_EMAC0_RGMII_TX>;
+ clock-names = "stmmaceth", "ptp_ref", "tx";
+ interrupt-parent = <&saplic>;
+ interrupts = <131 IRQ_TYPE_LEVEL_HIGH>,
+ <276 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "macirq", "eth_wake_irq";
+ resets = <&syscon_apmu RESET_APMU_EMAC0>;
+ reset-names = "stmmaceth";
+ rx-fifo-depth = <8192>;
+ tx-fifo-depth = <8192>;
+ snps,multicast-filter-bins = <64>;
+ snps,perfect-filter-entries = <32>;
+ snps,aal;
+ snps,tso;
+ snps,txpbl = <8>;
+ snps,rxpbl = <8>;
+ snps,force_sf_dma_mode;
+ snps,axi-config = <&gmac_axi_setup>;
+ spacemit,apmu = <&syscon_apmu 0x3e4 0x3e8>;
+ status = "disabled";
+
+ mdio {
+ compatible = "snps,dwmac-mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+
+ eth1: ethernet at cac82000 {
+ compatible = "spacemit,k3-dwmac", "snps,dwmac-5.40a";
+ reg = <0x0 0xcac82000 0x0 0x2000>;
+ clocks = <&syscon_apmu CLK_APMU_EMAC1_BUS>,
+ <&syscon_apmu CLK_APMU_EMAC1_1588>,
+ <&syscon_apmu CLK_APMU_EMAC1_RGMII_TX>;
+ clock-names = "stmmaceth", "ptp_ref", "tx";
+ interrupt-parent = <&saplic>;
+ interrupts = <133 IRQ_TYPE_LEVEL_HIGH>,
+ <277 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "macirq", "eth_wake_irq";
+ resets = <&syscon_apmu RESET_APMU_EMAC1>;
+ reset-names = "stmmaceth";
+ rx-fifo-depth = <8192>;
+ tx-fifo-depth = <8192>;
+ snps,multicast-filter-bins = <64>;
+ snps,perfect-filter-entries = <32>;
+ snps,aal;
+ snps,tso;
+ snps,txpbl = <8>;
+ snps,rxpbl = <8>;
+ snps,force_sf_dma_mode;
+ snps,axi-config = <&gmac_axi_setup>;
+ spacemit,apmu = <&syscon_apmu 0x3ec 0x3f0>;
+ status = "disabled";
+
+ mdio {
+ compatible = "snps,dwmac-mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+
+ eth2: ethernet at cac8e000 {
+ compatible = "spacemit,k3-dwmac", "snps,dwmac-5.40a";
+ reg = <0x0 0xcac8e000 0x0 0x2000>;
+ clocks = <&syscon_apmu CLK_APMU_EMAC2_BUS>,
+ <&syscon_apmu CLK_APMU_EMAC2_1588>,
+ <&syscon_apmu CLK_APMU_EMAC2_RGMII_TX>;
+ clock-names = "stmmaceth", "ptp_ref", "tx";
+ interrupt-parent = <&saplic>;
+ interrupts = <130 IRQ_TYPE_LEVEL_HIGH>,
+ <278 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "macirq", "eth_wake_irq";
+ resets = <&syscon_apmu RESET_APMU_EMAC2>;
+ reset-names = "stmmaceth";
+ rx-fifo-depth = <4096>;
+ tx-fifo-depth = <4096>;
+ snps,multicast-filter-bins = <64>;
+ snps,perfect-filter-entries = <32>;
+ snps,aal;
+ snps,tso;
+ snps,txpbl = <8>;
+ snps,rxpbl = <8>;
+ snps,force_sf_dma_mode;
+ snps,axi-config = <&gmac_axi_setup>;
+ spacemit,apmu = <&syscon_apmu 0x248 0x24c>;
+ status = "disabled";
+
+ mdio {
+ compatible = "snps,dwmac-mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+
syscon_apbc: system-controller at d4015000 {
compatible = "spacemit,k3-syscon-apbc";
reg = <0x0 0xd4015000 0x0 0x1000>;
base-commit: 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f
prerequisite-patch-id: 68c4d869548687dc115dd91e2ffb8f4c11482d86
prerequisite-patch-id: fdadcf964c2cb3406160edb579d99a8d5695f8e6
prerequisite-patch-id: 73b9e745338b0499b849fa4f7f9508987ab39a59
prerequisite-patch-id: cd26770c2160c3c31a406bd8a6b01ab666180ae0
prerequisite-patch-id: 93a515969fca3b15f827b3507979422dda14db8b
prerequisite-patch-id: a637cffacb823aa7ae91e03ed42831ef8fbd0d1f
prerequisite-patch-id: 40c49afe4eb71457913c45ddb720a9c8917aa827
--
2.53.0
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