[PATCH net-next 3/4] riscv: dts: spacemit: Add Ethernet support for K1
From: Vivian Wang
Date: Thu Jun 12 2025 - 22:20:54 EST
Add nodes for each of the two Ethernet MACs on K1 with generic
properties. Also add "gmac" pins to pinctrl config.
Signed-off-by: Vivian Wang <wangruikang@xxxxxxxxxxx>
---
arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 48 ++++++++++++++++++++++++++++
arch/riscv/boot/dts/spacemit/k1.dtsi | 22 +++++++++++++
2 files changed, 70 insertions(+)
diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
index 283663647a86ff137917ced8bfe79a129c86342a..4a7fbb40858dc1e7d2a55d4bb8547d5472ec4fc3 100644
--- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
@@ -20,4 +20,52 @@ uart0-2-pins {
drive-strength = <32>;
};
};
+
+ gmac0_cfg: gmac0-cfg {
+ gmac0-pins {
+ pinmux = <K1_PADCONF(0, 1)>, /* gmac0_rxdv */
+ <K1_PADCONF(1, 1)>, /* gmac0_rx_d0 */
+ <K1_PADCONF(2, 1)>, /* gmac0_rx_d1 */
+ <K1_PADCONF(3, 1)>, /* gmac0_rx_clk */
+ <K1_PADCONF(4, 1)>, /* gmac0_rx_d2 */
+ <K1_PADCONF(5, 1)>, /* gmac0_rx_d3 */
+ <K1_PADCONF(6, 1)>, /* gmac0_tx_d0 */
+ <K1_PADCONF(7, 1)>, /* gmac0_tx_d1 */
+ <K1_PADCONF(8, 1)>, /* gmac0_tx */
+ <K1_PADCONF(9, 1)>, /* gmac0_tx_d2 */
+ <K1_PADCONF(10, 1)>, /* gmac0_tx_d3 */
+ <K1_PADCONF(11, 1)>, /* gmac0_tx_en */
+ <K1_PADCONF(12, 1)>, /* gmac0_mdc */
+ <K1_PADCONF(13, 1)>, /* gmac0_mdio */
+ <K1_PADCONF(14, 1)>, /* gmac0_int_n */
+ <K1_PADCONF(45, 1)>; /* gmac0_clk_ref */
+
+ bias-pull-up = <0>;
+ drive-strength = <21>;
+ };
+ };
+
+ gmac1_cfg: gmac1-cfg {
+ gmac1-pins {
+ pinmux = <K1_PADCONF(29, 1)>, /* gmac1_rxdv */
+ <K1_PADCONF(30, 1)>, /* gmac1_rx_d0 */
+ <K1_PADCONF(31, 1)>, /* gmac1_rx_d1 */
+ <K1_PADCONF(32, 1)>, /* gmac1_rx_clk */
+ <K1_PADCONF(33, 1)>, /* gmac1_rx_d2 */
+ <K1_PADCONF(34, 1)>, /* gmac1_rx_d3 */
+ <K1_PADCONF(35, 1)>, /* gmac1_tx_d0 */
+ <K1_PADCONF(36, 1)>, /* gmac1_tx_d1 */
+ <K1_PADCONF(37, 1)>, /* gmac1_tx */
+ <K1_PADCONF(38, 1)>, /* gmac1_tx_d2 */
+ <K1_PADCONF(39, 1)>, /* gmac1_tx_d3 */
+ <K1_PADCONF(40, 1)>, /* gmac1_tx_en */
+ <K1_PADCONF(41, 1)>, /* gmac1_mdc */
+ <K1_PADCONF(42, 1)>, /* gmac1_mdio */
+ <K1_PADCONF(43, 1)>, /* gmac1_int_n */
+ <K1_PADCONF(46, 1)>; /* gmac1_clk_ref */
+
+ bias-pull-up = <0>;
+ drive-strength = <21>;
+ };
+ };
};
diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi
index de403bda2b878c60d9eb5b4d8d336e5c52498159..61c804d3a3791127b5fee7ae78dd5be44dd33318 100644
--- a/arch/riscv/boot/dts/spacemit/k1.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1.dtsi
@@ -580,5 +580,27 @@ sec_uart1: serial@f0612000 {
reg-io-width = <4>;
status = "reserved"; /* for TEE usage */
};
+
+ eth0: ethernet@cac80000 {
+ compatible = "spacemit,k1-emac";
+ reg = <0x0 0xcac80000 0x0 0x420>;
+ clocks = <&syscon_apmu CLK_EMAC0_BUS>;
+ interrupts = <131>;
+ mac-address = [ 00 00 00 00 00 00 ];
+ resets = <&syscon_apmu RESET_EMAC0>;
+ spacemit,apmu = <&syscon_apmu 0x3e4>;
+ status = "disabled";
+ };
+
+ eth1: ethernet@cac81000 {
+ compatible = "spacemit,k1-emac";
+ reg = <0x0 0xcac81000 0x0 0x420>;
+ clocks = <&syscon_apmu CLK_EMAC1_BUS>;
+ interrupts = <133>;
+ mac-address = [ 00 00 00 00 00 00 ];
+ resets = <&syscon_apmu RESET_EMAC1>;
+ spacemit,apmu = <&syscon_apmu 0x3ec>;
+ status = "disabled";
+ };
};
};
--
2.49.0