[PATCH net-next v12 3/5] riscv: dts: spacemit: Add Ethernet support for K1
From: Vivian Wang <hidden>
Date: 2025-09-14 04:24:19
Also in:
linux-devicetree, linux-riscv, lkml, spacemit
Subsystem:
risc-v architecture, risc-v spacemit soc support, the rest · Maintainers:
Paul Walmsley, Palmer Dabbelt, Albert Ou, Yixun Lan, Linus Torvalds
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 <redacted> Reviewed-by: Yixun Lan <redacted> --- 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 3810557374228100be7adab58cd785c72e6d4aed..aff19c86d5ff381881016eaa87fc4809da65b50e 100644
--- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi@@ -11,6 +11,54 @@ #define K1_GPIO(x) (x / 32) (x % 32) &pinctrl { + 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>; + }; + }; + uart0_2_cfg: uart0-2-cfg { uart0-2-pins { pinmux = <K1_PADCONF(68, 2)>,
diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi
index abde8bb07c95c5a745736a2dd6f0c0e0d7c696e4..7b2ac3637d6d9fa1929418cc68aa25c57850ac7f 100644
--- a/arch/riscv/boot/dts/spacemit/k1.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1.dtsi@@ -805,6 +805,28 @@ network-bus { #size-cells = <2>; dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>, <0x0 0x80000000 0x1 0x00000000 0x0 0x80000000>; + + 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"; + }; }; pcie-bus {
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2.50.1