riscv: dts: spacemit: Add Ethernet support for K1

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@iscas.ac.cn>
Reviewed-by: Yixun Lan <dlan@gentoo.org>
Link: https://patch.msgid.link/20250914-net-k1-emac-v12-3-65b31b398f44@iscas.ac.cn
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
index 3810557374228100be7adab58cd785c72e6d4aed..aff19c86d5ff381881016eaa87fc4809da65b50e 100644 (file)
--- 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 (file)
--- a/arch/riscv/boot/dts/spacemit/k1.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1.dtsi
@@ -805,6 +805,28 @@
                        #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 {