[PW_SID:1103374] Add initial Milk-V Duo S board support

Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml

@@ -73,6 +73,7 @@ properties:
               - allwinner,sun20i-d1-plic
               - sophgo,cv1800b-plic
               - sophgo,cv1812h-plic
+              - sophgo,sg2000-plic
               - sophgo,sg2002-plic
               - sophgo,sg2042-plic
               - sophgo,sg2044-plic

Documentation/devicetree/bindings/soc/sophgo/sophgo.yaml

@@ -31,6 +31,10 @@ properties:
               - milkv,duo-module-01-evb
           - const: milkv,duo-module-01
           - const: sophgo,sg2000
+      - items:
+          - enum:
+              - milkv,duo-s
+          - const: sophgo,sg2000
       - items:
           - enum:
               - sipeed,licheerv-nano-b

Documentation/devicetree/bindings/timer/sifive,clint.yaml

@@ -51,6 +51,7 @@ properties:
               - allwinner,sun20i-d1-clint
               - sophgo,cv1800b-clint
               - sophgo,cv1812h-clint
+              - sophgo,sg2000-clint
               - sophgo,sg2002-clint
               - thead,th1520-clint
           - const: thead,c900-clint

arch/arm64/boot/dts/sophgo/Makefile

@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_SOPHGO) += sg2000-milkv-duo-module-01-evb.dtb
+dtb-$(CONFIG_ARCH_SOPHGO) += sg2000-milkv-duo-s.dtb

arch/arm64/boot/dts/sophgo/sg2000-milkv-duo-s.dts

@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+
+/dts-v1/;
+
+#include "sg2000.dtsi"
+
+/ {
+	model = "Milk-V Duo S";
+	compatible = "milkv,duo-s", "sophgo,sg2000";
+
+	aliases {
+		i2c4 = &i2c4;
+		mmc0 = &sdhci0;
+		serial0 = &uart0;
+		spi3 = &spi3;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&osc {
+	clock-frequency = <25000000>;
+};
+
+&dmac {
+	status = "okay";
+};
+
+&emmc {
+	bus-width = <4>;
+	no-1-8-v;
+	cap-mmc-hw-reset;
+	no-sd;
+	no-sdio;
+	non-removable;
+	status = "okay";
+};
+
+&gmac0 {
+	status = "okay";
+};
+
+&i2c4 {
+	status = "okay";
+};
+
+&mdio {
+	status = "okay";
+};
+
+&saradc {
+	status = "okay";
+};
+
+&sdhci0 {
+	bus-width = <4>;
+	no-1-8-v;
+	disable-wp;
+	status = "okay";
+};
+
+&sdhci1 {
+	bus-width = <4>;
+	cap-sdio-irq;
+	no-mmc;
+	no-sd;
+	non-removable;
+	status = "okay";
+};
+
+&spi3 {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&usb {
+	dr_mode = "host";
+	status = "okay";
+};
+

arch/riscv/boot/dts/sophgo/Makefile

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_SOPHGO) += cv1800b-milkv-duo.dtb
 dtb-$(CONFIG_ARCH_SOPHGO) += cv1812h-huashan-pi.dtb
+dtb-$(CONFIG_ARCH_SOPHGO) += sg2000-milkv-duo-s.dtb
 dtb-$(CONFIG_ARCH_SOPHGO) += sg2002-licheerv-nano-b.dtb
 dtb-$(CONFIG_ARCH_SOPHGO) += sg2042-milkv-pioneer.dtb
 dtb-$(CONFIG_ARCH_SOPHGO) += sg2042-evb-v1.dtb

arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts

@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+
+/dts-v1/;
+
+#include "sg2000.dtsi"
+
+/ {
+	model = "Milk-V Duo S";
+	compatible = "milkv,duo-s", "sophgo,sg2000";
+
+	aliases {
+		i2c4 = &i2c4;
+		mmc0 = &sdhci0;
+		serial0 = &uart0;
+		spi3 = &spi3;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&osc {
+	clock-frequency = <25000000>;
+};
+
+&dmac {
+	status = "okay";
+};
+
+&emmc {
+	bus-width = <4>;
+	no-1-8-v;
+	cap-mmc-hw-reset;
+	no-sd;
+	no-sdio;
+	non-removable;
+	status = "okay";
+};
+
+&gmac0 {
+	status = "okay";
+};
+
+&i2c4 {
+	status = "okay";
+};
+
+&mdio {
+	status = "okay";
+};
+
+&saradc {
+	status = "okay";
+};
+
+&sdhci0 {
+	bus-width = <4>;
+	no-1-8-v;
+	disable-wp;
+	status = "okay";
+};
+
+&sdhci1 {
+	bus-width = <4>;
+	cap-sdio-irq;
+	no-mmc;
+	no-sd;
+	non-removable;
+	status = "okay";
+};
+
+&spi3 {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&usb {
+	dr_mode = "host";
+	status = "okay";
+};
+

arch/riscv/boot/dts/sophgo/sg2000.dtsi

@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+
+#define SOC_PERIPHERAL_IRQ(nr)	((nr) + 16)
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pinctrl/pinctrl-sg2000.h>
+#include "cv180x-cpus.dtsi"
+#include "cv180x.dtsi"
+#include "cv181x.dtsi"
+
+/ {
+	compatible = "sophgo,sg2000";
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x10000000>;
+	};
+
+	soc {
+		interrupt-parent = <&plic>;
+		dma-noncoherent;
+
+		pinctrl: pinctrl@3001000 {
+			compatible = "sophgo,sg2000-pinctrl";
+			reg = <0x03001000 0x1000>,
+			      <0x05027000 0x1000>;
+			reg-names = "sys", "rtc";
+		};
+
+		clk: clock-controller@3002000 {
+			compatible = "sophgo,sg2000-clk";
+			reg = <0x03002000 0x1000>;
+			clocks = <&osc>;
+			#clock-cells = <1>;
+		};
+
+		plic: interrupt-controller@70000000 {
+			compatible = "sophgo,sg2000-plic", "thead,c900-plic";
+			reg = <0x70000000 0x4000000>;
+			interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
+			interrupt-controller;
+			#address-cells = <0>;
+			#interrupt-cells = <2>;
+			riscv,ndev = <101>;
+		};
+
+		clint: timer@74000000 {
+			compatible = "sophgo,sg2000-clint", "thead,c900-clint";
+			reg = <0x74000000 0x10000>;
+			interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
+		};
+	};
+};