[PATCH v2 2/2] riscv: dts: canaan: Add initial dshanpi board DT files

[Jiayu Du]

Add board devicetree for 100ask K230 dashanpi, and also the SoM
device utilized by the board. UART0 is enabled as the default
console.

Signed-off-by: Jiayu Du <jiayu.riscv at isrc.iscas.ac.cn>
---
 arch/riscv/boot/dts/canaan/Makefile           |  1 +
 .../boot/dts/canaan/k230-canmv-dshanpi.dts    | 82 +++++++++++++++++++
 .../dts/canaan/k230-canmv-module-dshanpi.dtsi | 30 +++++++
 3 files changed, 113 insertions(+)
 create mode 100644 arch/riscv/boot/dts/canaan/k230-canmv-dshanpi.dts
 create mode 100644 arch/riscv/boot/dts/canaan/k230-canmv-module-dshanpi.dtsi

diff --git a/arch/riscv/boot/dts/canaan/Makefile b/arch/riscv/boot/dts/canaan/Makefile
index 7d54ea5c6f3d..89cb64bde440 100644
--- a/arch/riscv/boot/dts/canaan/Makefile
+++ b/arch/riscv/boot/dts/canaan/Makefile
@@ -2,6 +2,7 @@
 dtb-$(CONFIG_ARCH_CANAAN) += canaan_kd233.dtb
 dtb-$(CONFIG_ARCH_CANAAN) += k210_generic.dtb
 dtb-$(CONFIG_ARCH_CANAAN) += k230-canmv.dtb
+dtb-$(CONFIG_ARCH_CANAAN) += k230-canmv-dshanpi.dtb
 dtb-$(CONFIG_ARCH_CANAAN) += k230-evb.dtb
 dtb-$(CONFIG_ARCH_CANAAN) += sipeed_maix_bit.dtb
 dtb-$(CONFIG_ARCH_CANAAN) += sipeed_maix_dock.dtb
diff --git a/arch/riscv/boot/dts/canaan/k230-canmv-dshanpi.dts b/arch/riscv/boot/dts/canaan/k230-canmv-dshanpi.dts
new file mode 100644
index 000000000000..4f95b534ee87
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/k230-canmv-dshanpi.dts
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2025 Jiayu Du <jiayu.riscv at isrc.iscas.ac.cn>
+ */
+
+/dts-v1/;
+
+#include "k230-canmv-module-dshanpi.dtsi"
+
+/ {
+	model = "100ask CanMV-K230-dshanpi";
+	compatible = "100ask,canmv-k230-dshanpi",
+		     "100ask,canmv-k230-module-dshanpi",
+		     "canaan,kendryte-k230";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	vdd_5v: regulator-vdd-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	vdd_3v3: regulator-vdd-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vdd_5v>;
+	};
+
+	vdd_1v8: regulator-vdd-1v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_1v8";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vdd_5v>;
+	};
+};
+
+&pinctrl {
+	uart0_pins: uart0-pins {
+		uart0-txd-cfg {
+			pinmux = <K230_PINMUX(38, 1)>;
+			slew-rate = <0>;
+			drive-strength = <7>;
+			power-source = <K230_MSC_1V8>;
+			output-enable;
+			bias-disable;
+			input-schmitt-enable;
+		};
+
+		uart0-rxd-cfg {
+			pinmux = <K230_PINMUX(39, 1)>;
+			slew-rate = <0>;
+			drive-strength = <7>;
+			power-source = <K230_MSC_1V8>;
+			input-enable;
+			bias-disable;
+			input-schmitt-enable;
+		};
+	};
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins>;
+	status = "okay";
+};
diff --git a/arch/riscv/boot/dts/canaan/k230-canmv-module-dshanpi.dtsi b/arch/riscv/boot/dts/canaan/k230-canmv-module-dshanpi.dtsi
new file mode 100644
index 000000000000..ed0abc68f321
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/k230-canmv-module-dshanpi.dtsi
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2025 Jiayu Du <jiayu.riscv at isrc.iscas.ac.cn>
+ */
+
+/dts-v1/;
+
+#include "k230.dtsi"
+
+/ {
+	model = "100ask CanMV-K230-Module-dshanpi";
+	compatible = "100ask,canmv-k230-module-dshanpi",
+		     "canaan,kendryte-k230";
+
+	ddr: memory at 0 {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x40000000>;
+	};
+
+	timerx_pulse_in: clock-50m {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <50000000>;
+	};
+};
+
+&sysclk {
+	clocks = <&osc24m>, <&timerx_pulse_in>;
+	clock-names = "osc24m", "timer-pulse-in";
+};
-- 
2.52.0