[PATCH 0/2] Initial support for 100ask CanMV-K230 DshanPi

[PATCH 0/2] Initial support for 100ask CanMV-K230 DshanPi

[Jiayu Du]

This series adds initial support for the 100ask CanMV-K230 DshanPi
board based on Canaan K230 RISC-V SoC. There is a module on this
development board.

The board and module are documented, the basic board/module devicetrees
are added.

This series is based on the K230 clock series[1] and the patch 3 of the
k230 pinctrl series[2].

Link:  https://lore.kernel.org/all/20251127-b4-k230-clk-v9-0-3aa09e17faf5@zohomail.com/ [1]
Link:  https://lore.kernel.org/all/20240926-k230-pinctrl-v2-3-a9a36fba4b34@163.com/ [2]

Jiayu Du (2):
  dt-bindings: riscv: canaan: add 100ask K230 boards compatible strings
  riscv: dts: canaan: Add initial dshanpi board DT files

 .../devicetree/bindings/riscv/canaan.yaml     |  5 ++
 arch/riscv/boot/dts/canaan/Makefile           |  1 +
 .../boot/dts/canaan/k230-canmv-dshanpi.dts    | 82 +++++++++++++++++++
 .../dts/canaan/k230-canmv-module-dshanpi.dtsi | 30 +++++++
 4 files changed, 118 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

-- 
2.52.0

[PATCH 1/2] dt-bindings: riscv: canaan: add 100ask K230 boards compatible strings

[Jiayu Du]

K230 CANMV DSHANPI is a development board produced by 100ASK.

Add compatible string for the board and its SoM.

Signed-off-by: Jiayu Du <jiayu.riscv@isrc.iscas.ac.cn>
---

The hardware details are available here[1].

[1]: https://github.com/100askTeam/eLinuxAI-TrainingDocs/blob/master/docs/CanaanK230/part1/01-Introductionhardwareresources.md

 Documentation/devicetree/bindings/riscv/canaan.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/riscv/canaan.yaml b/Documentation/devicetree/bindings/riscv/canaan.yaml
index f9854ff43ac6..b9f095bc6021 100644
--- a/Documentation/devicetree/bindings/riscv/canaan.yaml
+++ b/Documentation/devicetree/bindings/riscv/canaan.yaml
@@ -48,6 +48,11 @@ properties:
               - canaan,k230-usip-lp3-evb
           - const: canaan,kendryte-k230
 
+        items:
+          - const: 100ask,canmv-k230-dshanpi
+          - const: 100ask,canmv-k230-module-dshanpi
+          - const: canaan,kendryte-k230
+
 additionalProperties: true
 
 ...
-- 
2.52.0

[PATCH 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@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@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@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@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

Re: [PATCH 1/2] dt-bindings: riscv: canaan: add 100ask K230 boards compatible strings

[Jiayu Du]

On Mon, Dec 29, 2025 at 02:13:17PM +0800, Jiayu Du wrote:
> K230 CANMV DSHANPI is a development board produced by 100ASK.
> 
> Add compatible string for the board and its SoM.
> 
> Signed-off-by: Jiayu Du <jiayu.riscv@isrc.iscas.ac.cn>
> ---
> 
> The hardware details are available here[1].
> 
> [1]: https://github.com/100askTeam/eLinuxAI-TrainingDocs/blob/master/docs/CanaanK230/part1/01-Introductionhardwareresources.md
> 
>  Documentation/devicetree/bindings/riscv/canaan.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/riscv/canaan.yaml b/Documentation/devicetree/bindings/riscv/canaan.yaml
> index f9854ff43ac6..b9f095bc6021 100644
> --- a/Documentation/devicetree/bindings/riscv/canaan.yaml
> +++ b/Documentation/devicetree/bindings/riscv/canaan.yaml
> @@ -48,6 +48,11 @@ properties:
>                - canaan,k230-usip-lp3-evb
>            - const: canaan,kendryte-k230
>  
> +        items:

Sorry, I didn't test the bindings before sending it. Now I realize this.
It's my fault. There is a minus sign missing before items.

> +          - const: 100ask,canmv-k230-dshanpi
> +          - const: 100ask,canmv-k230-module-dshanpi
> +          - const: canaan,kendryte-k230
> +
>  additionalProperties: true
>  
>  ...
> -- 
> 2.52.0
>