[PATCH v5 0/5] Add initial Milk-V Duo S board support

[PATCH v5 0/5] Add initial Milk-V Duo S board support

[Joshua Milas]

This adds an initial device tree for the Milk-V Duo S board
with support for reading from the SD card and network over
Ethernet. This is continued work from Michael Opdenacker's
v6 series [1] on the ARM64 and RISCV side. It has been tested
with ARM64 and RISCV64 to boot from an SD card, have networking,
and read I2C slave devices over i2c4.

---

v5
- Fixes spaces at beginning of line in &usb node of DTS

v4: https://lore.kernel.org/sophgo/20260328173450.219664-2-josh.milas@gmail.com/
- Rebased to latest sophogo/for-next
- Added usb node to arm64 and riscv DTS
- Removed sg200x link in commit messages
- Added missing change to v3 and removed link from v2

v3: https://lore.kernel.org/sophgo/20251029001052.36774-1-josh.milas@gmail.com/
- Added sg2000 interrupt controller and timer to documentation
- Added sg2000.dtsi for RISCV and moved DTS over to use it
- remove devices from DTS's to match what is available in the
  default pinmux config. spi0-2, i2c0-3, uart1-4
- Added i2c4 and spi3 aliases
- Removed milkv,duo-s from sophgo,cv1812h in documentation

v2: https://lore.kernel.org/sophgo/20251011014811.28521-1-josh.milas@gmail.com/
- Made new entry in docs to avoid DTC error
- "Milk-V DuoS" -> "Milk-V Duo S"
- Sorting of aliases
- Added uart*, emmc, mdio, gmac0, i2c*, spi*, dmac, saradc
  to device tree matching what is available on the pinout
- Removal of 'no-mmc' and 'no-sdio' for sdhci0 as it works without
- Added riscv device tree

v1: https://lore.kernel.org/sophgo/20250927173619.89768-1-josh.milas@gmail.com/

Link: https://lore.kernel.org/linux-riscv/20240421055710.143617-1-michael.opdenacker@bootlin.com/ [1]

Joshua Milas (5):
  dt-bindings: soc: sophgo: add Milk-V Duo S board compatibles
  arm64: dts: sophgo: add initial Milk-V Duo S board support
  dt-bindings: soc: sophgo: add sg2000 plic and clint documentation
  riscv64: dts: sophgo: add SG2000 dtsi
  riscv64: dts: sophgo: add initial Milk-V Duo S board support

 .../sifive,plic-1.0.0.yaml                    |  1 +
 .../bindings/soc/sophgo/sophgo.yaml           |  4 +
 .../bindings/timer/sifive,clint.yaml          |  1 +
 arch/arm64/boot/dts/sophgo/Makefile           |  1 +
 .../boot/dts/sophgo/sg2000-milkv-duo-s.dts    | 85 +++++++++++++++++++
 arch/riscv/boot/dts/sophgo/Makefile           |  1 +
 .../boot/dts/sophgo/sg2000-milkv-duo-s.dts    | 85 +++++++++++++++++++
 arch/riscv/boot/dts/sophgo/sg2000.dtsi        | 53 ++++++++++++
 8 files changed, 231 insertions(+)
 create mode 100644 arch/arm64/boot/dts/sophgo/sg2000-milkv-duo-s.dts
 create mode 100644 arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts
 create mode 100644 arch/riscv/boot/dts/sophgo/sg2000.dtsi


base-commit: 9aa6068586a9b4cd34cf04f8dee72a7283ab4ae4
-- 
2.53.0

[PATCH v5 1/5] dt-bindings: soc: sophgo: add Milk-V Duo S board compatibles

[Joshua Milas]

Document the compatible strings for the Milk-V Duo S board [1]
which uses the SOPHGO SG2000 SoC.

Link: https://milkv.io/duo-s [1]

Signed-off-by: Joshua Milas <josh.milas@gmail.com>
---
 Documentation/devicetree/bindings/soc/sophgo/sophgo.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/sophgo/sophgo.yaml b/Documentation/devicetree/bindings/soc/sophgo/sophgo.yaml
index 1c502618de51f..0b6fbab48b743 100644
--- a/Documentation/devicetree/bindings/soc/sophgo/sophgo.yaml
+++ b/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
-- 
2.53.0

[PATCH v5 2/5] arm64: dts: sophgo: add initial Milk-V Duo S board support

[Joshua Milas]

Adds initial arm64 support for the Milk-V Duo S board
[1] making it possible to boot Linux to the command line.

Link: https://milkv.io/duo-s [1]

Signed-off-by: Joshua Milas <josh.milas@gmail.com>
---
 arch/arm64/boot/dts/sophgo/Makefile           |  1 +
 .../boot/dts/sophgo/sg2000-milkv-duo-s.dts    | 85 +++++++++++++++++++
 2 files changed, 86 insertions(+)
 create mode 100644 arch/arm64/boot/dts/sophgo/sg2000-milkv-duo-s.dts

diff --git a/arch/arm64/boot/dts/sophgo/Makefile b/arch/arm64/boot/dts/sophgo/Makefile
index 94f52cd7d994b..68aace728223a 100644
--- a/arch/arm64/boot/dts/sophgo/Makefile
+++ b/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
diff --git a/arch/arm64/boot/dts/sophgo/sg2000-milkv-duo-s.dts b/arch/arm64/boot/dts/sophgo/sg2000-milkv-duo-s.dts
new file mode 100644
index 0000000000000..8632470f43ab0
--- /dev/null
+++ b/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";
+};
+
-- 
2.53.0

[PATCH v5 3/5] dt-bindings: soc: sophgo: add sg2000 plic and clint documentation

[Joshua Milas]

Document the compatible strings for the sg2000 interrupt
controller and timer.

Signed-off-by: Joshua Milas <josh.milas@gmail.com>
---
 .../bindings/interrupt-controller/sifive,plic-1.0.0.yaml         | 1 +
 Documentation/devicetree/bindings/timer/sifive,clint.yaml        | 1 +
 2 files changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
index e0267223887ec..decc43df3c839 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
+++ b/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
diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
index 3bab40500df9b..54266b3c2a185 100644
--- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
+++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
@@ -50,6 +50,7 @@ properties:
               - allwinner,sun20i-d1-clint
               - sophgo,cv1800b-clint
               - sophgo,cv1812h-clint
+              - sophgo,sg2000-clint
               - sophgo,sg2002-clint
               - thead,th1520-clint
           - const: thead,c900-clint
-- 
2.53.0

[PATCH v5 4/5] riscv64: dts: sophgo: add SG2000 dtsi

[Joshua Milas]

Adds sg2000.dtsi on the RISCV side.

Signed-off-by: Joshua Milas <josh.milas@gmail.com>
---
 arch/riscv/boot/dts/sophgo/sg2000.dtsi | 53 ++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 arch/riscv/boot/dts/sophgo/sg2000.dtsi

diff --git a/arch/riscv/boot/dts/sophgo/sg2000.dtsi b/arch/riscv/boot/dts/sophgo/sg2000.dtsi
new file mode 100644
index 0000000000000..412adacc00576
--- /dev/null
+++ b/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>;
+		};
+	};
+};
-- 
2.53.0

[PATCH v5 5/5] riscv64: dts: sophgo: add initial Milk-V Duo S board support

[Joshua Milas]

This adds initial riscv support for the Milk-V Duo S board
[1] making it possible to boot Linux to the command line.

Link: https://milkv.io/duo-s [1]

Signed-off-by: Joshua Milas <josh.milas@gmail.com>
---
 arch/riscv/boot/dts/sophgo/Makefile           |  1 +
 .../boot/dts/sophgo/sg2000-milkv-duo-s.dts    | 85 +++++++++++++++++++
 2 files changed, 86 insertions(+)
 create mode 100644 arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts

diff --git a/arch/riscv/boot/dts/sophgo/Makefile b/arch/riscv/boot/dts/sophgo/Makefile
index 6f65526d4193b..58cc6b70d8de4 100644
--- a/arch/riscv/boot/dts/sophgo/Makefile
+++ b/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
diff --git a/arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts b/arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts
new file mode 100644
index 0000000000000..8632470f43ab0
--- /dev/null
+++ b/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";
+};
+
-- 
2.53.0

Re: [PATCH v5 1/5] dt-bindings: soc: sophgo: add Milk-V Duo S board compatibles

[Krzysztof Kozlowski]

On Fri, Apr 03, 2026 at 07:15:12AM -0400, Joshua Milas wrote:
> Document the compatible strings for the Milk-V Duo S board [1]
> which uses the SOPHGO SG2000 SoC.
> 
> Link: https://milkv.io/duo-s [1]
> 
> Signed-off-by: Joshua Milas <josh.milas@gmail.com>

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof

Re: [PATCH v5 3/5] dt-bindings: soc: sophgo: add sg2000 plic and clint documentation

[Krzysztof Kozlowski]

On Fri, Apr 03, 2026 at 07:15:14AM -0400, Joshua Milas wrote:
> Document the compatible strings for the sg2000 interrupt
> controller and timer.
> 
> Signed-off-by: Joshua Milas <josh.milas@gmail.com>
> ---
>  .../bindings/interrupt-controller/sifive,plic-1.0.0.yaml         | 1 +
>  Documentation/devicetree/bindings/timer/sifive,clint.yaml        | 1 +
>  2 files changed, 2 insertions(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof

Re: [PATCH v5 4/5] riscv64: dts: sophgo: add SG2000 dtsi

[Gui-Dong Han]

On Fri, Apr 3, 2026 at 7:16 PM Joshua Milas <josh.milas@gmail.com> wrote:
>
> Adds sg2000.dtsi on the RISCV side.
>
> Signed-off-by: Joshua Milas <josh.milas@gmail.com>

Tested-by: Gui-Dong Han <hanguidong02@gmail.com>
Reviewed-by: Gui-Dong Han <hanguidong02@gmail.com>

> ---
>  arch/riscv/boot/dts/sophgo/sg2000.dtsi | 53 ++++++++++++++++++++++++++
>  1 file changed, 53 insertions(+)
>  create mode 100644 arch/riscv/boot/dts/sophgo/sg2000.dtsi
>
> diff --git a/arch/riscv/boot/dts/sophgo/sg2000.dtsi b/arch/riscv/boot/dts/sophgo/sg2000.dtsi
> new file mode 100644
> index 0000000000000..412adacc00576
> --- /dev/null
> +++ b/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>;
> +               };
> +       };
> +};
> --
> 2.53.0
>

Re: [PATCH v5 5/5] riscv64: dts: sophgo: add initial Milk-V Duo S board support

[Gui-Dong Han]

On Fri, Apr 3, 2026 at 7:16 PM Joshua Milas <josh.milas@gmail.com> wrote:
>
> This adds initial riscv support for the Milk-V Duo S board
> [1] making it possible to boot Linux to the command line.
>
> Link: https://milkv.io/duo-s [1]
>
> Signed-off-by: Joshua Milas <josh.milas@gmail.com>

Great work, thanks Joshua! I really like this board.

I encountered the same issue Michael Opdenacker saw in v4, but
enabling the MDIO-related configs resolved it.

I'll keep using and testing this series and provide further feedback
if anything comes up. Next, I plan to test the arm64 side and will
also try developing an efuse driver.

Tested-by: Gui-Dong Han <hanguidong02@gmail.com>
Reviewed-by: Gui-Dong Han <hanguidong02@gmail.com>

> ---
>  arch/riscv/boot/dts/sophgo/Makefile           |  1 +
>  .../boot/dts/sophgo/sg2000-milkv-duo-s.dts    | 85 +++++++++++++++++++
>  2 files changed, 86 insertions(+)
>  create mode 100644 arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts
>
> diff --git a/arch/riscv/boot/dts/sophgo/Makefile b/arch/riscv/boot/dts/sophgo/Makefile
> index 6f65526d4193b..58cc6b70d8de4 100644
> --- a/arch/riscv/boot/dts/sophgo/Makefile
> +++ b/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
> diff --git a/arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts b/arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts
> new file mode 100644
> index 0000000000000..8632470f43ab0
> --- /dev/null
> +++ b/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";
> +};
> +
> --
> 2.53.0
>

Re: [PATCH v5 5/5] riscv64: dts: sophgo: add initial Milk-V Duo S board support

[Michael Opdenacker]

Joshua, Gui-Dong

(my apologies for my previous-email with HTML content... bad default 
Thunderbird settings!

On 4/21/26 6:13 PM, Gui-Dong Han wrote:
> On Fri, Apr 3, 2026 at 7:16 PM Joshua Milas <josh.milas@gmail.com> wrote:
>> This adds initial riscv support for the Milk-V Duo S board
>> [1] making it possible to boot Linux to the command line.
>>
>> Link: https://milkv.io/duo-s [1]
>>
>> Signed-off-by: Joshua Milas <josh.milas@gmail.com>
> Great work, thanks Joshua! I really like this board.
>
> I encountered the same issue Michael Opdenacker saw in v4, but
> enabling the MDIO-related configs resolved it.
>
> I'll keep using and testing this series and provide further feedback
> if anything comes up. Next, I plan to test the arm64 side and will
> also try developing an efuse driver.
>
> Tested-by: Gui-Dong Han <hanguidong02@gmail.com>
> Reviewed-by: Gui-Dong Han <hanguidong02@gmail.com>

What about submitting a new iteration of your patchset? I guess the last 
one was too close to the merge window to make it, but if you submit a 
new version not too late and review it quickly enough, we could make it 
this time.

Don't hesitate to let us know if you need help (happy to post the new 
iteration if you don't have time).

Thanks in advance
Cheers
Michael.

-- 
Root Commit
Embedded Linux Training and Consulting
https://rootcommit.com