[PATCH v2 0/6] riscv: dts: spacemit: enable more devices on Milk-V Jupiter

[PATCH v2 0/6] riscv: dts: spacemit: enable more devices on Milk-V Jupiter

[Aurelien Jarno]

This patchset improves support of the Milk-V Jupiter board by enabling
more devices. Most notably the NOR flash (useful for upgrading the
bootloader), the USB 3 ports and the PCIe ports.

It was inspired by the Banana Pi F3 device tree file. It is based
against the k1/dt-for-next branch and does not have any other
dependency.


Changes between version 1 and version 2:
 - Collect Reviewed-by:
 - Remove bootph-pre-ram property from SPI NOR flash
 - Mention that the fast read opcodes is marked as supported in the SPI NOR flash datasheet
 - Fix typo in the description of patch 6

Version 1 of this series is available here:
  https://lore.kernel.org/lkml/20260322203356.2206927-1-aurelien@aurel32.net


Aurelien Jarno (6):
  riscv: dts: spacemit: add LEDs for Milk-V Jupiter board
  riscv: dts: spacemit: add 24c04 eeprom on Milk-V Jupiter
  riscv: dts: spacemit: add i2c aliases on Milk-V Jupiter
  riscv: dts: spacemit: enable QSPI and add SPI NOR on Milk-V Jupiter
  riscv: dts: spacemit: enable USB 3 ports on Milk-V Jupiter
  riscv: dts: spacemit: enable PCIe ports on Milk-V Jupiter

 .../boot/dts/spacemit/k1-milkv-jupiter.dts    | 188 +++++++++++++++++-
 1 file changed, 187 insertions(+), 1 deletion(-)

-- 
2.51.0

[PATCH v2 1/6] riscv: dts: spacemit: add LEDs for Milk-V Jupiter board

[Aurelien Jarno]

The Milk-V Jupiter board provides support for two LEDs through the front
panel header. The "Power LED" indicates the system is running, and the
"HDD LED" shows disk activity. Configure the corresponding LED triggers
accordingly.

Caveats:
- The LEDs are driven through a 4.7k series resistor, making them
  quite faint.
- The disk activity trigger requires a storage controller on the M.2 or
  PCIe interface. That said, it matches the purpose and the vendor
  kernel.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
 .../boot/dts/spacemit/k1-milkv-jupiter.dts      | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

v2:
 - Collect Reviewed-by:


diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
index 9959c8023ece0..3cd83c5924e4f 100644
--- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
@@ -21,6 +21,23 @@ chosen {
 		stdout-path = "serial0";
 	};
 
+	leds {
+		compatible = "gpio-leds";
+
+		led1 {
+			label = "pwr-led";
+			gpios = <&gpio K1_GPIO(96) GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "default-on";
+			default-state = "on";
+		};
+
+		led2 {
+			label = "hdd-led";
+			gpios = <&gpio K1_GPIO(92) GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "disk-activity";
+		};
+	};
+
 	reg_dc_in: regulator-dc-in-12v {
 		compatible = "regulator-fixed";
 		regulator-name = "dc_in_12v";
-- 
2.51.0

[PATCH v2 2/6] riscv: dts: spacemit: add 24c04 eeprom on Milk-V Jupiter

[Aurelien Jarno]

The Milk-V Jupiter board includes a 24c04 eeprom on the i2c2 bus. The
eeprom contains an ONIE TLV table, which on the board I tested only
provides a product-name entry. Expose it via an onie,tlv-layout nvmem
layout.

The eeprom is marked as read-only since its contents are not supposed to
be modified.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
 .../boot/dts/spacemit/k1-milkv-jupiter.dts    | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

v2:
 - Collect Reviewed-by:

diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
index 3cd83c5924e4f..bd48208a370cf 100644
--- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
@@ -108,6 +108,28 @@ &pdma {
 	status = "okay";
 };
 
+&i2c2 {
+	pinctrl-0 = <&i2c2_0_cfg>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	eeprom@50 {
+		compatible = "atmel,24c04";
+		reg = <0x50>;
+		vcc-supply = <&buck3_1v8>; /* EEPROM_VCC18 */
+		pagesize = <16>;
+		read-only;
+		size = <512>;
+
+		nvmem-layout {
+			compatible = "onie,tlv-layout";
+
+			product-name {
+			};
+		};
+	};
+};
+
 &i2c8 {
 	pinctrl-0 = <&i2c8_cfg>;
 	pinctrl-names = "default";
-- 
2.51.0

[PATCH v2 3/6] riscv: dts: spacemit: add i2c aliases on Milk-V Jupiter

[Aurelien Jarno]

Add i2c aliases for i2c2 and i2c8 on Milk-V Jupiter. This is useful to
keep a stable number for the /dev entries after loading the i2c-dev
module.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
 arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts | 2 ++
 1 file changed, 2 insertions(+)

v2:
 - Collect Reviewed-by:

diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
index bd48208a370cf..836311c3f035c 100644
--- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
@@ -15,6 +15,8 @@ aliases {
 		ethernet0 = &eth0;
 		ethernet1 = &eth1;
 		serial0 = &uart0;
+		i2c2 = &i2c2;
+		i2c8 = &i2c8;
 	};
 
 	chosen {
-- 
2.51.0

[PATCH v2 4/6] riscv: dts: spacemit: enable QSPI and add SPI NOR on Milk-V Jupiter

[Aurelien Jarno]

Add the QSPI controller node for the Milk-V Jupiter board and describe
the attached SPI NOR flash (GD25Q64E).

The flash supports a frequency up to 133MHz (80 MHz for reads), and the
SoC supports a frequency up to 104 MHz. However tests have shown that
the flash is not reliably detected above 26.5 MHz, consistent with
frequency used in the vendor kernel. Therefore, use this frequency.

The m25p,fast-read properties is taken from the vendor kernel, and the
GD25Q64E datasheet confirms tha the fast read opcodes are supported.

Add a corresponding flash partition layout, matching the layout and the
names used in the vendor U-Boot.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
 .../boot/dts/spacemit/k1-milkv-jupiter.dts    | 43 ++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

v2:
 - Remove bootph-pre-ram property from SPI NOR flash and update the patch description accordingly
 - Mention that the fast read opcodes is marked as supported in the datasheet
 - Collect Reviewed-by:

diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
index 836311c3f035c..bac6438c67532 100644
--- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
@@ -173,7 +173,7 @@ buck3_1v8: buck3 {
 				regulator-always-on;
 			};
 
-			buck4 {
+			buck4_3v3: buck4 {
 				regulator-min-microvolt = <500000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-ramp-delay = <5000>;
@@ -256,6 +256,47 @@ dldo7 {
 	};
 };
 
+&qspi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&qspi_cfg>;
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <26500000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <4>;
+		vcc-supply = <&buck4_3v3>; /* QSPI_VCC1833 */
+		m25p,fast-read;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			bootinfo@0 {
+				reg = <0x0 0x10000>;
+			};
+			private@10000 {
+				reg = <0x10000 0x10000>;
+			};
+			fsbl@20000 {
+				reg = <0x20000 0x40000>;
+			};
+			env@60000 {
+				reg = <0x60000 0x10000>;
+			};
+			opensbi@70000 {
+				reg = <0x70000 0x30000>;
+			};
+			uboot@a00000 {
+				reg = <0xa0000 0x760000>;
+			};
+		};
+	};
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_2_cfg>;
-- 
2.51.0

[PATCH v2 5/6] riscv: dts: spacemit: enable USB 3 ports on Milk-V Jupiter

[Aurelien Jarno]

Enable the DWC3 USB 3.0 controller (USB#2 port in the K1 datasheet) and
its associated combo_phy (USB 3 PHY) and usbphy2 (USB 2 PHY) on the
Milk-V Jupiter board.

The board uses a VLI VL817 hub, providing four ports. Two are routed to
the 3.0 type-A connectors, and two to the F_USB3 front USB header. The
hub requires two separate 5V power supplies: one for the hub itself and
one for the USB connectors. Add an always-on regulator sourcing 5V from
the DC-IN input, along with two GPIO-controlled fixed regulators to
manage the hub and connectors power supplies.

Note that the board also provides four USB 2.0 ports (two via type-A
connectors and two via the F_USB2 front USB header), but these are
handled by a different controller (USB#1 port in the K1 datasheet).

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
 .../boot/dts/spacemit/k1-milkv-jupiter.dts    | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)

v2:
 - Collect Reviewed-by:

diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
index bac6438c67532..8eeaf2631b719 100644
--- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
@@ -58,6 +58,41 @@ reg_vcc_4v: regulator-vcc-4v {
 		regulator-always-on;
 		vin-supply = <&reg_dc_in>;
 	};
+
+	reg_vcc_5v: regulator-vcc-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-boot-on;
+		regulator-always-on;
+		vin-supply = <&reg_dc_in>;
+	};
+
+	regulator-usb3-vbus-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "USB30_VBUS";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		vin-supply = <&reg_vcc_5v>;
+		gpio = <&gpio K1_GPIO(97) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	usb3_hub_5v: regulator-usb3-hub-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "USB30_HUB";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&reg_vcc_5v>;
+		gpio = <&gpio K1_GPIO(123) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+};
+
+&combo_phy {
+	status = "okay";
 };
 
 &eth0 {
@@ -302,3 +337,30 @@ &uart0 {
 	pinctrl-0 = <&uart0_2_cfg>;
 	status = "okay";
 };
+
+&usbphy2 {
+	status = "okay";
+};
+
+&usb_dwc3 {
+	dr_mode = "host";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	hub_2_0: hub@1 {
+		compatible = "usb2109,2817";
+		reg = <0x1>;
+		vdd-supply = <&usb3_hub_5v>;
+		peer-hub = <&hub_3_0>;
+		reset-gpios = <&gpio K1_GPIO(124) GPIO_ACTIVE_LOW>;
+	};
+
+	hub_3_0: hub@2 {
+		compatible = "usb2109,817";
+		reg = <0x2>;
+		vdd-supply = <&usb3_hub_5v>;
+		peer-hub = <&hub_2_0>;
+		reset-gpios = <&gpio K1_GPIO(124) GPIO_ACTIVE_LOW>;
+	};
+};
-- 
2.51.0

[PATCH v2 6/6] riscv: dts: spacemit: enable PCIe ports on Milk-V Jupiter

[Aurelien Jarno]

Enable the two PCIe controller along with and their associated PHY. They
are routed to the M.2 M-key connector and to the PCIe x8 slot.

Add an always-on regulator sourcing 3.3V from the DC-IN input, to power
the PCIe ports.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
 .../boot/dts/spacemit/k1-milkv-jupiter.dts    | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)

v2:
 - Collect Reviewed-by:
 - Fix a typo in the description

diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
index 8eeaf2631b719..afaad59e6bce2 100644
--- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
@@ -40,6 +40,16 @@ led2 {
 		};
 	};
 
+	pcie_vcc_3v3: regulator-pcie-vcc3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "pcie_vcc3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+		vin-supply = <&reg_dc_in>;
+	};
+
 	reg_dc_in: regulator-dc-in-12v {
 		compatible = "regulator-fixed";
 		regulator-name = "dc_in_12v";
@@ -291,6 +301,38 @@ dldo7 {
 	};
 };
 
+&pcie1_phy {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie1_3_cfg>;
+	status = "okay";
+};
+
+&pcie1_port {
+	phys = <&pcie1_phy>;
+	vpcie3v3-supply = <&pcie_vcc_3v3>;
+};
+
+&pcie1 {
+	vpcie3v3-supply = <&pcie_vcc_3v3>;
+	status = "okay";
+};
+
+&pcie2_phy {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie2_4_cfg>;
+	status = "okay";
+};
+
+&pcie2_port {
+	phys = <&pcie2_phy>;
+	vpcie3v3-supply = <&pcie_vcc_3v3>;
+};
+
+&pcie2 {
+	vpcie3v3-supply = <&pcie_vcc_3v3>;
+	status = "okay";
+};
+
 &qspi {
 	pinctrl-names = "default";
 	pinctrl-0 = <&qspi_cfg>;
-- 
2.51.0

Re: [PATCH v2 0/6] riscv: dts: spacemit: enable more devices on Milk-V Jupiter

[Yixun Lan]

Hi Aurelien,

On 19:35 Thu 26 Mar     , Aurelien Jarno wrote:
> This patchset improves support of the Milk-V Jupiter board by enabling
> more devices. Most notably the NOR flash (useful for upgrading the
> bootloader), the USB 3 ports and the PCIe ports.
> 
> It was inspired by the Banana Pi F3 device tree file. It is based
> against the k1/dt-for-next branch and does not have any other
> dependency.
> 
> 
> Changes between version 1 and version 2:
>  - Collect Reviewed-by:
>  - Remove bootph-pre-ram property from SPI NOR flash
>  - Mention that the fast read opcodes is marked as supported in the SPI NOR flash datasheet
>  - Fix typo in the description of patch 6
> 
> Version 1 of this series is available here:
>   https://lore.kernel.org/lkml/20260322203356.2206927-1-aurelien@aurel32.net
> 
> 
> Aurelien Jarno (6):
>   riscv: dts: spacemit: add LEDs for Milk-V Jupiter board
>   riscv: dts: spacemit: add 24c04 eeprom on Milk-V Jupiter
>   riscv: dts: spacemit: add i2c aliases on Milk-V Jupiter
>   riscv: dts: spacemit: enable QSPI and add SPI NOR on Milk-V Jupiter
>   riscv: dts: spacemit: enable USB 3 ports on Milk-V Jupiter
>   riscv: dts: spacemit: enable PCIe ports on Milk-V Jupiter

For the series

Reviewed-by: Yixun Lan <dlan@kernel.org>

-- 
Yixun Lan (dlan)

Re: [PATCH v2 0/6] riscv: dts: spacemit: enable more devices on Milk-V Jupiter

[Yixun Lan]

On Thu, 26 Mar 2026 19:35:28 +0100, Aurelien Jarno wrote:
> This patchset improves support of the Milk-V Jupiter board by enabling
> more devices. Most notably the NOR flash (useful for upgrading the
> bootloader), the USB 3 ports and the PCIe ports.
> 
> It was inspired by the Banana Pi F3 device tree file. It is based
> against the k1/dt-for-next branch and does not have any other
> dependency.
> 
> [...]

Applied, thanks!

[1/6] riscv: dts: spacemit: add LEDs for Milk-V Jupiter board
      https://github.com/spacemit-com/linux/commit/334e64abacd3df4005de80b082d0dbf02b453c76
[2/6] riscv: dts: spacemit: add 24c04 eeprom on Milk-V Jupiter
      https://github.com/spacemit-com/linux/commit/77156216f1d0f57e1cfce3452410db20468edca4
[3/6] riscv: dts: spacemit: add i2c aliases on Milk-V Jupiter
      https://github.com/spacemit-com/linux/commit/7af5edec73d5d69618541f91600adeb6f35b7d17
[4/6] riscv: dts: spacemit: enable QSPI and add SPI NOR on Milk-V Jupiter
      https://github.com/spacemit-com/linux/commit/2829823956f0f590f5c6b4eafed2dab7a96f69b3
[5/6] riscv: dts: spacemit: enable USB 3 ports on Milk-V Jupiter
      https://github.com/spacemit-com/linux/commit/dce01d8585a22f708b5f1eb621cacd9878258ac8
[6/6] riscv: dts: spacemit: enable PCIe ports on Milk-V Jupiter
      https://github.com/spacemit-com/linux/commit/2b8bd26bbfcdeb1a06127dcd8f9101080133f2a1

Best regards,
-- 
Yixun Lan <dlan@kernel.org>