[PATCH v1 0/4] riscv: dts: starfive: Add Milk-V Mars CM (Lite) SoM

[Conor Dooley]

Emil,

Could you take a look at this please?

Cheers,
Conor.

On Thu, Jul 24, 2025 at 02:48:43AM -0700, E Shattow wrote:
> Milk-V Mars CM and Mars CM Lite System-on-Module both are based on the
> StarFive JH7110 SoC and compatible with the Raspberry Pi CM4IO Classic IO
> Board carrier. Mars CM Lite is Mars CM without the eMMC storage component
> on mmc0 and the mmc0 interface configured instead for SD Card use. The
> optional WiFi+BT chipset is connected via SDIO on the mmc1 interface that
> would otherwise be connected to an SD Card slot on the StarFive
> VisionFive2 reference design.
> 
> Add the related devicetree files for both Milk-V Mars CM and Milk-V Mars
> CM Lite describing the currently supported features, namely PMIC, UART,
> I2C, GPIO, eMMC or SD Card, WiFi+BT, QSPI Flash, and Ethernet.
> 
> Caveat with vendor AP6256 firmware files present the firmware loading is
> successful but subsequently fails IRQ wake initialization. Common GPIO
> conflicts for "WiFi" optioned boards having this module:
> 
> pwmdac_pins:
>  - AP6256: WL_REG_ON>>WIFI_REG_ON_H_GPIO33
>  - AP6256: WL_HOST_WAKE>>WIFI_WAKE_HOST_H_GPIO34
> 
> i2c2_pins:
>  - AP6256: UART_CTS_N<<UART1_RTSn_GPIO2
>  - AP6256: UART_RTS_N>>UART1_CTSn_GPIO3
> 
> i2c6_pins:
>  - AP6256: UART_RXD<<UART_TX_GPIO16
>  - AP6256: UART_TXD>>UART_RX_GPIO17
> 
> Tested successfully for basic mmc0 storage, USB, and network functionality on:
> - Milk-V Mars CM 8GB
> - Milk-V Mars CM Lite 4GB
> - Milk-V Mars CM Lite WiFi 8GB
> 
> E Shattow (4):
>   dt-bindings: riscv: starfive: add milkv,marscm-emmc
>   riscv: dts: starfive: add Milk-V Mars CM system-on-module
>   dt-bindings: riscv: starfive: add milkv,marscm-lite
>   riscv: dts: starfive: add Milk-V Mars CM Lite system-on-module
> 
>  .../devicetree/bindings/riscv/starfive.yaml   |   2 +
>  arch/riscv/boot/dts/starfive/Makefile         |   2 +
>  .../dts/starfive/jh7110-milkv-marscm-emmc.dts | 163 ++++++++++++++++
>  .../dts/starfive/jh7110-milkv-marscm-lite.dts | 176 ++++++++++++++++++
>  4 files changed, 343 insertions(+)
>  create mode 100644 arch/riscv/boot/dts/starfive/jh7110-milkv-marscm-emmc.dts
>  create mode 100644 arch/riscv/boot/dts/starfive/jh7110-milkv-marscm-lite.dts
> 
> 
> base-commit: 28fa0dcb571ab8f3be4d919f0e20e01d4e44bcb1
> -- 
> 2.50.0
> 
> 
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