Emil, This look okay to take?
On Fri, Sep 05, 2025 at 07:39:38AM -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
>
> Changes since v2:
> - PATCH 3/5 delete newline at end of file
> - PATCH 5/5 delete newline at end of file
>
> Link to v2:
> https://lore.kernel.org/lkml/20250831225959.531393-1-e@freeshell.de/
>
> E Shattow (5):
> riscv: dts: starfive: add common board dtsi for Milk-V Mars CM
> variants
> 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 | 12 ++
> .../dts/starfive/jh7110-milkv-marscm-lite.dts | 25 +++
> .../dts/starfive/jh7110-milkv-marscm.dtsi | 159 ++++++++++++++++++
> 5 files changed, 200 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
> create mode 100644 arch/riscv/boot/dts/starfive/jh7110-milkv-marscm.dtsi
>
>
> base-commit: 8181cc2f3f21657392da912eb20ee17514c87828
> --
> 2.50.0
>