[PATCH v3 6/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Michael Opdenacker]

Hi Iker

Thanks for the update!

On 3/16/26 3:03 PM, Iker Pedrosa wrote:
> Add complete SD card controller support with UHS high-speed modes.
>
> - Enable sdhci0 controller with 4-bit bus width
> - Configure card detect GPIO with inversion
> - Connect vmmc-supply to buck4 for 3.3V card power
> - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
> - Add dual pinctrl states for voltage-dependent pin configuration
> - Support UHS-I SDR25, SDR50, and SDR104 modes
>
> This enables full SD card functionality including high-speed UHS modes
> for improved performance.
>
> Tested-by: Anand Moon <linux.amoon at gmail.com>
> Tested-by: Trevor Gamblin <tgamblin at baylibre.com>
> Signed-off-by: Iker Pedrosa <ikerpedrosam at gmail.com>
> ---
>   arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 19 +++++++++++++++++++
>   1 file changed, 19 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> index f1533c99881dbf38e16cff5e91e33253cfa7a56d..aff23846085d22d1e9cd77434bffd2816ad59e12 100644
> --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> @@ -140,3 +140,22 @@ aldo1: aldo1 {
>   		};
>   	};
>   };
> +
> +&sdhci0 {
> +	pinctrl-names = "default", "state_uhs";
> +	pinctrl-0 = <&mmc1_cfg>;
> +	pinctrl-1 = <&mmc1_uhs_cfg>;
> +	bus-width = <4>;
> +	cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
> +	cd-inverted;
> +	no-mmc;
> +	no-sdio;
> +	disable-wp;
> +	cap-sd-highspeed;
> +	vmmc-supply = <&buck4>;
> +	vqmmc-supply = <&aldo1>;
> +	sd-uhs-sdr25;
> +	sd-uhs-sdr50;
> +	sd-uhs-sdr104;
> +	status = "okay";
> +};


Tested successfully on OrangePi RV2.
Tested-by: Michael Opdenacker <michael.opdenacker at rootcommit.com>
Cheers
Michael

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