[PATCH v4 6/8] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes
From: Iker Pedrosa <ikerpedrosam@gmail.com>
Date: 2026-03-23 10:19:40
Also in:
linux-mmc, linux-riscv, lkml, spacemit
Subsystem:
risc-v architecture, risc-v spacemit soc support, the rest · Maintainers:
Paul Walmsley, Palmer Dabbelt, Albert Ou, Yixun Lan, Linus Torvalds
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 <redacted> Tested-by: Trevor Gamblin <tgamblin@baylibre.com> Tested-by: Michael Opdenacker <redacted> Signed-off-by: Iker Pedrosa <ikerpedrosam@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 9c417a483f6bad6e60617cf8d5400ca079588726..5f823611c969eb0e15546862228ae4f65375675a 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"; +};
--
2.53.0