riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

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Add complete SD card controller support with UHS high-speed modes.

- Enable sdhci0 controller with 4-bit bus width
- Configure card detect GPIO with GPIO_ACTIVE_LOW logic
- 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
- Add stable MMC device aliases (mmc0 = eMMC, mmc1 = SD card)

This enables full SD card functionality including high-speed UHS modes
for improved performance.

Tested-by: Anand Moon <linux.amoon@gmail.com>
Tested-by: Trevor Gamblin <tgamblin@baylibre.com>
Tested-by: Michael Opdenacker <michael.opdenacker@rootcommit.com>
Tested-by: Vincent Legoll <legoll@online.fr>
Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
Link: https://patch.msgid.link/20260515-orangepi-sd-card-uhs-v10-2-094af27e310d@gmail.com
Signed-off-by: Yixun Lan <dlan@kernel.org>

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Iker Pedrosa 2026-05-15 12:49:00 +02:00 • committed by Yixun Lan

parent 2d77e57710

commit 2585c60ce2

1 changed files with 21 additions and 1 deletions

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arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts

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