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riscv: dts: spacemit: enable SD card support on Milk-V Jupiter

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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 pull-up
- 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
- Alias it as mmc1

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Yixun Lan <dlan@kernel.org>
Link: https://patch.msgid.link/20260519041458.3287843-5-aurelien@aurel32.net
Signed-off-by: Yixun Lan <dlan@kernel.org>
This commit is contained in:
Aurelien Jarno 2026-05-19 06:12:38 +02:00 committed by Yixun Lan
parent 4bc9f44d58
commit 60b5e027c8
1 changed files with 20 additions and 1 deletions
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21
arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
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@ -17,6 +17,7 @@ aliases {
i2c2 = &i2c2;
i2c8 = &i2c8;
mmc0 = &emmc;
mmc1 = &sdhci0;
serial0 = &uart0;
};
@ -250,7 +251,7 @@ buck6 {
regulator-always-on;
};
aldo1 {
aldo1: aldo1 {
regulator-min-microvolt = <500000>;
regulator-max-microvolt = <3400000>;
regulator-boot-on;
@ -385,6 +386,24 @@ uboot@a00000 {
};
};
&sdhci0 {
pinctrl-names = "default", "uhs";
pinctrl-0 = <&mmc1_cfg>;
pinctrl-1 = <&mmc1_uhs_cfg>;
bus-width = <4>;
cd-gpios = <&gpio K1_GPIO(80) (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
no-mmc;
no-sdio;
disable-wp;
cap-sd-highspeed;
vmmc-supply = <&buck4_3v3>;
vqmmc-supply = <&aldo1>;
sd-uhs-sdr25;
sd-uhs-sdr50;
sd-uhs-sdr104;
status = "okay";
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_2_cfg>;