From: Iker Pedrosa <[email protected]> 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 and internal pull-up support - 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. Suggested-by: Anand Moon <[email protected]> Tested-by: Anand Moon <[email protected]> Tested-by: Margherita Milani <[email protected]> Tested-by: Aurelien Jarno <[email protected]> Reviewed-by: Aurelien Jarno <[email protected]> Signed-off-by: Iker Pedrosa <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Yixun Lan <[email protected]> [ upstream commit: c76e2f058cbcab84e4a703f26857a58bdf6a0042 ] (cherry picked from commit 3efd965004f1604c204001dcead9a44f729d5d58) --- dts/upstream/src/riscv/spacemit/k1-bananapi-f3.dts | 24 ++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/dts/upstream/src/riscv/spacemit/k1-bananapi-f3.dts b/dts/upstream/src/riscv/spacemit/k1-bananapi-f3.dts index 9429189354d6..9beb8947f12c 100644 --- a/dts/upstream/src/riscv/spacemit/k1-bananapi-f3.dts +++ b/dts/upstream/src/riscv/spacemit/k1-bananapi-f3.dts @@ -17,6 +17,8 @@ spi3 = &spi3; i2c2 = &i2c2; i2c8 = &i2c8; + mmc0 = &emmc; + mmc1 = &sdhci0; }; chosen { @@ -221,7 +223,7 @@ regulator-always-on; }; - buck4 { + buck4: buck4 { regulator-min-microvolt = <500000>; regulator-max-microvolt = <3300000>; regulator-ramp-delay = <5000>; @@ -242,7 +244,7 @@ regulator-always-on; }; - aldo1 { + aldo1: aldo1 { regulator-min-microvolt = <500000>; regulator-max-microvolt = <3400000>; regulator-boot-on; @@ -374,3 +376,21 @@ reset-gpios = <&gpio K1_GPIO(124) GPIO_ACTIVE_LOW>; }; }; + +&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>; + vqmmc-supply = <&aldo1>; + sd-uhs-sdr25; + sd-uhs-sdr50; + sd-uhs-sdr104; + status = "okay"; +}; -- 2.51.0
