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arm64: dts: marvell: armada-3720-db: Add vmmc regulator for SD slot

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By adding this regulator, a proper reset is done during boot. Without
this, the UHS failed to be detected after a warm reboot when the SD card
remained in the slot, then it fallback to an HS.

Note that the vmcc is supported by the xenon driver only with the
following fix: "mmc: sdhci-xenon: add set_power callback".

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
This commit is contained in:
Gregory CLEMENT 2017-08-29 15:57:41 +02:00
parent 9e83bbdb6f
commit c13604d9dd
1 changed files with 11 additions and 0 deletions
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11
arch/arm64/boot/dts/marvell/armada-3720-db.dts
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@ -94,6 +94,16 @@ vcc_sd_reg1: regulator {
3300000 0x0>;
enable-active-high;
};
vcc_sd_reg2: regulator-vmcc {
compatible = "regulator-fixed";
regulator-name = "vcc_sd2";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
enable-active-high;
gpio = <&gpio_exp 4 GPIO_ACTIVE_HIGH>;
};
};
/* Gigabit module on CON19(V2.0)/CON21(V1.4) */
@ -179,6 +189,7 @@ &sdhci1 {
bus-width = <4>;
marvell,pad-type = "sd";
vqmmc-supply = <&vcc_sd_reg1>;
vmmc-supply = <&vcc_sd_reg2>;
status = "okay";
};