leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/arm64/boot/dts/marvell/armada-3720-db.dts
View File

@ -94,6 +94,16 @@
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 @@
bus-width = <4>;
marvell,pad-type = "sd";
vqmmc-supply = <&vcc_sd_reg1>;
vmmc-supply = <&vcc_sd_reg2>;
status = "okay";
};