From c13604d9ddc24dd4e9b65cad2844b2b603391ac8 Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Tue, 29 Aug 2017 15:57:41 +0200 Subject: [PATCH] arm64: dts: marvell: armada-3720-db: Add vmmc regulator for SD slot 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 --- arch/arm64/boot/dts/marvell/armada-3720-db.dts | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/boot/dts/marvell/armada-3720-db.dts b/arch/arm64/boot/dts/marvell/armada-3720-db.dts index 9df0f06..e6e0f38 100644 --- a/arch/arm64/boot/dts/marvell/armada-3720-db.dts +++ b/arch/arm64/boot/dts/marvell/armada-3720-db.dts @@ -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"; }; -- 2.7.4