From mboxrd@z Thu Jan 1 00:00:00 1970 From: gregory.clement@free-electrons.com (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 Message-ID: <20170829135741.4263-1-gregory.clement@free-electrons.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 9df0f06ce607..e6e0f38ce6e1 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"; }; -- 2.14.1