[PATCH] arm64: dts: marvell: armada-3720-db: Add vmmc regulator for SD slot
Gregory CLEMENT
gregory.clement at free-electrons.com
Tue Sep 19 07:09:22 PDT 2017
Hi,
On mar., août 29 2017, Gregory CLEMENT <gregory.clement at free-electrons.com> wrote:
> 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 at free-electrons.com>
Applied on mvebu/dt64
Gregory
> ---
> 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
>
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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