linux-kernel - [PATCH 1/3] arm64: dts: allwinner: a64: olinuxino: Fix eMMC supply regulator

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Date:   Fri, 29 Nov 2019 11:13:34 +0200
From:   Stefan Mavrodiev <stefan@...mex.com>
To:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/Allwinner
        sunXi SoC support),
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS), linux-kernel@...r.kernel.org (open list)
Cc:     linux-sunxi@...glegroups.com, Stefan Mavrodiev <stefan@...mex.com>
Subject: [PATCH 1/3] arm64: dts: allwinner: a64: olinuxino: Fix eMMC supply regulator

A64-OLinuXino-eMMC uses 1.8V for eMMC supply. This is done via a triple
jumper, which sets VCC-PL to either 1.8V or 3.3V. This setting is different
for boards with and without eMMC.

This is not a big issue for DDR52 mode, however the eMMC will not work in
HS200/HS400, since these modes explicitly requires 1.8V.

Signed-off-by: Stefan Mavrodiev <stefan@...mex.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dts
index 96ab0227e82d..7d135decbd53 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dts
@@ -14,8 +14,8 @@
 &mmc2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc2_pins>;
-	vmmc-supply = <&reg_dcdc1>;
-	vqmmc-supply = <&reg_dcdc1>;
+	vmmc-supply = <&reg_eldo1>;
+	vqmmc-supply = <&reg_eldo1>;
 	bus-width = <8>;
 	non-removable;
 	cap-mmc-hw-reset;
-- 
2.17.1