linux-kernel - [PATCH v2 1/3] arm64: dts: allwinner: a64: olinuxino: Fix eMMC supply regulator

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Message-Id: <20191129113941.20170-2-stefan@olimex.com>
Date:   Fri, 29 Nov 2019 13:39:39 +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>,
        stable@...r.kernel.org
Subject: [PATCH v2 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.

Fixes: 94f68f3a4b2a ("arm64: dts: allwinner: a64: Add A64 OlinuXino board (with eMMC)")
Cc: stable@...r.kernel.org # v5.4
Signed-off-by: Stefan Mavrodiev <stefan@...mex.com>
---
Changes for v2:
 - Restore the original eMMC vmmc-supply property

 arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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..121e6cc4849b 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino-emmc.dts
@@ -15,7 +15,7 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc2_pins>;
 	vmmc-supply = <&reg_dcdc1>;
-	vqmmc-supply = <&reg_dcdc1>;
+	vqmmc-supply = <&reg_eldo1>;
 	bus-width = <8>;
 	non-removable;
 	cap-mmc-hw-reset;
-- 
2.17.1