linux-kernel - [PATCH 5.4 027/222] arm64: dts: allwinner: a64: olinuxino: Fix eMMC supply regulator

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Message-Id: <20200122092835.388834257@linuxfoundation.org>
Date:   Wed, 22 Jan 2020 10:26:53 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Stefan Mavrodiev <stefan@...mex.com>,
        Maxime Ripard <maxime@...no.tech>
Subject: [PATCH 5.4 027/222] arm64: dts: allwinner: a64: olinuxino: Fix eMMC supply regulator

From: Stefan Mavrodiev <stefan@...mex.com>

commit 8467ebbf708e5c4574b4eb5f663558fc724945ac upstream.

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>
Signed-off-by: Maxime Ripard <maxime@...no.tech>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

--- 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;