linux-kernel - [PATCH] ARM: dts: sun8i: r40: bananapi-m2-ultra: Fix dcdc1 regulator

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Message-Id: <20200824193649.978197-1-jernej.skrabec@siol.net>
Date:   Mon, 24 Aug 2020 21:36:49 +0200
From:   Jernej Skrabec <jernej.skrabec@...l.net>
To:     mripard@...nel.org, wens@...e.org
Cc:     robh+dt@...nel.org, icenowy@...c.io, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: [PATCH] ARM: dts: sun8i: r40: bananapi-m2-ultra: Fix dcdc1 regulator

DCDC1 regulator powers many different subsystems. While some of them can
work at 3.0 V, some of them can not. For example, VCC-HDMI can only work
between 3.24 V and 3.36 V. According to OS images provided by the board
manufacturer this regulator should be set to 3.3 V.

Set DCDC1 and DCDC1SW to 3.3 V in order to fix this.

Fixes: da7ac948fa93 ("ARM: dts: sun8i: Add board dts file for Banana Pi M2
		      Ultra")
Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>
---
 arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
index 42d62d1ba1dc..ea15073f0c79 100644
--- a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
+++ b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
@@ -223,16 +223,16 @@ &reg_aldo3 {
 };
 
 &reg_dc1sw {
-	regulator-min-microvolt = <3000000>;
-	regulator-max-microvolt = <3000000>;
+	regulator-min-microvolt = <3300000>;
+	regulator-max-microvolt = <3300000>;
 	regulator-name = "vcc-gmac-phy";
 };
 
 &reg_dcdc1 {
 	regulator-always-on;
-	regulator-min-microvolt = <3000000>;
-	regulator-max-microvolt = <3000000>;
-	regulator-name = "vcc-3v0";
+	regulator-min-microvolt = <3300000>;
+	regulator-max-microvolt = <3300000>;
+	regulator-name = "vcc-3v3";
 };
 
 &reg_dcdc2 {
-- 
2.28.0