blob: 410b2ee1dd2f356bf179b011fbd1024ed5dfd6a8 [file] [log] [blame]
From adb1f13ec2a3d9ec2f216f60d03aa074ac22fe70 Mon Sep 17 00:00:00 2001
From: Soeren Moch <>
Date: Thu, 3 Oct 2019 23:50:34 +0200
Subject: [PATCH] arm64: dts: rockchip: fix RockPro64 vdd-log regulator
commit 0990c5e7573098117c69651821647c228483e31b upstream.
The RockPro64 schematic [1] page 18 states a min voltage of 0.8V and a
max voltage of 1.4V for the VDD_LOG pwm regulator. However, there is an
additional note that the pwm parameter needs to be modified.
From the schematics a voltage range of 0.8V to 1.7V can be calculated.
Additional voltage measurements on the board show that this fix indeed
leads to the correct voltage, while without this fix the voltage was set
too high.
Fixes: e4f3fb490967 ("arm64: dts: rockchip: add initial dts support for Rockpro64")
Signed-off-by: Soeren Moch <>
Signed-off-by: Heiko Stuebner <>
Signed-off-by: Paul Gortmaker <>
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
index e525b5b99b15..65f55f95039d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
@@ -166,7 +166,7 @@
regulator-min-microvolt = <800000>;
- regulator-max-microvolt = <1400000>;
+ regulator-max-microvolt = <1700000>;
vin-supply = <&vcc5v0_sys>;