From f210cbc1f3d4f84baa595d83933369b4d6a529ea Mon Sep 17 00:00:00 2001
From: Soeren Moch <smoch@web.de>
Date: Thu, 7 Nov 2019 12:11:22 +0100
Subject: [PATCH] arm: dts: rk3399-rockpro64: slightly increase center voltage
The rk3399 VD_CENTER voltage domain is not subject to dynamic voltage
scaling. So the regulator reset voltage of 0.9V is used on this board.
Let u-boot initialize the center voltage to 0.95V as it is done for the
VD_LOGIC domain. This avoids instability and occasional linux kernel
Opses on this board.
Signed-off-by: Soeren Moch <smoch@web.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
---
arch/arm/dts/rk3399-rockpro64-u-boot.dtsi | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
index a073ea25f5..4648513ea9 100644
--- a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
+++ b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
@@ -11,6 +11,11 @@
};
};
+&vdd_center {
+ regulator-min-microvolt = <950000>;
+ regulator-max-microvolt = <950000>;
+};
+
&vdd_log {
regulator-init-microvolt = <950000>;
};
--
2.39.5