[PATCH] arm: dts: rk3399-puma: re-add vdd_log for uboot

[Heiko Stuebner]

The rk3399-puma board needs a 950mV vdd_log to work stable.
This was already added in
commit 77012e79ffc3 ("rockchip: rk3399-puma: Set VDD_LOG to 950 mV")
but lost again with
commit 167efc2c7a46 ("arm64: dts: rk3399: Sync v5.7-rc1 from Linux")

So to make puma stable again re-add the vdd_log pwm regulator.
As it is not part of the mainline Linux dts right now, add it
to the -u-boot dtsi for puma.

Fixes: 167efc2c7a46 ("arm64: dts: rk3399: Sync v5.7-rc1 from Linux")
Signed-off-by: Heiko Stuebner <he...@sntech.de>
---
 arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi 
b/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi
index 29846c4b00..76eb51d2d7 100644
--- a/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi
+++ b/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi
@@ -49,6 +49,17 @@
                regulator-min-microvolt = <1800000>;
                regulator-max-microvolt = <1800000>;
        };
+
+       vdd_log: vdd-log {
+               compatible = "pwm-regulator";
+               pwms = <&pwm2 0 25000 1>;
+               regulator-name = "vdd_log";
+               regulator-min-microvolt = <800000>;
+               regulator-max-microvolt = <1400000>;
+               regulator-always-on;
+               regulator-boot-on;
+               regulator-init-microvolt = <950000>;
+       };
 };
 
 &gpio1 {
-- 
2.30.2