arm64: dts: rockchip: Re-add regulator-boot-on, regulator-always-on for vdd_gpu on...

[ Upstream commit 06b2818678d9b35102c9816ffaf6893caf306ed0 ]

This might be a limitation of either the current panfrost driver
devfreq implementation or how the gpu is implemented in RK3399 SoC.
The gpu regulator must never get disabled or the registers get
(randomly?) inaccessable by the driver. (see all other RK3399 boards)

Fixes: ec7d731d81e7 ("arm64: dts: rockchip: Add node for gpu on rk3399-roc-pc")
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Link: https://lore.kernel.org/r/20210619121446.7802-1-knaerzche@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
index 20309076dbac069acb62bd048dbb555e1d2ec53f..e4345e5bdfb674200dfa5f73c7d0afb7fc1b8c7d 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
@@ -488,6 +488,8 @@
                regulator-min-microvolt = <712500>;
                regulator-max-microvolt = <1500000>;
                regulator-ramp-delay = <1000>;
+               regulator-always-on;
+               regulator-boot-on;
                vin-supply = <&vcc3v3_sys>;
 
                regulator-state-mem {