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 c172f5a803e7b1a3fa254654dee3916c8c46f84a..3d5eb0b235b4f45a038540f6f5ff173cdce8dccc 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
@@ -493,6 +493,8 @@
                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 {