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arm64: dts: rockchip: Re-add regulator-boot-on, regulator-always-on for vdd_gpu on rk3399-roc-pc

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[ 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: ec7d731d81 ("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>
This commit is contained in:
Alex Bee 2021-06-19 14:14:46 +02:00 committed by Greg Kroah-Hartman
parent 9436e9001d
commit b3231050c7
1 changed files with 2 additions and 0 deletions
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arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
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@ -488,6 +488,8 @@ vdd_gpu: regulator@41 {
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 {