[1/2] ARM: dts: exynos: Fix G3D power domain supply on Odroid XU3/XU4/HC1 boards

Message ID 20200228145502.8316-1-m.szyprowski@samsung.com
State New
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Series
  • [1/2] ARM: dts: exynos: Fix G3D power domain supply on Odroid XU3/XU4/HC1 boards
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Commit Message

Marek Szyprowski Feb. 28, 2020, 2:55 p.m.
G3D power domain in Exynos5422 SoC is supplied from VDD_G3D. Besides the
main GPU MALI module it also contains the power domain control logic and
clocks. Turning the VDD_G3D power supply off causes the power domain to
fail to operate properly and breaks for example system suspend/resume.
GPU should use VDD_G3D supply mainly to control the DVFS.

Fixes: 1a5a85c56402 ("ARM: dts: exynos: Add Mali/GPU node on Exynos5420 and enable it on Odroid XU3/4")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 arch/arm/boot/dts/exynos5422-odroid-core.dtsi | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
index 5cf1aed20490..ab27ff8bc3dc 100644
--- a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
+++ b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
@@ -901,6 +901,7 @@ 
 				regulator-min-microvolt = <800000>;
 				regulator-max-microvolt = <1400000>;
 				regulator-boot-on;
+				regulator-always-on;
 
 				regulator-state-mem {
 					regulator-off-in-suspend;