From: Marek Szyprowski <m.szyprowski@samsung.com>
To: linux-samsung-soc@vger.kernel.org
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Marian Mihailescu <mihailescu2m@gmail.com>
Subject: [PATCH 1/2] ARM: dts: exynos: Fix G3D power domain supply on Odroid XU3/XU4/HC1 boards
Date: Fri, 28 Feb 2020 15:55:01 +0100 [thread overview]
Message-ID: <20200228145502.8316-1-m.szyprowski@samsung.com> (raw)
In-Reply-To: CGME20200228145516eucas1p229d1500f0b4025699a1aab5e2d33423c@eucas1p2.samsung.com
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(+)
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;
--
2.17.1
next parent reply other threads:[~2020-02-28 14:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200228145516eucas1p229d1500f0b4025699a1aab5e2d33423c@eucas1p2.samsung.com>
2020-02-28 14:55 ` Marek Szyprowski [this message]
[not found] ` <CGME20200228145522eucas1p240577364b62d00499ba1d45691c8430a@eucas1p2.samsung.com>
2020-02-28 14:55 ` [PATCH 2/2] ARM: dts: exynos: Fix G3D power domain supply on Arndale Octa boards Marek Szyprowski
2020-02-29 14:41 ` Krzysztof Kozlowski
2020-02-29 14:41 ` [PATCH 1/2] ARM: dts: exynos: Fix G3D power domain supply on Odroid XU3/XU4/HC1 boards Krzysztof Kozlowski
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