| From 40d448e17b7cb7770a6a60a18a97e0d623dffc5a Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Sun, 5 Jul 2020 12:39:17 +0530 |
| Subject: arm64: dts: exynos: Fix silent hang after boot on Espresso |
| |
| From: Alim Akhtar <alim.akhtar@samsung.com> |
| |
| [ Upstream commit b072714bfc0e42c984b8fd6e069f3ca17de8137a ] |
| |
| Once regulators are disabled after kernel boot, on Espresso board silent |
| hang observed because of LDO7 being disabled. LDO7 actually provide |
| power to CPU cores and non-cpu blocks circuitries. Keep this regulator |
| always-on to fix this hang. |
| |
| Fixes: 9589f7721e16 ("arm64: dts: Add S2MPS15 PMIC node on exynos7-espresso") |
| Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> |
| Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| arch/arm64/boot/dts/exynos/exynos7-espresso.dts | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts |
| index 7af288fa9475f..a9412805c1d6a 100644 |
| --- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts |
| +++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts |
| @@ -157,6 +157,7 @@ ldo7_reg: LDO7 { |
| regulator-min-microvolt = <700000>; |
| regulator-max-microvolt = <1150000>; |
| regulator-enable-ramp-delay = <125>; |
| + regulator-always-on; |
| }; |
| |
| ldo8_reg: LDO8 { |
| -- |
| 2.25.1 |
| |
