linux-kernel - [PATCH AUTOSEL 4.19 045/205] ARM: dts: exynos: Fix regulators configuration on Peach Pi/Pit Chromebooks

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Date:   Fri,  8 Nov 2019 06:35:12 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Sasha Levin <sashal@...nel.org>, devicetree@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 045/205] ARM: dts: exynos: Fix regulators configuration on Peach Pi/Pit Chromebooks

From: Marek Szyprowski <m.szyprowski@...sung.com>

[ Upstream commit f8f3b7fc21b1cb59385b780acd9b9a26d04cb7b2 ]

Regulators, which are marked as 'on-in-suspend' seems to be critical for
board operation, thus they must not be disabled anytime. This can be
only assured by marking them as 'always-on', because otherwise some
actions of their clients might result in turning them off. This patch
restores suspend/resume operation on Peach-Pit Chromebook board. It
partially reverts 'always-on' property removal done by the commit
mentioned in the Fixes tag.

Fixes: 665c441eea3d ("ARM: dts: exynos: Remove unneded always-on for regulators on Peach boards")
Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
Tested-by: Tomasz Figa <tfiga@...omium.org>
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm/boot/dts/exynos5420-peach-pit.dts | 3 +++
 arch/arm/boot/dts/exynos5800-peach-pi.dts  | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
index 25bdc9d97a4df..769d60d6c9006 100644
--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
@@ -312,6 +312,7 @@
 				regulator-name = "vdd_1v35";
 				regulator-min-microvolt = <1350000>;
 				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
 				regulator-boot-on;
 				regulator-state-mem {
 					regulator-on-in-suspend;
@@ -333,6 +334,7 @@
 				regulator-name = "vdd_2v";
 				regulator-min-microvolt = <2000000>;
 				regulator-max-microvolt = <2000000>;
+				regulator-always-on;
 				regulator-boot-on;
 				regulator-state-mem {
 					regulator-on-in-suspend;
@@ -343,6 +345,7 @@
 				regulator-name = "vdd_1v8";
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
 				regulator-boot-on;
 				regulator-state-mem {
 					regulator-on-in-suspend;
diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
index 7989631b39ccf..492e2cd2e559e 100644
--- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
+++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
@@ -312,6 +312,7 @@
 				regulator-name = "vdd_1v35";
 				regulator-min-microvolt = <1350000>;
 				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
 				regulator-boot-on;
 				regulator-state-mem {
 					regulator-on-in-suspend;
@@ -333,6 +334,7 @@
 				regulator-name = "vdd_2v";
 				regulator-min-microvolt = <2000000>;
 				regulator-max-microvolt = <2000000>;
+				regulator-always-on;
 				regulator-boot-on;
 				regulator-state-mem {
 					regulator-on-in-suspend;
@@ -343,6 +345,7 @@
 				regulator-name = "vdd_1v8";
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
 				regulator-boot-on;
 				regulator-state-mem {
 					regulator-on-in-suspend;
-- 
2.20.1