linux-kernel - [PATCH v1 2/2] arm64: dts: exynos: keep LDO12 always-on

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Message-Id: <20200705070918.63531-2-alim.akhtar@samsung.com>
Date:   Sun,  5 Jul 2020 12:39:18 +0530
From:   Alim Akhtar <alim.akhtar@...sung.com>
To:     krzk@...nel.org
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        robh+dt@...nel.org, Alim Akhtar <alim.akhtar@...sung.com>
Subject: [PATCH v1 2/2] arm64: dts: exynos: keep LDO12 always-on

LDO12 on exynos7 supply power to VDDQ_UFS20_RESET,
in case this regulator is OFF, UFS host controller
can not send command to UFS device. To keep this supply
ON, set regulator-always-on property for this ldo.

Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com>
---
 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 bb86950032d3..92fecc539c6c 100644
--- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
@@ -194,6 +194,7 @@
 				regulator-min-microvolt = <1000000>;
 				regulator-max-microvolt = <1300000>;
 				regulator-enable-ramp-delay = <125>;
+				regulator-always-on;
 			};
 
 			ldo13_reg: LDO13 {
-- 
2.17.1