From bba1320ef21bd25f9f77b0852524aed35b7d6b00 Mon Sep 17 00:00:00 2001 From: Paul Cercueil Date: Wed, 6 Dec 2023 23:15:54 +0100 Subject: [PATCH] ARM: dts: samsung: exynos4210-i9100: Unconditionally enable LDO12 [ Upstream commit 84228d5e29dbc7a6be51e221000e1d122125826c ] The kernel hangs for a good 12 seconds without any info being printed to dmesg, very early in the boot process, if this regulator is not enabled. Force-enable it to work around this issue, until we know more about the underlying problem. Signed-off-by: Paul Cercueil Fixes: 8620cc2f99b7 ("ARM: dts: exynos: Add devicetree file for the Galaxy S2") Cc: stable@vger.kernel.org # v5.8+ Link: https://lore.kernel.org/r/20231206221556.15348-2-paul@crapouillou.net Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin --- arch/arm/boot/dts/exynos4210-i9100.dts | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/exynos4210-i9100.dts b/arch/arm/boot/dts/exynos4210-i9100.dts index 53e023fc1cac..b4c7b642e456 100644 --- a/arch/arm/boot/dts/exynos4210-i9100.dts +++ b/arch/arm/boot/dts/exynos4210-i9100.dts @@ -521,6 +521,14 @@ vtcam_reg: LDO12 { regulator-name = "VT_CAM_1.8V"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + + /* + * Force-enable this regulator; otherwise the + * kernel hangs very early in the boot process + * for about 12 seconds, without apparent + * reason. + */ + regulator-always-on; }; vcclcd_reg: LDO13 {