This is a note to let you know that I've just added the patch titled
ARM: dts: samsung: exynos4210-i9100: Unconditionally enable LDO12
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-dts-samsung-exynos4210-i9100-unconditionally-ena.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d4e1dc126dce97720f2aed7d74115256f8db1475
Author: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
Date: Wed Dec 6 23:15:54 2023 +0100
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 <paul@xxxxxxxxxxxxxxx>
Fixes: 8620cc2f99b7 ("ARM: dts: exynos: Add devicetree file for the Galaxy S2")
Cc: stable@xxxxxxxxxxxxxxx # v5.8+
Link: https://lore.kernel.org/r/20231206221556.15348-2-paul@xxxxxxxxxxxxxxx
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm/boot/dts/exynos4210-i9100.dts b/arch/arm/boot/dts/exynos4210-i9100.dts
index 93880bdbcad9..8232d843bfe0 100644
--- a/arch/arm/boot/dts/exynos4210-i9100.dts
+++ b/arch/arm/boot/dts/exynos4210-i9100.dts
@@ -520,6 +520,14 @@ 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 {
