ARM: dts: samsung: exynos4210-i9100: Unconditionally enable LDO12

commit 84228d5e29dbc7a6be51e221000e1d122125826c upstream.

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@crapouillou.net>
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 <krzysztof.kozlowski@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm/boot/dts/samsung/exynos4210-i9100.dts b/arch/arm/boot/dts/samsung/exynos4210-i9100.dts
index a9ec1f6..a076a1d 100644 (file)
--- a/arch/arm/boot/dts/samsung/exynos4210-i9100.dts
+++ b/arch/arm/boot/dts/samsung/exynos4210-i9100.dts
@@ -527,6 +527,14 @@
                                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 {