Commit 701e740f authored by Sjoerd Simons's avatar Sjoerd Simons Committed by Minkyu Kang

exynos5: Don't potentially undervoltage the CPU

For snow when chainloading u-boot the CPU seems to be running at full
speed. The lower CPU voltage seems to be ok for u-boot, but when booting
linux (bringing up all cores) I'm seeing random crashes.

Bump the voltage up to a level that's safe for all cpu frequencies.
Signed-off-by: 's avatarSjoerd Simons <>
Reviewed-by: 's avatarJavier Martinez Canillas <>
Signed-off-by: 's avatarMinkyu Kang <>
parent 9c796784
......@@ -123,13 +123,7 @@ int exynos_power_init(void)
if (ret)
return ret;
* This would normally be 1.3V, but since we are running slowly 1.1V
* is enough. For spring it helps reduce CPU temperature and avoid
* hangs with the case open. 1.1V is minimum voltage borderline for
* chained bootloaders.
ret = exynos_set_regulator("vdd_arm", 1100000);
ret = exynos_set_regulator("vdd_arm", 1300000);
if (ret)
return ret;
ret = exynos_set_regulator("vdd_int", 1012500);
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