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exynos: Rise ARM voltage to 1.1V for chained bootloaders

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If board uses downstream Chrome OS U-Boot as first stage
bootloader and upstream version is chained second stage,
1.1V is minimum voltage borderline.

Signed-off-by: Misha Komarovskiy <zombah@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Misha Komarovskiy 2015-08-25 11:53:26 +03:00 committed by Simon Glass
parent d9917b0b6c
commit 057d2f4973
1 changed files with 4 additions and 3 deletions
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7
board/samsung/common/exynos5-dt.c
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@ -121,11 +121,12 @@ int exynos_power_init(void)
return ret;
/*
* This would normally be 1.3V, but since we are running slowly 1V
* 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.
* hangs with the case open. 1.1V is minimum voltage borderline for
* chained bootloaders.
*/
ret = exynos_set_regulator("vdd_arm", 1000000);
ret = exynos_set_regulator("vdd_arm", 1100000);
if (ret)
return ret;
ret = exynos_set_regulator("vdd_int", 1012500);