From 057d2f4973ca3de1ee2dccb284fbc09443c4a056 Mon Sep 17 00:00:00 2001 From: Misha Komarovskiy Date: Tue, 25 Aug 2015 11:53:26 +0300 Subject: [PATCH] exynos: Rise ARM voltage to 1.1V for chained bootloaders 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 Acked-by: Simon Glass --- board/samsung/common/exynos5-dt.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/board/samsung/common/exynos5-dt.c b/board/samsung/common/exynos5-dt.c index 7d1b88a9b8..4250f722da 100644 --- a/board/samsung/common/exynos5-dt.c +++ b/board/samsung/common/exynos5-dt.c @@ -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); -- 2.39.5