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: Sjoerd Simons sjoerd.simons@collabora.co.uk
---
board/samsung/common/exynos5-dt.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/board/samsung/common/exynos5-dt.c b/board/samsung/common/exynos5-dt.c index 2e3b16df45..aec1f396b0 100644 --- a/board/samsung/common/exynos5-dt.c +++ b/board/samsung/common/exynos5-dt.c @@ -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);