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authorSjoerd Simons <sjoerd.simons@collabora.co.uk>2017-01-10 12:28:57 +0100
committerMinkyu Kang <mk7.kang@samsung.com>2017-01-18 13:29:36 +0900
commit701e740f59bb1108485f1cb8e1b54248eee3ff87 (patch)
tree05afcc83b021db135e25f80471066920f3192b30
parent9c796784aa7e2e2ae4400db45381795bf766bc77 (diff)
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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: Sjoerd Simons <sjoerd.simons@collabora.co.uk> Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
-rw-r--r--board/samsung/common/exynos5-dt.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/board/samsung/common/exynos5-dt.c b/board/samsung/common/exynos5-dt.c
index 2e3b16d..aec1f39 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);