[U-Boot] [PATCH] exynos: Rise ARM voltage to 1.1V for chained bootloaders
Misha Komarovskiy
zombah at gmail.com
Tue Aug 25 10:53:26 CEST 2015
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 at gmail.com>
---
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 7d1b88a..a550d00 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);
--
1.8.4.5
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