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 <zombah@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

diff --git a/board/samsung/common/exynos5-dt.c b/board/samsung/common/exynos5-dt.c
index 7d1b88a9b8a17d5094d01831d268418a35814960..4250f722da7bd5160bb5a74e112d201b9a101f5a 100644 (file)
--- 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);