diff options
| author | David Hendricks <dhendrix@chromium.org> | 2016-06-02 16:26:26 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2016-06-03 03:00:07 -0700 |
| commit | 82c803d93b6908adca93c88b70012b58db640d71 (patch) | |
| tree | 28cc252a43c572c125d0dc1f99a7f78cfcfe4728 | |
| parent | b5c56aba6f756eca9bfdeac67289ffafb9d37ff0 (diff) | |
| download | chrome-ec-82c803d93b6908adca93c88b70012b58db640d71.tar.gz | |
reef: Move PP3300 and PMIC enable to occur together
Update power sequencing as per Rachel's recommendation. We currently
wait for PP5000_PG and PP3300_PG before enabling the PMIC. This changes
the order so that we don't wait for PP3300_PG before setting the PMIC
enable.
BUG=chrome-os-partner:51323
BRANCH=none
TEST=see scope shots mentioned in the BUG
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Change-Id: I022a9ab21c1bcb70dc72f358dbf89acb656851b8
Reviewed-on: https://chromium-review.googlesource.com/349291
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
| -rw-r--r-- | board/reef/board.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/board/reef/board.c b/board/reef/board.c index 01c755ee2c..4a1a6aa95c 100644 --- a/board/reef/board.c +++ b/board/reef/board.c @@ -359,16 +359,16 @@ static void board_init(void) */ /* Enable PP5000 before PP3300 due to NFC: chrome-os-partner:50807 */ gpio_set_level(GPIO_EN_PP5000, 1); - - /* Enable 3.3V rail */ - gpio_set_level(GPIO_EN_PP3300, 1); - - while (!gpio_get_level(GPIO_PP3300_PG) || - !gpio_get_level(GPIO_PP5000_PG)) + while (!gpio_get_level(GPIO_PP5000_PG)) ; /* Enable PMIC */ gpio_set_level(GPIO_V5A_EN, 1); + + /* Enable 3.3V rail */ + gpio_set_level(GPIO_EN_PP3300, 1); + while (!gpio_get_level(GPIO_PP3300_PG)) + ; } /* PP3300 needs to be enabled before TCPC init hooks */ DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_FIRST); |