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| author | Nicolas Boichat <drinkcat@chromium.org> | 2018-07-21 17:33:12 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-07-23 09:27:20 -0700 |
| commit | 7a537dee1e6566fe18c6ed7e61e487384507fd39 (patch) | |
| tree | 36d2b6a96497fbcbc31d1f265dfa543cbb754a20 /board/scarlet/board.h | |
| parent | f85b863dae721dadb1d15b619cbf26373fb95be2 (diff) | |
| download | chrome-ec-7a537dee1e6566fe18c6ed7e61e487384507fd39.tar.gz | |
config: Clarify CONFIG_STM32_CLOCK_LSE is sourced externally
On kukui, we fell into a copy-pasta trap, and didn't realize that
CONFIG_STM32_CLOCK_LSE meant that we needed an external 32.768 kHz
clock source.
With this option set (and no external source), the EC gets stuck
on boot, without printing anything on console at all, which is
very confusing during early bringup.
BRANCH=none
BUG=b:80159522
TEST=make buildall -j
Change-Id: I65434e5628a4e8102d56ad225aa378bcbe5c299f
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1146126
Reviewed-by: Yilun Lin <yllin@chromium.org>
Diffstat (limited to 'board/scarlet/board.h')
| -rw-r--r-- | board/scarlet/board.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/board/scarlet/board.h b/board/scarlet/board.h index 22e2def7f2..087ac427e5 100644 --- a/board/scarlet/board.h +++ b/board/scarlet/board.h @@ -28,6 +28,7 @@ #define CONFIG_SPI #define CONFIG_SPI_MASTER #define CONFIG_STM_HWTIMER32 +/* Source RTCCLK from external 32.768kHz source on PC15/OSC32_IN. */ #define CONFIG_STM32_CLOCK_LSE #define CONFIG_SWITCH #define CONFIG_WATCHDOG_HELP |