diff options
| author | Randall Spangler <rspangler@chromium.org> | 2012-04-06 09:33:41 -0700 |
|---|---|---|
| committer | Randall Spangler <rspangler@chromium.org> | 2012-04-09 10:33:35 -0700 |
| commit | e9328ac4f63351b4282916034270aa86b7e74922 (patch) | |
| tree | d0fde5840594c33709927a5a4d1fabfe0f858c26 /board/bds | |
| parent | 1a9a415cf68c6e8e3b31972c072c81ed886290ab (diff) | |
| download | chrome-ec-e9328ac4f63351b4282916034270aa86b7e74922.tar.gz | |
Support dynamically changing the system clock
Add nopll command to turn off the PLL, reducing the system clock to 16Mhz.
Signed-off-by: Randall Spangler <rspangler@chromium.org>
BUG=chrome-os-partner:8798
TEST=manual
boot system
press power button to boot x86
temps // should print all temperatures
timerinfo
timerinfo
timerinfo // convince yourself this is counting up at about 1MHz
nopll // this drops the system clock to 16MHz
temps // should still print all temperatures
timerinfo
timerinfo
timerinfo // should still be counting up at about 1MHz
Change-Id: Ie29ceb17af348148bffadf63d60c1b731f4c3f6d
Diffstat (limited to 'board/bds')
| -rw-r--r-- | board/bds/board.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/board/bds/board.h b/board/bds/board.h index 67aad5f401..152b8ee182 100644 --- a/board/bds/board.h +++ b/board/bds/board.h @@ -11,9 +11,6 @@ /* Config flags */ #define CONFIG_LIGHTBAR -/* 66.667 Mhz clock frequency */ -#define CPU_CLOCK 66666667 - /* Fan PWM channels */ #define FAN_CH_KBLIGHT 1 /* Keyboard backlight */ #define FAN_CH_POWER_LED 3 /* Power adapter LED */ |