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| author | Randall Spangler <rspangler@chromium.org> | 2014-01-23 14:14:20 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-01-24 19:37:41 +0000 |
| commit | 2d39c66ee9083ff83a3121e2b4654af7a4b17542 (patch) | |
| tree | 7a460c21f7107c8c01a6f78e6d5d320341f9b4f2 | |
| parent | 75857e80d0ef0426fd80fd7cb526ff7b895ba9a0 (diff) | |
| download | chrome-ec-2d39c66ee9083ff83a3121e2b4654af7a4b17542.tar.gz | |
rambi: Increase REST# pulse length for warm reboot
The PCH uses a 16 ms debounce, so need to assert the signal for twice
that to be assured of a reboot.
BUG=chrome-os-partner:25088
BRANCH=rambi
TEST=Alt+VolUp+R reboots the system
Change-Id: I51fd54fd992e4e54e6c3bc9c13f9fd59e9bf55ac
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/183726
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
| -rw-r--r-- | power/baytrail.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/power/baytrail.c b/power/baytrail.c index 8615964705..04f0795a95 100644 --- a/power/baytrail.c +++ b/power/baytrail.c @@ -89,11 +89,11 @@ void chipset_reset(int cold_reset) /* * Send a reset pulse to the PCH. This just causes it to * assert INIT# to the CPU without dropping power or asserting - * PLTRST# to reset the rest of the system. Pulse must be at - * least 16 PCI clocks long = 500 ns. + * PLTRST# to reset the rest of the system. The PCH uses a 16 + * ms debounce time, so assert the signal for twice that. */ gpio_set_level(GPIO_PCH_RCIN_L, 0); - udelay(10); + usleep(32 * MSEC); gpio_set_level(GPIO_PCH_RCIN_L, 1); } } |