diff options
Diffstat (limited to 'chip/lm4/system.c')
| -rw-r--r-- | chip/lm4/system.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/chip/lm4/system.c b/chip/lm4/system.c index 2c970ee125..9f1ff425cd 100644 --- a/chip/lm4/system.c +++ b/chip/lm4/system.c @@ -28,9 +28,17 @@ enum hibdata_index { /* * Time it takes wait_for_hibctl_wc() to return. Experimentally verified to - * be ~200 us; the value below is somewhat conservative. */ + * be ~200 us; the value below is somewhat conservative. + */ #define HIB_WAIT_USEC 1000 +/* + * Time to hibernate to trigger a power-on reset. 50 ms is sufficient for the + * EC itself, but we need a longer delay to ensure the rest of the components + * on the same power rail are reset. + */ +#define HIB_RESET_USEC 100000 + static int wait_for_hibctl_wc(void) { int i; @@ -355,7 +363,7 @@ void system_reset(int flags) if (flags & SYSTEM_RESET_HARD) { /* Bounce through hibernate to trigger a hard reboot */ - hibernate(0, 50000, HIBDATA_WAKE_HARD_RESET); + hibernate(0, HIB_RESET_USEC, HIBDATA_WAKE_HARD_RESET); } else CPU_NVIC_APINT = 0x05fa0004; |