diff options
| -rw-r--r-- | common/keyboard_scan.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/common/keyboard_scan.c b/common/keyboard_scan.c index 5e147a1f46..82c811dd92 100644 --- a/common/keyboard_scan.c +++ b/common/keyboard_scan.c @@ -56,7 +56,18 @@ #ifndef CONFIG_KEYBOARD_BOARD_CONFIG /* Use default keyboard scan config, because board didn't supply one */ struct keyboard_scan_config keyscan_config = { +#ifdef CONFIG_KEYBOARD_COL2_INVERTED + /* + * CONFIG_KEYBOARD_COL2_INVERTED is defined for passing the column 2 + * to H1 which inverts the signal. The signal passing through H1 + * adds more delay. Need a larger delay value. Otherwise, pressing + * Refresh key will also trigger T key, which is in the next scanning + * column line. See http://b/156007029. + */ + .output_settle_us = 80, +#else .output_settle_us = 50, +#endif /* CONFIG_KEYBOARD_COL2_INVERTED */ .debounce_down_us = 9 * MSEC, .debounce_up_us = 30 * MSEC, .scan_period_us = 3 * MSEC, |