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| author | Vic Yang <victoryang@chromium.org> | 2013-06-22 01:14:43 +0800 |
|---|---|---|
| committer | ChromeBot <chrome-bot@google.com> | 2013-06-21 10:17:38 -0700 |
| commit | 3c1b2b757546c022d0ae0eb22e3db9feb41055c4 (patch) | |
| tree | 3d30a20675aef499d8041e6f0f17aa192ed6d0ed | |
| parent | 088a65615df492adce57244db86af9f04eb93ca4 (diff) | |
| download | chrome-ec-3c1b2b757546c022d0ae0eb22e3db9feb41055c4.tar.gz | |
spring: Wait 80ms for CABLE_DET to be asserted
From our measurement, it takes ~80ms for CABLE_DET to be asserted. Let's
wait for that long before giving up and declare it an USB host.
BUG=chrome-os-partner:20405
TEST=Manual
BRANCH=Spring
Change-Id: I71568ed8011f9b3f2c9c2ee67aea3c771a5dbf37
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/59566
| -rw-r--r-- | board/spring/usb_charging.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/board/spring/usb_charging.c b/board/spring/usb_charging.c index 21624a2fcc..8c49064006 100644 --- a/board/spring/usb_charging.c +++ b/board/spring/usb_charging.c @@ -78,6 +78,7 @@ #define DELAY_POWER_MS 20 #define DELAY_USB_DP_DN_MS 20 #define DELAY_ID_MUX_MS 30 +#define DELAY_CABLE_DET_MS 80 static int current_dev_type = TSU6721_TYPE_NONE; static int nominal_pwm_duty; @@ -268,7 +269,7 @@ static int board_probe_video(int device_type) { tsu6721_disable_interrupts(); gpio_set_level(GPIO_ID_MUX, 1); - msleep(DELAY_ID_MUX_MS); + msleep(DELAY_ID_MUX_MS + DELAY_CABLE_DET_MS); if (adc_read_channel(ADC_CH_USB_DP_SNS) < VIDEO_ID_THRESHOLD) { if (device_type & TSU6721_TYPE_VBUS_DEBOUNCED) { |