diff options
| author | Vincent Palatin <vpalatin@chromium.org> | 2014-05-13 08:46:17 -0700 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-05-14 18:09:36 +0000 |
| commit | aa115bca4371b7956a8d00b09658563f7f3a42b0 (patch) | |
| tree | 41c892a4b5847fe1351337ab5dc7eec31b539227 | |
| parent | 18dcf0989e6e6f7dfa10bb50d055fdb9b5101f4e (diff) | |
| download | chrome-ec-aa115bca4371b7956a8d00b09658563f7f3a42b0.tar.gz | |
zinger: increase OCP threshold
As per hardware team request, use a higher over-current limit to avoid
false positives due to measurement precision margin.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=chrome-os-partner:28331
TEST=use a Zinger connected to an electronic load and trigger the
protection.
Change-Id: If031f6f58b9b7119c6fa3fa3273c08f16cbbbebb
Reviewed-on: https://chromium-review.googlesource.com/199552
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
| -rw-r--r-- | board/zinger/usb_pd_policy.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/board/zinger/usb_pd_policy.c b/board/zinger/usb_pd_policy.c index 3b72902793..1e416f51a0 100644 --- a/board/zinger/usb_pd_policy.c +++ b/board/zinger/usb_pd_policy.c @@ -80,8 +80,8 @@ static timestamp_t fault_deadline; /* convert VBUS current in raw ADC value */ #define VBUS_MA(ma) ((ma)*ADC_SCALE*R_SENSE/1000*CURR_GAIN/VDDA_MV) -/* Max current : 10% over 3A = 3.3A */ -#define MAX_CURRENT VBUS_MA(3300) +/* Max current : 20% over 3A = 3.6A */ +#define MAX_CURRENT VBUS_MA(3600) /* reset over-current after 1 second */ #define OCP_TIMEOUT SECOND |