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| author | Daisuke Nojiri <dnojiri@chromium.org> | 2017-01-26 16:42:21 -0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-02-09 12:47:41 -0800 |
| commit | 591eec2cd212df50846b22f8d341fa533590a8de (patch) | |
| tree | 3806a68b582d883c5a27920f3e999d3be9bbddae /driver/tcpm | |
| parent | 60f008c7af5bd6a47659bad2d242f9ddeed55bd7 (diff) | |
| download | chrome-ec-591eec2cd212df50846b22f8d341fa533590a8de.tar.gz | |
Snappy: Recondition USB3.0 RX
The loss between PS8751 and Type-C connector is large and requires
a larger EQ and low squelch threshold for compensation.
- USB Type-c connector facing receiver equalization setting:
Compensate for channel loss up to 10.9dB
- High Speed Signal Detector threshold adjustment: -25%
BUG=chrome-os-partner:61101
BRANCH=none
TEST=Boot & charge
Change-Id: Ie74e2d0b8ad7206f5e60fb013613c382980c0eac
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/433846
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'driver/tcpm')
| -rw-r--r-- | driver/tcpm/ps8751.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/driver/tcpm/ps8751.h b/driver/tcpm/ps8751.h index 71325a7d4b..bd3632bcdb 100644 --- a/driver/tcpm/ps8751.h +++ b/driver/tcpm/ps8751.h @@ -18,6 +18,8 @@ #define PS8751_REG_CTRL_1 0xD0 #define PS8751_REG_CTRL_1_HPD (1 << 0) #define PS8751_REG_CTRL_1_IRQ (1 << 1) +#define PS8751_REG_MUX_USB_C2SS_EQ 0xe7 +#define PS8751_REG_MUX_USB_C2SS_HS_THRESHOLD 0xe8 void ps8751_tcpc_update_hpd_status(int port, int hpd_lvl, int hpd_irq); int ps8751_tcpc_get_fw_version(int port, int *version); |