diff options
| author | Rob Barnes <robbarnes@google.com> | 2021-06-16 15:18:04 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-06-22 16:14:52 +0000 |
| commit | 7a3f5771d52fbcb0189f9402188b5a81c576c8ba (patch) | |
| tree | 307b1b547a64abc16d9b95d299301266b3be882e /board/guybrush | |
| parent | 4ec9bbd593d44d4709737fc4a5c8551f530a088b (diff) | |
| download | chrome-ec-7a3f5771d52fbcb0189f9402188b5a81c576c8ba.tar.gz | |
guybrush: Adjust PS8811 Chan B pre-shoot
Change PS8811 pre-shoot from 3dB to 1.5dB. This was incorrectly set to
3dB due to a misunderstanding of the datsheet.
BUG=b:186586795
TEST=Boot guybrush
BRANCH=None
Signed-off-by: Rob Barnes <robbarnes@google.com>
Change-Id: I49e150433408fc2b44fafb4bed406166f110fbeb
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2964957
Reviewed-by: Rock Chiu <rock.chiu@paradetech.corp-partner.google.com>
Reviewed-by: Diana Z <dzigterman@chromium.org>
Diffstat (limited to 'board/guybrush')
| -rw-r--r-- | board/guybrush/board.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/board/guybrush/board.c b/board/guybrush/board.c index 947f012723..3cbef96449 100644 --- a/board/guybrush/board.c +++ b/board/guybrush/board.c @@ -105,14 +105,14 @@ board_a1_ps8811_retimer_init(const struct usb_mux *me) me, PS8811_REG_PAGE1, PS8811_REG1_USB_CHAN_B_SWING, PS8811_CHAN_B_SWING_MASK, 0x2 << PS8811_CHAN_B_SWING_SHIFT)); - /* Set channel B de-emphasis to -6dB and pre-shoot to 3 dB */ + /* Set channel B de-emphasis to -6dB and pre-shoot to 1.5 dB */ RETURN_ERROR(ps8811_i2c_field_update( me, PS8811_REG_PAGE1, PS8811_REG1_USB_CHAN_B_DE_PS_LSB, - PS8811_CHAN_B_DE_PS_LSB_MASK, PS8811_CHAN_B_DE_6_PS_3_LSB)); + PS8811_CHAN_B_DE_PS_LSB_MASK, PS8811_CHAN_B_DE_6_PS_1_5_LSB)); RETURN_ERROR(ps8811_i2c_field_update( me, PS8811_REG_PAGE1, PS8811_REG1_USB_CHAN_B_DE_PS_MSB, - PS8811_CHAN_B_DE_PS_MSB_MASK, PS8811_CHAN_B_DE_6_PS_3_MSB)); + PS8811_CHAN_B_DE_PS_MSB_MASK, PS8811_CHAN_B_DE_6_PS_1_5_MSB)); return EC_SUCCESS; } |