diff options
| author | Ryan Zhang <Ryan.Zhang@quantatw.com> | 2017-03-01 16:29:23 +0800 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2017-03-10 01:47:43 +0000 |
| commit | 1c39223ff9f970be69a62cbf4302fa3aa8f57647 (patch) | |
| tree | 8b64d58d77789b7473cbf22470b57be9939b8cfb | |
| parent | 063422ecb17597dc87418bc8a80bc00234194423 (diff) | |
| download | chrome-ec-1c39223ff9f970be69a62cbf4302fa3aa8f57647.tar.gz | |
Electro: DP CTS testing failed in HBR2 deterministic Jitter
Uploading CL according EE's requirement.
Need to overwrite PS8751 Address: 0x16, offset: 0xD3, Data: 0x98
BUG=b:36044164
BRANCH=firmware-reef-9042.B
TEST=`make -j BOARD=reef`
Change-Id: I60d5c6724fd047770ddd0af1d204571d59c6e25e
Signed-off-by: Ryan Zhang <Ryan.Zhang@quantatw.com>
Reviewed-on: https://chromium-review.googlesource.com/451047
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Commit-Queue: Ryan Zhang <ryan.zhang@quanta.corp-partner.google.com>
Tested-by: Ryan Zhang <ryan.zhang@quanta.corp-partner.google.com>
| -rw-r--r-- | board/reef/board.c | 4 | ||||
| -rw-r--r-- | driver/tcpm/ps8751.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/board/reef/board.c b/board/reef/board.c index 0df05cb832..1ffea79835 100644 --- a/board/reef/board.c +++ b/board/reef/board.c @@ -390,6 +390,10 @@ void board_tcpc_init(void) mux->hpd_update(port, 0, 0); } + + /* 0x98 sets lower EQ of DP port (4.5db) */ + i2c_write8(NPCX_I2C_PORT0_1, 0x16, PS8751_REG_MUX_DP_EQ_Configuration, + 0x98); } DECLARE_HOOK(HOOK_INIT, board_tcpc_init, HOOK_PRIO_INIT_I2C+1); diff --git a/driver/tcpm/ps8751.h b/driver/tcpm/ps8751.h index bd3632bcdb..0b91572c34 100644 --- a/driver/tcpm/ps8751.h +++ b/driver/tcpm/ps8751.h @@ -18,6 +18,7 @@ #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_DP_EQ_Configuration 0xD3 #define PS8751_REG_MUX_USB_C2SS_EQ 0xe7 #define PS8751_REG_MUX_USB_C2SS_HS_THRESHOLD 0xe8 |