diff options
| -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 |