From 591eec2cd212df50846b22f8d341fa533590a8de Mon Sep 17 00:00:00 2001 From: Daisuke Nojiri Date: Thu, 26 Jan 2017 16:42:21 -0800 Subject: 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 Reviewed-on: https://chromium-review.googlesource.com/433846 Reviewed-by: Vincent Palatin --- driver/tcpm/ps8751.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'driver') 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); -- cgit v1.2.1