From d8c189b669a8b98448f287fa0872d440b8892dd1 Mon Sep 17 00:00:00 2001 From: Lucas Chen Date: Fri, 30 Oct 2020 14:11:26 +0800 Subject: zork/var/ezkinil: Adjust USB2 phy si fine tune on DVT Board Adjust USB2 phy si setting fine tune on DVT for Ezkinil. BRANCH=zork BUG=b:156315391 TEST=Measuring scope timing and test usb detection Signed-off-by: Lucas Chen Change-Id: Id537b6e9a17f47481b6aedcea0c6a8474d993b6d Reviewed-on: https://review.coreboot.org/c/coreboot/+/47011 Tested-by: build bot (Jenkins) Reviewed-by: Rob Barnes Reviewed-by: Aaron Durbin --- .../google/zork/variants/ezkinil/overridetree.cb | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'src/mainboard/google/zork') diff --git a/src/mainboard/google/zork/variants/ezkinil/overridetree.cb b/src/mainboard/google/zork/variants/ezkinil/overridetree.cb index 4fd7e0e063..2537ee8fc4 100644 --- a/src/mainboard/google/zork/variants/ezkinil/overridetree.cb +++ b/src/mainboard/google/zork/variants/ezkinil/overridetree.cb @@ -29,6 +29,31 @@ chip soc/amd/picasso .ports.xhci0_port3 = 1, }" + #USB 2.0 strength + register "usb_2_port_tune_params[2]" = "{ + .com_pds_tune = 0x05, + .sq_rx_tune = 0x3, + .tx_fsls_tune = 0x3, + .tx_pre_emp_amp_tune = 0x03, + .tx_pre_emp_pulse_tune = 0x0, + .tx_rise_tune = 0x1, + .rx_vref_tune = 0x9, + .tx_hsxv_tune = 0x3, + .tx_res_tune = 0x01, + }" + + register "usb_2_port_tune_params[3]" = "{ + .com_pds_tune = 0x05, + .sq_rx_tune = 0x3, + .tx_fsls_tune = 0x3, + .tx_pre_emp_amp_tune = 0x03, + .tx_pre_emp_pulse_tune = 0x0, + .tx_rise_tune = 0x1, + .rx_vref_tune = 0x9, + .tx_hsxv_tune = 0x3, + .tx_res_tune = 0x01, + }" + # Enable I2C2 for trackpad, touchscreen, pen at 400kHz register "i2c[2]" = "{ .speed = I2C_SPEED_FAST, -- cgit v1.2.3