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mb/google/zork: update USB 2.0 controller Lane Parameter for berknip 

Enhance USB 2.0 C0/C1 A0/A1 SI by increasing the level of
"HS DC Voltage Level" and " Disconnect Threshold Adjustment" registers.
COMPDISTUNE0: 0x3->0x7
TXVREFTUNE0: 0x6->0xf

BUG=b:166398726
BRANCH=zork
TEST=1. emerge-zork coreboot
     2. check U2 register is set correctly.
     3. U2 SI all pass

Change-Id: I69d942605c6d43ece0d71f67df3a5e00b998219b
Signed-off-by: Kevin Chiu <kevin.chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46545
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Kevin Chiu 2020-10-19 14:16:48 +08:00 committed by Felix Held
parent 062b92ef65
commit d3318cfe49
1 changed files with 48 additions and 0 deletions
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48
src/mainboard/google/zork/variants/berknip/overridetree.cb
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@ -21,6 +21,54 @@ chip soc/amd/picasso
register "telemetry_vddcr_soc_offset" = "0"
# End : OPN Performance Configuration
# USB 2.0 strength
register "usb_2_port_tune_params[0]" = "{
.com_pds_tune = 0x07,
.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 = 0xf,
.tx_hsxv_tune = 0x3,
.tx_res_tune = 0x01,
}"
register "usb_2_port_tune_params[1]" = "{
.com_pds_tune = 0x07,
.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 = 0xf,
.tx_hsxv_tune = 0x3,
.tx_res_tune = 0x01,
}"
register "usb_2_port_tune_params[2]" = "{
.com_pds_tune = 0x07,
.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 = 0xf,
.tx_hsxv_tune = 0x3,
.tx_res_tune = 0x01,
}"
register "usb_2_port_tune_params[3]" = "{
.com_pds_tune = 0x07,
.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 = 0xf,
.tx_hsxv_tune = 0x3,
.tx_res_tune = 0x01,
}"
# Enable I2C2 for trackpad, touchscreen, pen at 400kHz
register "i2c[2]" = "{