diff options
| author | Kane Chen <kane_chen@pegatron.corp-partner.google.com> | 2020-09-23 11:18:06 +0800 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2020-09-25 15:02:07 +0000 |
| commit | 4dcccc83656cfe98af93ef47e6fbc269f16c900d (patch) | |
| tree | 5dc216a64025d3109523857c5754ed9728a30934 /src/mainboard/google | |
| parent | 1861ca4bb81c41e1e811c75c3936fee057593cb4 (diff) | |
mb/google/zork: Modify USB 2.0 PHY parameters for Woomax
Modify USB 2.0 PHY parameters for improve usb eye diagram.
1. USB 2.0 TypeC port0:
.com_pds_tune = 0x03,
.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,
2. USB 2.0 TypeC port3:
.com_pds_tune = 0x03,
.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,
BUG=b:169207729
BRANCH=zork
TEST=emerge-zork coreboot chromeos-bootimage
Signed-off-by: Kane Chen <kane_chen@pegatron.corp-partner.google.com>
Change-Id: I764238485a1a81eb0d4740ac58c80a43f965f550
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45641
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google')
| -rw-r--r-- | src/mainboard/google/zork/variants/woomax/overridetree.cb | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/mainboard/google/zork/variants/woomax/overridetree.cb b/src/mainboard/google/zork/variants/woomax/overridetree.cb index de39891cc1..d1c5507feb 100644 --- a/src/mainboard/google/zork/variants/woomax/overridetree.cb +++ b/src/mainboard/google/zork/variants/woomax/overridetree.cb @@ -22,6 +22,30 @@ 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 = 0x03, + .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 = 0x03, + .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, + }" # USB OC pin mapping register "usb_port_overcurrent_pin[2]" = "USB_OC_NONE" # NC |