diff options
| author | Kevin Chiu <kevin.chiu@quantatw.com> | 2020-10-18 17:19:22 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2020-10-21 12:53:17 +0000 |
| commit | 9cc148d8c50df689e6647132746026c3354a2700 (patch) | |
| tree | 714e403ff583aa34b2018bcd2ccf59662e979deb /src | |
| parent | 0088b3df28938d03039e78a780508d5351adea13 (diff) | |
mb/google/zork: update USB 2.0 controller Lane Parameter for morphius
Enhance USB 2.0 SI by increasing the level of "HS DC Voltage Level"
and "Disconnect Threshold Adjustment".
COMPDISTUNE0: 0x3->0x7
TXVREFTUNE0: 0x6->0xf
BUG=b:162614573
BRANCH=zork
TEST=1. emerge-zork coreboot
2. check U2 registers are set correctly
3. test with servo v4 type-c, it's working expectedly.
4. U2 SI pass
Signed-off-by: Kevin Chiu <kevin.chiu@quantatw.com>
Change-Id: I278cc0aaddbc9fce595bf57ca69ee8abfc9f5659
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46537
Reviewed-by: Rob Barnes <robbarnes@google.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/zork/variants/morphius/overridetree.cb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/mainboard/google/zork/variants/morphius/overridetree.cb b/src/mainboard/google/zork/variants/morphius/overridetree.cb index ecadb072c1..66b371be04 100644 --- a/src/mainboard/google/zork/variants/morphius/overridetree.cb +++ b/src/mainboard/google/zork/variants/morphius/overridetree.cb @@ -35,6 +35,19 @@ chip soc/amd/picasso .ports.xhci0_port2 = 1, /* Left USB3A port 2 */ }" + # USB 2.0 strength + 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]" = "{ .speed = I2C_SPEED_FAST, |