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mb/google/soraka: Fine-tune USB 2.0 port4

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Fine tune usb 2.0 strength for port 4 to pass eye diagram.

BUG=b:65306272
TEST=build on soraka, measure usb2.0 eye diagram, and result is pass.

Change-Id: I2c79e96e2e3dea1364d7b71af19b57f4c9307fcb
Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Reviewed-on: https://review.coreboot.org/21403
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Wisley Chen 2017-09-05 17:14:06 +08:00 committed by Martin Roth
parent 5613b175de
commit 1fbc1927b1
1 changed files with 1 additions and 1 deletions
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src/mainboard/google/poppy/variants/soraka/devicetree.cb
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@ -158,7 +158,7 @@ chip soc/intel/skylake
register "usb2_ports[0]" = "USB2_PORT_LONG(OC0)" # Type-C Port 1
register "usb2_ports[1]" = "USB2_PORT_MID(OC_SKIP)" # Type-A Port
register "usb2_ports[2]" = "USB2_PORT_MID(OC_SKIP)" # Bluetooth
register "usb2_ports[4]" = "USB2_PORT_LONG(OC1)" # Type-C Port 2
register "usb2_ports[4]" = "USB2_PORT_MAX(OC1)" # Type-C Port 2
register "usb2_ports[6]" = "USB2_PORT_MID(OC_SKIP)" # Type-A Port
register "usb2_ports[8]" = "USB2_PORT_MID(OC_SKIP)" # Type-A Port