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mb/google/rex: Mark unused USB ports as empty 

This patch marks unused USB ports (USB2.0/TCSS) empty to avoid
prompting wrong dmesg as below.

   ```
  usb usb2-port3: Cannot enable. Maybe the USB cable is bad?
   ```
Mainboard variants to override the USB ports as per the target
board design.

TEST=Able to build and boot google/rex with all USB ports are
working as expected.

Change-Id: Ic3d21151a22f2318413f480f3386bf2dbf696307
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73027
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
This commit is contained in:
Subrata Banik 2023-02-14 17:36:51 +05:30 committed by Eric Lai
parent 57987b6e19
commit 45df1066ef
1 changed files with 19 additions and 0 deletions
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19
src/mainboard/google/rex/variants/baseboard/rex/devicetree.cb
View File

@ -11,6 +11,25 @@ chip soc/intel/meteorlake
# EC memory map range is 0x900-0x9ff
register "gen3_dec" = "0x00fc0901"
register "usb2_ports[0]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 0
register "usb2_ports[1]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 1
register "usb2_ports[2]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 2
register "usb2_ports[3]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 3
register "usb2_ports[4]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 4
register "usb2_ports[5]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 5
register "usb2_ports[6]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 6
register "usb2_ports[7]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 7
register "usb2_ports[8]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 8
register "usb2_ports[9]" = "USB2_PORT_EMPTY" # Disable USB2.0 Port 9
register "usb3_ports[0]" = "USB3_PORT_EMPTY" # Disable USB3.0 Port 0
register "usb3_ports[1]" = "USB3_PORT_EMPTY" # Disable USB3.0 Port 1
register "tcss_ports[0]" = "TCSS_PORT_EMPTY" # Disable USB-C Port 0
register "tcss_ports[1]" = "TCSS_PORT_EMPTY" # Disable USB-C Port 1
register "tcss_ports[2]" = "TCSS_PORT_EMPTY" # Disable USB-C Port 2
register "tcss_ports[3]" = "TCSS_PORT_EMPTY" # Disable USB-C Port 3
# S0ix enable
register "s0ix_enable" = "1"