[coreboot-gerrit] Change in coreboot[master]: mb/google/volteer: Add support for USB Type-C ports

[John Zhao (Code Review)]

John Zhao has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/40425 )

Change subject: mb/google/volteer: Add support for USB Type-C ports
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Patch Set 3:

(1 comment)

https://review.coreboot.org/c/coreboot/+/40425/1/src/mainboard/google/voltee... 
File src/mainboard/google/volteer/acpi/usbc.asl:

PS1:
> > With the generated SSDT PMC.MUX.CONx along with SSDT LPCB.EC0.CREC. […]

We used the kernel 5.4 plus class driver (being assigned GOOG0013) which replaces the extcon driver and the followings coreboot configuration. 
#1 Upstream ToT with SSDT USBC (GOOG0014), change it to be GOOG0013 to align with kernel.
#2 CB:38777 for DSDT PMC:INTC1026 and MUX:INTC105C.  
#3 SSDT version PMC.MUX.CONx for USB Type-c ports.
dmesg shows GOOG0013 and INTC1026 are probed successfully. GOOG0013/INTC1026/INTC105C are shown from /sys/bus/platform/devices. 
USBC GOOG0013 and PMC.MUX.CONx are only shown in the SSDT.dsl. INTC1026 and INTC105C are shown in the DSDT.dsl.

Note: GOOG0014 will be applied instead of the temporarily GOOG0013.