[coreboot-gerrit] [S] Change in coreboot[master]: device/mdio: Provide helper functions for read and write

[Angel Pons (Code Review)]

Attention is currently required from: Mario Scheithauer.

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/69611 )

Change subject: device/mdio: Provide helper functions for read and write
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Patch Set 4: Code-Review+2

(1 comment)

File src/device/mdio.c:

https://review.coreboot.org/c/coreboot/+/69611/comment/d5ba96cc_9b91454d 
PS4, Line 27: 0
Do you know if the MDIO spec specifies a default value when attempting to read from a non-existing device? It'd be good to use the same value here.

For PCI devices, this value would be all ones.