of_net: Implement of_get_nvmem_mac_address helper

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It's common practice to store MAC addresses for network interfaces into
nvmem devices. However the code to actually do this in the kernel lacks,
so this patch adds of_get_nvmem_mac_address() for drivers to obtain the
address from an nvmem cell provider.

This is particulary useful on devices where the ethernet interface cannot
be configured by the bootloader, for example because it's in an FPGA.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Mike Looijmans 2018-03-29 07:29:48 +02:00 • committed by David S. Miller

parent 64e828dfc4

commit 9217e566bd

3 changed files with 48 additions and 0 deletions

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2

Documentation/devicetree/bindings/net/ethernet.txt

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40

drivers/of/of_net.c

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6

include/linux/of_net.h

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