tree 757620b376b902b3d755bdc146827a84b2d049e4
parent a4d0b60cef27687679d72642f4cd05da25ed8461
author Rafał Miłecki <rafal@milecki.pl> 1655405943 +0200
committer Tom Rini <trini@konsulko.com> 1657285617 -0400

fw_env: add fallback to Linux's NVMEM based access

A new DT binding for describing environment data block has been added in
Linux's commit 5db1c2dbc04c ("dt-bindings: nvmem: add U-Boot environment
variables binding"). Once we get a proper Linux NVMEM driver it'll be
possible to use Linux's binary interface for user-space as documented
in the:
https://www.kernel.org/doc/html/latest/driver-api/nvmem.html

This commits makes fw_env fallback to looking for a compatible NVMEM
device in case config file isn't present. In a long term this may make
config files redundant and avoid code (info) duplication.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>