[PATCH RFC net-next 0/3] net: dsa: mxl862xx: support firmware update

[Daniel Golle]

The MaxLinear MxL862xx switches are running a ZephyrOS-based firmware
which is stored on a dedicated SPI flash chip connected to the switch IC.
When using the switch with DSA a method to allow the host to update the
firmware is needed.

DSA currently doesn't support devlink's flash_update method and
implementing the necessary teardown and subsequent re-probe is not
trivial.

This series is marked as RFC as I'd like to receive feedback regarding
the use of devlink and the teardown/re-probe implementation.

Daniel Golle (3):
  net: dsa: wire flash_update devlink callback to drivers
  net: dsa: mxl862xx: add SMDIO clause-22 register access
  net: dsa: mxl862xx: add devlink flash_update and info_get

 drivers/net/dsa/mxl862xx/Makefile        |   2 +-
 drivers/net/dsa/mxl862xx/mxl862xx-cmd.h  |   1 +
 drivers/net/dsa/mxl862xx/mxl862xx-fw.c   | 434 +++++++++++++++++++++++
 drivers/net/dsa/mxl862xx/mxl862xx-fw.h   |  15 +
 drivers/net/dsa/mxl862xx/mxl862xx-host.c |  42 +++
 drivers/net/dsa/mxl862xx/mxl862xx-host.h |   2 +
 drivers/net/dsa/mxl862xx/mxl862xx.c      |   3 +
 drivers/net/dsa/mxl862xx/mxl862xx.h      |   2 +
 include/net/dsa.h                        |   3 +
 net/dsa/devlink.c                        |  13 +
 10 files changed, 516 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/dsa/mxl862xx/mxl862xx-fw.c
 create mode 100644 drivers/net/dsa/mxl862xx/mxl862xx-fw.h

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2.55.0