[RFC 0/3] firmware: scmi: add sanity checks for protocols

[AKASHI Takahiro]

Now that we have the Base protocol support, we will be able to
add a couple of checks so that we will make sure that U-Boot
scmi drivers work as expected.
 - check if SCMI server (firmware) supports the protocol
 - check if SCMI server implements an expected version of protocol

Although adding these checks was one of my objectives in supporting
the Base protocol, this patch series is marked as RFC for now because
I have no confidence about what exact version the existing drivers are
based on.
(I temporarily assigned the version numbers in [1].)

Test
====
The patch series was tested on the following platforms:
* sandbox


Prerequisite:
=============
* This patch series is based on my previous patch of base protocol
  support[1]

[1] https://lists.denx.de/pipermail/u-boot/2023-July/524811.html


Change history:
===============
RFC (Jul, 28, 2023)
* initial release

AKASHI Takahiro (3):
  firmware: scmi: add a check against availability of protocols
  firmware: scmi: add PROTOCOL_VERSION support for existing protocols on
    sandbox
  firmware: scmi: add a sanity check against protocol version

 drivers/clk/clk_scmi.c                     |  6 ++
 drivers/firmware/scmi/sandbox-scmi_agent.c | 80 ++++++++++++++++++++++
 drivers/firmware/scmi/scmi_agent-uclass.c  | 41 ++++++++++-
 drivers/power/regulator/scmi_regulator.c   |  6 ++
 drivers/reset/reset-scmi.c                 | 14 +++-
 include/scmi_protocols.h                   |  6 ++
 6 files changed, 149 insertions(+), 4 deletions(-)

-- 
2.41.0