linux-kernel - [PATCH 0/4] scmi: Bypass set fwnode to address devlink issue

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Message-Id: <20241225-scmi-fwdevlink-v1-0-e9a3a5341362@nxp.com>
Date: Wed, 25 Dec 2024 16:20:43 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Sudeep Holla <sudeep.holla@....com>, 
 Cristian Marussi <cristian.marussi@....com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Saravana Kannan <saravanak@...gle.com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Dong Aisheng <aisheng.dong@....com>, Fabio Estevam <festevam@...il.com>, 
 Shawn Guo <shawnguo@...nel.org>, Jacky Bai <ping.bai@....com>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Sascha Hauer <s.hauer@...gutronix.de>
Cc: arm-scmi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org, 
 imx@...ts.linux.dev, Peng Fan <peng.fan@....com>
Subject: [PATCH 0/4] scmi: Bypass set fwnode to address devlink issue

Current scmi drivers not work well with devlink. This patchset is a
retry to address the issue in [1] which was a few months ago.

Current scmi devices are not created from device tree, they are created
from a scmi_device_id entry of each driver with the protocol matches
with the fwnode reg value, this means there could be multiple devices created
for one fwnode, but the fwnode only has one device pointer.

This patchset is to do more checking before setting the device fwnode.

This may looks like hack, but seems no better way to make scmi works
well with devlink.

[1]: https://lore.kernel.org/arm-scmi/CAGETcx8m48cy-EzP6_uoGN7KWsQw=CfZWQ-hNUzz_7LZ0voG8A@mail.gmail.com/

Cc: 

Signed-off-by: Peng Fan <peng.fan@....com>
---
Peng Fan (4):
      firmware: arm_scmi: bus: Bypass setting fwnode for scmi cpufreq
      firmware: arm_scmi: bus: Bypass setting fwnode for pinctrl
      pinctrl: scmi: Check fwnode instead of machine compatible
      pinctrl: freescale: scmi: Check fwnode instead of machine compatible

 drivers/firmware/arm_scmi/bus.c              | 29 +++++++++++++++++++++++++++-
 drivers/pinctrl/freescale/pinctrl-imx-scmi.c |  7 +------
 drivers/pinctrl/pinctrl-scmi.c               |  7 +------
 3 files changed, 30 insertions(+), 13 deletions(-)
---
base-commit: 8155b4ef3466f0e289e8fcc9e6e62f3f4dceeac2
change-id: 20241225-scmi-fwdevlink-afb5131f19ea

Best regards,
-- 
Peng Fan <peng.fan@....com>