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Date:   Wed, 5 Apr 2023 10:44:07 +0200
From:   =?UTF-8?B?S8O2cnk=?= Maincent <kory.maincent@bootlin.com>
To:     Amitkumar Karwar <amitkarwar@gmail.com>,
        Ganapathi Bhat <ganapathi017@gmail.com>,
        Sharvari Harisangam <sharvari.harisangam@nxp.com>,
        Xinming Hu <huxinming820@gmail.com>
Cc:     linux-wireless@vger.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: mwifiex not working on PCIe Laird st60
Message-ID: <20230405104407.45c5700f@kmaincent-XPS-13-7390>
Organization: bootlin
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Hello,

I would like to report that the mwifiex driver is not working for the PCIe
Laird st60 Wifi module.
The Laird constructor is using its own driver (as usual :/):
https://github.com/LairdCP/Sterling-60-Release-Packages/releases

The mwifiex driver stall on the mwifiex_check_fw_status function.
Indeed the fw status id received is not what expected.
- If I use the firmware from linux-firmware (pcieusb8997_combo_v4.bin) the
  status is 0x0.
- If I use the firmware from Laird Github, the status is first 0x0 then
  0xf1f2f4a5 after 1/2s. Weirdly this id match the mwl8k firmware status.

The expected status should be 0xfedcba00 (also used in the Laird module) as
you can see it does not match it. I don't know well how this driver works a=
lso I
don't have datasheet of the module nor the chipset.
I hope someone could take a look at it or give me some debugging hints.

Regards,
K=C3=B6ry