Re: Problems with QCA9377 SDIO on NXP i.MX8MPlus SOM

From: w.wadepohl@posteo.de
To: Bastian Krause <bst@pengutronix.de>
Cc: "Lukas F. Hartmann" <lukas@mntre.com>,
	Gary Bisson <bisson.gary@gmail.com>,
	Kalle Valo <kvalo@kernel.org>,
	ath10k@lists.infradead.org, gary.bisson@boundarydevices.com,
	kernel@pengutronix.de
Subject: Re: Problems with QCA9377 SDIO on NXP i.MX8MPlus SOM
Date: Tue, 05 Sep 2023 05:58:21 +0000	[thread overview]
Message-ID: <6b7a87b601e60052120d8fbb3567df1b@posteo.de> (raw)
In-Reply-To: <c22e2867-5ebb-4337-a9c9-be95621b3e78@pengutronix.de>

We are using a QCA9377 based device (8devices Redbean) with the ath10k 
over SDIO together with kernel 5.10. It works well. We also use qcacld 
for regulative testing purpose. All our patches are mainlined.

Am 04.09.2023 16:28 schrieb Bastian Krause:
> Hi Lukas and everybody else,
> 
> On 6/13/23 17:35, Lukas F. Hartmann wrote:
>> Gary Bisson <bisson.gary@gmail.com> writes:
>> 
>>>> Trying significantly older ath10k from an older kernel is something 
>>>> to
>>>> try in case there are recent regressions in ath10k.
>>>> 
>>>> I don't have an ath10k SDIO device myself so I don't know the state 
>>>> of
>>>> SDIO support in ath10k. Does anyone else from the list know?
>>> 
>>> FYI we have a branch in our repo with the firmware that worked on 
>>> ath10k
>>> at some point [2].
>> 
>> Thanks, I looked at this FW now and it is exactly the same as the
>> "untested" in the ath10k-firmware repo
>> https://github.com/kvalo/ath10k-firmware/tree/master/QCA9377/hw1.0/untested
>> 
>> So if that worked with ath10k several years ago (when?) I could try to
>> reconstruct an older version and try to bisect for a regression, 
>> though
>> I imagine it will be complicated to make these old versions work with
>> APIs that have changed in the meantime in Linux.
> 
> I just wanted to check if I understood this correctly and whether this
> is still the latest information: The QCA9377 connected via SDIO won't
> work with the ath10k driver right now, correct? Neither with [1] nor
> with any other known firmware, right?
> 
> Thanks for the previous information, by the way. I'm also stuck with a
> QCA9377 (Telit module) connected via SDIO and I'm not too keen on using
> the qcacld driver. With Kernel 6.5, I see basically the same output as
> pasted here [2] with slightly different register dumps.
> 
> Regards,
> Bastian
> 
> [1]
> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/ath10k/QCA9377/hw1.0
> [2] https://gist.github.com/mntmn/7d18cba485572bf0690267f37647cacb

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