linux-kernel - Re: [DONOTAPPLY RFC PATCH v2 0/4] WiFi support for samsung,coreprimevelte

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Message-Id: <DEJL1ATTQMVE.120JV9YW59I27@matfyz.cz>
Date: Thu, 27 Nov 2025 16:29:12 +0100
From: "Karel Balej" <balejk@...fyz.cz>
To: "Johannes Berg" <johannes@...solutions.net>,
        "Rob Herring"
 <robh@...nel.org>,
        "Krzysztof Kozlowski" <krzk+dt@...nel.org>,
        "Conor
 Dooley" <conor+dt@...nel.org>,
        Duje Mihanović
 <duje@...emihanovic.xyz>,
        "Andrew Lunn" <andrew@...n.ch>,
        "Gregory Clement"
 <gregory.clement@...tlin.com>,
        "Sebastian Hesselbarth"
 <sebastian.hesselbarth@...il.com>,
        "Brian Norris"
 <briannorris@...omium.org>,
        "Francesco Dolcini" <francesco@...cini.it>,
        "Ulf Hansson" <ulf.hansson@...aro.org>, "Frank Li" <Frank.Li@....com>,
        <linux-wireless@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-mmc@...r.kernel.org>
Cc: <~postmarketos/upstreaming@...ts.sr.ht>, <phone-devel@...r.kernel.org>,
        "Karel Balej" <balejk@...fyz.cz>, "Jeff Chen" <jeff.chen_1@....com>,
        "Peng
 Fan" <peng.fan@....com>, <david@...t.cz>
Subject: Re: [DONOTAPPLY RFC PATCH v2 0/4] WiFi support for
 samsung,coreprimevelte

Hello,

Karel Balej, 2025-10-26T19:20:37+01:00:
> this series adds support for WiFi to the samsung,coreprimevelte
> smartphone (and can be straightforwardly reused for the other known
> Marvell PXA1908-based smartphones).
>
> The series is currently not intended for application as indicated in the
> subject prefix as the firmware necessary for the operation of the chip is not
> available in linux-firmware.
>
> Instead, my intentions are to publish the recent developments regarding
> the chip support (see the third patch of the series) and offer them for
> others to use and if possible get some feedback on them and also
> hopefully to spark some conversation with NXP regarding getting the FW
> into linux-firmware which would allow this series to be mainlined.
>
> Regarding the firmware I have been in contact with Jeff Chen of NXP some
> time ago who promised to ask about it internally – I am thus now gently
> reminding Jeff of the matter. I will also appreciate input from anyone
> else who may help with upstreaming whichever version of the firmware.
>
> The trouble of upstreaming the FW is mostly a legal one (although an up
> to date version of it would also be very welcome) as it is available as
> part of the stock Android of the devices with this chip and can thus be
> used on individual basis, it cannot however be submitted to
> linux-firmware by myself for instance as the license is not known
> (although probably is the same as for the other blobs in the mrvl
> directory) and as the submission would require a sign-off from someone
> involved with NXP.
>
> The third patch in this series fixes a serious issue with the WiFi
> observed on the phone (see the relevant commit message). The form is
> however not directly usptreamable and it is not clear to me how to best
> make it be since it involves changing a data type which probably cannot
> be easily be special-cased for the new chip and would likely break the
> other chips the mwifiex driver supports if applied as is. I will thus
> welcome suggestions on this, although I'm also hopeful that a possible
> reasonably up to date FW would not require this workaround at all.
>
> The series is based on the pxa1908-dt-for-6.19 tag of Duje's tree [1] as
> it contains the necessary SDIO description in the phone's device tree.
>
> I have not applied the trailers sent in response to v1 as it has been
> some time and as this is not expected to be applied anyway.
>
> [1] https://gitlab.com/pxa1908-mainline/linux/-/commits/pxa1908-dt-for-6.19

could I please get some feedback on this?

Mainly I'm wondering whether there is some way I could get this in (the
basic support, without the hack in the third patch) without the firmware
as I have unfortunately not been successful in my communication with NXP
yet. 

To reiterate, the firmware is generally available but is not part of
linux-firmware and the entire process of upstreaming the chipset support
is stuck on that.

Thank you, best regards,
K. B.