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Date:   Fri, 25 Nov 2022 13:10:53 +0100
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Subject: Re: [PATCH v2] brcmfmac: Add support for BCM43596 PCIe Wi-Fi
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To:     Kalle Valo <kvalo@kernel.org>
Cc:     Linus Walleij <linus.walleij@linaro.org>,
        =?UTF-8?Q?Alvin_=c5=a0ipraga?= <ALSI@bang-olufsen.dk>,
        Hector Martin <marcan@marcan.st>,
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        <brcm80211-dev-list.pdl@broadcom.com>,
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References: <20220921001630.56765-1-konrad.dybcio@somainline.org>
 <83b90478-3974-28e6-cf13-35fc4f62e0db@marcan.st>
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 <7fd077c5-83f8-02e2-03c1-900a47f05dc1@somainline.org>
 <CACRpkda3uryD6TOEaTi3pPX5No40LBWoyHR4VcEuKw4iYT0dqA@mail.gmail.com>
 <20220922133056.eo26da4npkg6bpf2@bang-olufsen.dk> <87sfke32pc.fsf@kernel.org>
 <4592f87a-bb61-1c28-13f0-d041a6e7d3bf@linaro.org>
 <CACRpkdax-3VVDd29iH51mfumakqM7jyEc8Pbb=AQwAgp2WsqFQ@mail.gmail.com>
 <d03bd4d4-e4ef-681b-b4a5-02822e1eee75@linaro.org> <87fse76yig.fsf@kernel.org>
From:   Konrad Dybcio <konrad.dybcio@linaro.org>
In-Reply-To: <87fse76yig.fsf@kernel.org>
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On 25.11.2022 12:53, Kalle Valo wrote:
> Konrad Dybcio <konrad.dybcio@linaro.org> writes:
> 
>> On 21.11.2022 14:56, Linus Walleij wrote:
>>> On Fri, Nov 18, 2022 at 5:47 PM Konrad Dybcio <konrad.dybcio@linaro.org> wrote:
>>>
>>>> I can think of a couple of hacky ways to force use of 43596 fw, but I
>>>> don't think any would be really upstreamable..
>>>
>>> If it is only known to affect the Sony Xperias mentioned then
>>> a thing such as:
>>>
>>> if (of_machine_is_compatible("sony,xyz") ||
>>>     of_machine_is_compatible("sony,zzz")... ) {
>>>    // Enforce FW version
>>> }
>>>
>>> would be completely acceptable in my book. It hammers the
>>> problem from the top instead of trying to figure out itsy witsy
>>> details about firmware revisions.
>>>
>>> Yours,
>>> Linus Walleij
>>
>> Actually, I think I came up with a better approach by pulling a page
>> out of Asahi folks' book - please take a look and tell me what you
>> think about this:
>>
>> [1]
>> https://github.com/SoMainline/linux/commit/4b6fccc995cd79109b0dae4e4ab2e48db97695e7
>> [2]
>> https://github.com/SoMainline/linux/commit/e3ea1dc739634f734104f37fdbed046873921af7
> 
> Instead of a directory path ("brcm/brcmfmac43596-pcie") why not provide
> just the chipset name ("brcmfmac43596-pcie")? IMHO it's unnecessary to
> have directory names in Device Tree.
I think it's common practice to include a full $FIRMWARE_DIR-relative
path when specifying firmware in DT, though here I left out the board
name bit as that's assigned dynamically anyway. That said, if you don't
like it, I can change it.

Konrad
>