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[80.56.215.227]) by smtp.gmail.com with ESMTPSA id 9-20020a170906210900b0073de0506745sm3070147ejt.197.2022.12.02.07.26.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 02 Dec 2022 07:26:47 -0800 (PST) Message-ID: Date: Fri, 2 Dec 2022 16:26:46 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 Subject: Re: [PATCH v2] brcmfmac: Add support for BCM43596 PCIe Wi-Fi To: Konrad Dybcio , Linus Walleij , Kalle Valo Cc: =?UTF-8?Q?Alvin_=c5=a0ipraga?= , Hector Martin , "~postmarketos/upstreaming@lists.sr.ht" <~postmarketos/upstreaming@lists.sr.ht>, "martin.botka@somainline.org" , "angelogioacchino.delregno@somainline.org" , "marijn.suijten@somainline.org" , "jamipkettunen@somainline.org" , Arend van Spriel , Franky Lin , Hante Meuleman , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Marek Vasut , "Zhao, Jiaqing" , "Russell King (Oracle)" , Soon Tak Lee , "linux-wireless@vger.kernel.org" , "brcm80211-dev-list.pdl@broadcom.com" , "SHA-cyfmac-dev-list@infineon.com" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Krzysztof Kozlowski , Rob Herring References: <20220921001630.56765-1-konrad.dybcio@somainline.org> <83b90478-3974-28e6-cf13-35fc4f62e0db@marcan.st> <13b8c67c-399c-d1a6-4929-61aea27aa57d@somainline.org> <0e65a8b2-0827-af1e-602c-76d9450e3d11@marcan.st> <7fd077c5-83f8-02e2-03c1-900a47f05dc1@somainline.org> <20220922133056.eo26da4npkg6bpf2@bang-olufsen.dk> <87sfke32pc.fsf@kernel.org> <4592f87a-bb61-1c28-13f0-d041a6e7d3bf@linaro.org> <87fse76yig.fsf@kernel.org> <87bkov6x1q.fsf@kernel.org> <28991d2d-d917-af47-4f5f-4e8183569bb1@linaro.org> <6e4f1795-08b5-7644-d1fa-102d6d6b47fb@linaro.org> From: Arend van Spriel In-Reply-To: <6e4f1795-08b5-7644-d1fa-102d6d6b47fb@linaro.org> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000006086ef05eed9f728" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --0000000000006086ef05eed9f728 Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 12/2/2022 11:33 AM, Konrad Dybcio wrote: > > > On 1.12.2022 12:31, Arend van Spriel wrote: >> On 11/28/2022 3:40 PM, Konrad Dybcio wrote: >>> >>> >>> On 26.11.2022 22:45, Linus Walleij wrote: >>>> On Fri, Nov 25, 2022 at 1:25 PM Kalle Valo wrote: >>>>> Konrad Dybcio writes: >>>>> >>>>>> On 25.11.2022 12:53, Kalle Valo wrote: >>>>>>> Konrad Dybcio writes: >>>>>>> >>>>>>>> On 21.11.2022 14:56, Linus Walleij wrote: >>>>>>>>> On Fri, Nov 18, 2022 at 5:47 PM Konrad Dybcio 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 >>>> >>>> Something in this direction works too. >>>> >>>> The upside is that it tells all operating systems how to deal >>>> with the firmware for this hardware. >>>> >>>>>>> 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. >>>>> >>>>> It's just that I have understood that Device Tree is supposed to >>>>> describe hardware and to me a firmware directory "brcm/" is a software >>>>> property, not a hardware property. But this is really for the Device >>>>> Tree maintainers to decide, they know this best :) >>>> >>>> I would personally just minimize the amount of information >>>> put into the device tree to be exactly what is needed to find >>>> the right firmware. >>>> >>>> brcm,firmware-compatible = "43596"; >>>> >>>> since the code already knows how to conjure the rest of the string. >>>> >>>> But check with Rob/Krzysztof. >>>> >>>> Yours, >>>> Linus Walleij >>> >>> Krzysztof, Rob [added to CC] - can I have your opinions? >> >> I tried catching up on this thread. Reading it I am not sure what the issue is, but I am happy to dive in. If you can provide a boot log with brcmfmac loaded with module parameter 'debug=0x1416' I can try and make sense of the chipid/devid confusion. > > Hope this helps, thanks! https://hastebin.com/xidagekuge.yaml It does to some extent. It is basically a 4359 revision 9: [ 25.898782] brcmfmac: brcmf_chip_recognition found AXI chip: BCM4359/9 The 4359 entry in pcie.c is applicable for revision 0 and higher (doubtful but that is in the code): BRCMF_FW_ENTRY(BRCM_CC_4359_CHIP_ID, 0xFFFFFFFF, 4359), We need to change the mask above to 0x000001FF and add a new entry with mask 0xFFFFFE00. All we need is come up with a reasonable firmware filename. So can you run the strings command on the firmware you use: $ strings fw.bin | tail -1 and let me know the output. Regards, Arend So for rev 9 we need a new entry --0000000000006086ef05eed9f728 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQdwYJKoZIhvcNAQcCoIIQaDCCEGQCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3OMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS MyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA vbCmXCcsbZ/a0fRIQMBxp4gJnnyeneFYpEtNydrZZ+GeKSMdHiDgXD1UnRSIudKo+moQ6YlCOu4t rVWO/EiXfYnK7zeop26ry1RpKtogB7/O115zultAz64ydQYLe+a1e/czkALg3sgTcOOcFZTXk38e aqsXsipoX1vsNurqPtnC27TWsA7pk4uKXscFjkeUE8JZu9BDKaswZygxBOPBQBwrA5+20Wxlk6k1 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