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[80.56.140.230]) by smtp.gmail.com with ESMTPSA id r3sm769809ejr.79.2022.01.08.12.14.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 08 Jan 2022 12:14:22 -0800 (PST) Message-ID: <199f0a6d-f80d-1600-842d-44fba9b7d5fc@broadcom.com> Date: Sat, 8 Jan 2022 21:14:19 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.4.0 Subject: Re: [PATCH v2 10/35] brcmfmac: firmware: Allow platform to override macaddr To: Hector Martin , Kalle Valo , "David S. Miller" , Jakub Kicinski , Rob Herring , "Rafael J. Wysocki" , Len Brown , Arend van Spriel , Franky Lin , Hante Meuleman , Chi-hsien Lin , Wright Feng , Dmitry Osipenko Cc: Sven Peter , Alyssa Rosenzweig , Mark Kettenis , =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= , Pieter-Paul Giesberts , Linus Walleij , Hans de Goede , "John W. Linville" , "brian m. carlson" , Andy Shevchenko , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, SHA-cyfmac-dev-list@infineon.com References: <20220104072658.69756-1-marcan@marcan.st> <20220104072658.69756-11-marcan@marcan.st> From: Arend van Spriel In-Reply-To: <20220104072658.69756-11-marcan@marcan.st> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000e0aeca05d517bfa3" Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org --000000000000e0aeca05d517bfa3 Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 1/4/2022 8:26 AM, Hector Martin wrote: > On Device Tree platforms, it is customary to be able to set the MAC > address via the Device Tree, as it is often stored in system firmware. > This is particularly relevant for Apple ARM64 platforms, where this > information comes from system configuration and passed through by the > bootloader into the DT. > > Implement support for this by fetching the platform MAC address and > adding or replacing the macaddr= property in nvram. This becomes the > dongle's default MAC address. > > On platforms with an SROM MAC address, this overrides it. On platforms > without one, such as Apple ARM64 devices, this is required for the > firmware to boot (it will fail if it does not have a valid MAC at all). What overrides what. Can you elaborate a bit? Reviewed-by: Arend van Spriel > Reviewed-by: Linus Walleij > Signed-off-by: Hector Martin > --- > .../broadcom/brcm80211/brcmfmac/firmware.c | 29 +++++++++++++++++-- > 1 file changed, 27 insertions(+), 2 deletions(-) --000000000000e0aeca05d517bfa3 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 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