From: Hector Martin <marcan@marcan.st>
To: Linus Walleij <linus.walleij@linaro.org>,
Konrad Dybcio <konrad.dybcio@somainline.org>
Cc: ~postmarketos/upstreaming@lists.sr.ht,
martin.botka@somainline.org,
angelogioacchino.delregno@somainline.org,
marijn.suijten@somainline.org, jamipkettunen@somainline.org,
"Arend van Spriel" <aspriel@gmail.com>,
"Franky Lin" <franky.lin@broadcom.com>,
"Hante Meuleman" <hante.meuleman@broadcom.com>,
"Kalle Valo" <kvalo@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Alvin Šipraga" <alsi@bang-olufsen.dk>,
"Marek Vasut" <marex@denx.de>,
"Zhao, Jiaqing" <jiaqing.zhao@intel.com>,
"Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>,
"Soontak Lee" <soontak.lee@cypress.com>,
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
Subject: Re: [PATCH v2] brcmfmac: Add support for BCM43596 PCIe Wi-Fi
Date: Thu, 22 Sep 2022 22:08:19 +0900 [thread overview]
Message-ID: <e620b07d-e53e-edae-1078-2a776abf1e17@marcan.st> (raw)
In-Reply-To: <CACRpkda3uryD6TOEaTi3pPX5No40LBWoyHR4VcEuKw4iYT0dqA@mail.gmail.com>
On 22/09/2022 22.02, Linus Walleij wrote:
> On Thu, Sep 22, 2022 at 12:21 PM Konrad Dybcio
> <konrad.dybcio@somainline.org> wrote:
>
>> Also worth noting is the 'somc' bit, meaning there are probably *some* SONY
>> customizations, but that's also just a guess.
>
> What I have seen from BRCM customizations on Samsung phones is that
> the per-device customization of firmware seems to involve the set-up of
> some GPIO and power management pins. For example if integrated with
> an SoC that has autonomous system resume, or if some GPIO line has
> to be pulled to enable an external regulator or PA.
>
> To the best of my knowledge that customization is done by consultants
> from Broadcom when working with the device manufacturer, and
> eventually they roll a unique firmware for the device. Probably because
> the firmware can only be signed for execution by Broadcom?
I don't think the firmware is signed, they probably just don't want to
share the source code with most customers? (Except Apple maybe, but
Apple gets custom silicon too...).
- Hector
next prev parent reply other threads:[~2022-09-22 13:08 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-21 0:16 Konrad Dybcio
2022-09-21 4:37 ` Hector Martin
2022-09-21 21:26 ` Konrad Dybcio
2022-09-22 6:40 ` Hector Martin
2022-09-22 10:21 ` Konrad Dybcio
2022-09-22 13:02 ` Linus Walleij
2022-09-22 13:08 ` Hector Martin [this message]
2022-09-22 13:30 ` Alvin Šipraga
2022-09-22 20:18 ` Linus Walleij
2022-09-26 8:20 ` Stockholm syndrome with Linux wireless? Kalle Valo
2022-09-26 8:59 ` Russell King (Oracle)
2022-10-03 19:40 ` Linus Walleij
2022-10-20 14:09 ` Linus Walleij
2022-10-20 14:44 ` Dave Taht
2022-09-26 9:27 ` [PATCH v2] brcmfmac: Add support for BCM43596 PCIe Wi-Fi Kalle Valo
2022-11-18 16:47 ` Konrad Dybcio
2022-11-21 13:56 ` Linus Walleij
2022-11-25 11:42 ` Konrad Dybcio
2022-11-25 11:53 ` Kalle Valo
2022-11-25 12:10 ` Konrad Dybcio
2022-11-25 12:25 ` Kalle Valo
2022-11-26 21:45 ` Linus Walleij
2022-11-28 11:17 ` Kalle Valo
2022-11-28 14:40 ` Konrad Dybcio
2022-11-29 9:19 ` Krzysztof Kozlowski
2022-12-01 11:31 ` Arend van Spriel
2022-12-02 10:33 ` Konrad Dybcio
2022-12-02 15:26 ` Arend van Spriel
2022-12-02 19:28 ` Arend Van Spriel
2022-12-06 9:58 ` Konrad Dybcio
2022-12-06 11:22 ` Arend van Spriel
2022-12-07 10:12 ` Konrad Dybcio
2022-12-06 23:37 ` Linus Walleij
2022-12-07 7:41 ` Arend Van Spriel
2022-12-07 13:42 ` Linus Walleij
2022-12-07 22:26 ` Arend van Spriel
2022-12-07 8:57 ` Konrad Dybcio
2022-12-07 11:10 ` Arend van Spriel
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