linux-kernel - Re: [PATCH v3 0/3] Add Firmware Upload support for beagleplay cc1352

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Message-ID: <ldgyloxyvdi2ovpkdmbx443qxolfjlufdkuvgbqjzfw6jskcc6@qwdtctmjo26h>
Date: Mon, 26 Aug 2024 07:50:44 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ayush Singh <ayush@...gleboard.org>
Cc: lorforlinux@...gleboard.org, jkridner@...gleboard.org, 
	robertcnelson@...gleboard.org, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Nishanth Menon <nm@...com>, 
	Vignesh Raghavendra <vigneshr@...com>, Tero Kristo <kristo@...nel.org>, Johan Hovold <johan@...nel.org>, 
	Alex Elder <elder@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	greybus-dev@...ts.linaro.org, netdev@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 0/3] Add Firmware Upload support for beagleplay cc1352

On Sun, Aug 25, 2024 at 10:17:04PM +0530, Ayush Singh wrote:
> Adds support for beagleplay cc1352 co-processor firmware upgrade using
> kernel Firmware Upload API. Uses ROM based bootloader present in
> cc13x2x7 and cc26x2x7 platforms for flashing over UART.
> 
> Communication with the bootloader can be moved out of gb-beagleplay
> driver if required, but I am keeping it here since there are no
> immediate plans to use the on-board cc1352p7 for anything other than
> greybus (BeagleConnect Technology). Additionally, there do not seem to
> any other devices using cc1352p7 or its cousins as a co-processor.
> 
> Bootloader backdoor and reset GPIOs are used to enable cc1352p7 bootloader
> backdoor for flashing. Flashing is skipped in case we are trying to flash
> the same image as the one that is currently present. This is determined by
> CRC32 calculation of the supplied firmware and flash data.
> 
> We also do a CRC32 check after flashing to ensure that the firmware was
> flashed properly.
> 
> Link: https://www.ti.com/lit/ug/swcu192/swcu192.pdf Ti CC1352P7 Technical Specification
> 
> Changes in v3:
> - Spelling fixes in cover letter
> - Add Ack by Rob Herring on Patch 1


Where?

Just use b4 to collect tags.

Best regards,
Krzysztof