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

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Message-Id: <20240719-beagleplay_fw_upgrade-v1-0-8664d4513252@beagleboard.org>
Date: Fri, 19 Jul 2024 15:15:09 +0530
From: Ayush Singh <ayush@...gleboard.org>
To: 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>
Cc: greybus-dev@...ts.linaro.org, netdev@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, Ayush Singh <ayush@...gleboard.org>
Subject: [PATCH 0/3] Add Firmware Upload support for beagleplay cc1352

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 it's cousins as a co-processor.

Boot 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 Tecnical Specification

Signed-off-by: Ayush Singh <ayush@...gleboard.org>
---
Ayush Singh (3):
      dt-bindings: net: ti,cc1352p7: Add boot-gpio
      arm64: dts: ti: k3-am625-beagleplay: Add boot-gpios to cc1352p7
      greybus: gb-beagleplay: Add firmware upload API

 .../devicetree/bindings/net/ti,cc1352p7.yaml       |   4 +
 arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts     |   3 +-
 drivers/greybus/Kconfig                            |   1 +
 drivers/greybus/gb-beagleplay.c                    | 625 ++++++++++++++++++++-
 4 files changed, 620 insertions(+), 13 deletions(-)
---
base-commit: f76698bd9a8ca01d3581236082d786e9a6b72bb7
change-id: 20240715-beagleplay_fw_upgrade-43e6cceb0d3d

Best regards,
-- 
Ayush Singh <ayush@...gleboard.org>