[PATCH 0/4] Add support for USB DFU boot on AM62Px

[Mattijs Korpershoek]

Hi Siddharth,

Thank you for the series.

On mar., déc. 17, 2024 at 18:46, Siddharth Vadapalli <s-vadapalli at ti.com> wrote:

> Hello,
>
> This series add support for USB DFU boot on TI's AM62Px SoC which has
> two instances of USB Controllers, of which the USB0 instance of USB
> which is a DWC3 USB Controller is used for USB DFU Boot:
> ROM => tiboot3.bin => tispl.bin => u-boot.img
>
> The first patch of this series is based on the suggestion of
> Jonathan Humphreys <j-humpreys at ti.com>
> at:
> https://patchwork.ozlabs.org/project/uboot/cover/20241124070828.617558-1-s-vadapalli@ti.com/#3419733
> which prevents overwriting the "dfu_alt_info" environment variable which
> is set by "spl_dfu_cmd()" for USB DFU boot.
>
> The second patch adds USB DFU environment for AM62Px.
>
> The third patch extends "am62x_r5_usbdfu.config" config fragment for
> being re-used by AM62Px SoC by dropping configs which aren't required
> for USB DFU boot. This is necessary to reduce the size of R5 SPL
> (tiboot3.bin) built for USB DFU boot.
>
> The fourth patch enables USB device-tree nodes for USB DFU functionality
> on AM62Px. Since CONFIG_OF_UPSTREAM is not yet supported for AM62Px, the
> changes are being made in arch/arm/dts/k3-am62p5-sk-u-boot.dtsi at the
> moment, with the intent of making the same changes in the Linux
> device-tree and eventually enabling CONFIG_OF_UPSTREAM to drop the
> changes made in "k3-am62p5-sk-u-boot.dtsi".
>
> Series is based on commit
> 3b3c7280b82 smbios: address build warning
> of the next branch of U-Boot.
>
> The USB DFU config fragments for AM62x are to be re-used for enabling
> USB DFU boot on AM62Px as follows:
> R5  => am62px_evm_r5_defconfig + am62x_r5_usbdfu.config
> A53 => am62px_evm_a53_defconfig + am62x_a53_usbdfu.config
>
> Series has been tested on AM62P5-SK. Logs validating USB DFU boot on
> AM62P5-SK with this series:
> https://gist.github.com/Siddharth-Vadapalli-at-TI/50198ee3348c2db73e0dbd3a14cb0f8b
>
> Series has also been validated on AM625-SK to ensure that the changes
> made to "am62x_r5_usbdfu.config" config fragment being used by AM625-SK
> for USB DFU boot do not cause a regression on AM625-SK w.r.t. USB DFU
> boot. Logs validating USB DFU Boot on AM625-SK with this series:
> https://gist.github.com/Siddharth-Vadapalli-at-TI/85a7579ed2c95330ac71ee3a832cadfb
>
> Regards,
> Siddharth.
>
> Jonathan Humphreys (1):
>   dfu: do not overwrite "dfu_alt_info"
>
> Siddharth Vadapalli (3):
>   board: ti: am62px: env: include environment for DFU Boot
>   configs: am62x_r5_usbdfu: extend for AM62Px
>   arm: dts: k3-am62p5-sk-u-boot: enable USB0 for USB DFU boot

Boot tested this on AM62Px SK EVM using snagrecover:

Boot logs are here: https://paste.debian.net/1340377/

Tested-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>

>
>  arch/arm/dts/k3-am62p5-sk-u-boot.dtsi | 10 ++++++++++
>  board/ti/am62px/am62px.env            |  5 +++--
>  configs/am62x_r5_usbdfu.config        |  3 +++
>  drivers/dfu/dfu.c                     |  7 +++++--
>  4 files changed, 21 insertions(+), 4 deletions(-)
>
> -- 
> 2.43.0