Hi Siddharth, Thank you for the patch.
On mer., déc. 18, 2024 at 18:15, Siddharth Vadapalli <s-vadapa...@ti.com> wrote: > Since USB DFU boot is supported on AM62Px SoC, document the steps > required to build the image for USB DFU boot along with the steps to > send images using the "dfu-util" tool. > > Signed-off-by: Siddharth Vadapalli <s-vadapa...@ti.com> Reviewed-by: Mattijs Korpershoek <mkorpersh...@baylibre.com> > --- > This patch has been newly introduced in this series based on the > discussion at: > https://patchwork.ozlabs.org/project/uboot/patch/20241217131658.2920799-3-s-vadapa...@ti.com/#3432702 > > NOTE: This patch should only be merged if all other patches in this > series will also be merged, in order to ensure that the feature is > documented only if it is supported (i.e. all patches in this series > which are required for the feature to be functional have been merged). > > doc/board/ti/am62px_sk.rst | 31 +++++++++++++++++++++++++++++++ > 1 file changed, 31 insertions(+) > > diff --git a/doc/board/ti/am62px_sk.rst b/doc/board/ti/am62px_sk.rst > index 99bdc034869..75451ad76b5 100644 > --- a/doc/board/ti/am62px_sk.rst > +++ b/doc/board/ti/am62px_sk.rst > @@ -124,6 +124,18 @@ Set the variables corresponding to this platform: > :start-after: .. k3_rst_include_start_build_steps_spl_r5 > :end-before: .. k3_rst_include_end_build_steps_spl_r5 > > +* 3.1.1 Alternative build of R5 for DFU boot: > + > + As the SPL size can exceed the limit when building it with support for > + booting from both local storage *and* DFU, in order to disable the > + configs not required for DFU boot, a config fragment should be used > + to not only enable configs for DFU boot, but also disabled the unneeded > + configs. > + > +.. prompt:: bash $ > + > + export UBOOT_CFG_CORTEXR="${UBOOT_CFG_CORTEXR} am62x_r5_usbdfu.config" > + > * 3.2 A53: > > .. include:: ../ti/k3.rst > @@ -290,6 +302,25 @@ https://www.ti.com/lit/pdf/spruj83 under the `Boot Mode > Pins` section. > > For SW2 and SW1, the switch state in the "ON" position = 1. > > +DFU based boot > +-------------- > + > +To boot the board over DFU, set the switches to DFU mode and connect to the > +USB type C DRD port on the board. After power-on the build artifacts needs > to be > +uploaded one by one with a tool like dfu-util. > + > +The initial ROM will have a DFU alt named `bootloader` for the initial R5 spl > +upload. The next stages as exposed by U-Boot have target alts matching the > name > +of the artifacts, for these a USB reset has to be done after each upload. > + > +When using dfu-util the following commands can be used to boot to a U-Boot > shell: > + > +.. prompt:: bash $ > + > + dfu-util -a bootloader -D tiboot3.bin > + dfu-util -R -a tispl -D tispl.bin > + dfu-util -R -a u-boot.img -D u-boot.img > + > Debugging U-Boot > ---------------- > > -- > 2.43.0
