[PATCH v5 00/10] Add PCIe Boot support for TI J784S4 SoC

[Tom Rini]

On Thu, Mar 05, 2026 at 04:10:39PM +0530, Siddharth Vadapalli wrote:
> On 05/03/26 11:27, Siddharth Vadapalli wrote:
> > On 05/03/26 00:21, Tom Rini wrote:
> > > On Mon, Feb 16, 2026 at 03:58:28PM +0530, Siddharth Vadapalli wrote:
> > > 
> > > > Hello,
> > > > 
> > > > This series adds PCIe endpoint boot support for the TI J784S4 SoC.
> > > > Series is based on commit
> > > > f9ffeec4bdc board: toradex: Make A53 get RAM size from DT in K3 boards
> > > > of the master branch of U-Boot.
> > > > 
> > > > v4 of this series is at:
> > > > https://patchwork.ozlabs.org/project/uboot/
> > > > cover/20251201110103.845413-1-h-salunke at ti.com/
> > > > Changes since v4:
> > > > - Addressed Udit's feedback:
> > > >    i) Patch 6 has been updated by limiting changes to disabling
> > > > CONFIG_SPL_PCI_ENDPOINT
> > > >       and CONFIG_SPL_PHY (CONFIG_PCIE_CDNS_TI_EP,
> > > > CONFIG_SPL_PHY_CADENCE_TORRENT and
> > > >       CONFIG_SPL_PHY_J721E_WIZ don't need to be disabled as
> > > > pointed out by Udit).
> > > >    ii) Commit message of patch 8 has been updated to indicate
> > > > that although PCIe Boot
> > > >        is supported in Hardware for J742S2 SoC, it is not yet
> > > > enabled in Software.
> > > >    iii) Documentation in patch 10 has been updated with complete
> > > > set of device-tree
> > > >         changes included and the C Program to transfer
> > > > bootloaders has also been
> > > >         simplified and documented with the usage of appropriate
> > > > variable names.
> > > > 
> > > > PCIe Boot Logs (J784S4-EVM running Linux as Root-Complex transfers
> > > > bootloaders to another J784S4-EVM configured for PCIe Boot):
> > > > https://gist.github.com/Siddharth-Vadapalli-at-
> > > > TI/2d157003818441fe79a139d0dec1058a
> > > 
> > > With current next this introduces a failure to build on j784s4_evm_a72.
> > It builds for me without any issues. I have checkout out to next:
> > c0ca147ac62 Merge tag 'u-boot-imx-next-20260228' of
> > https://gitlab.denx.de/ u-boot/custodians/u-boot-imx into next
> > and don't see any issues when building A72 SPL / U-Boot proper for J784S4.
> > 
> > Could you please share the build error that you are observing? Or is it
> > a warning being treated as an error?
> To fix the warning associated with 'subclass_code', I have posted the
> following patch:
> https://patchwork.ozlabs.org/project/uboot/patch/20260305103815.999886-1-s-vadapalli@ti.com/
> 
> Assuming that the above is the fix for the same build failure that you were
> referring to, please let me know if the fix can be taken along with this
> series.

Yes, lets see where that goes, thanks.

-- 
Tom
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