On Fri, Sep 15, 2023 at 07:30:08PM +0200, Herve Codina wrote: > On Wed, 13 Sep 2023 14:17:30 +0300 > Andy Shevchenko <andriy.shevchenko@xxxxxxxxx> wrote: > > On Tue, Sep 12, 2023 at 02:12:04PM -0500, Rob Herring wrote: > > > On Mon, Sep 11, 2023 at 3:37 PM Andy Shevchenko > > > <andriy.shevchenko@xxxxxxxxx> wrote: > > > > On Tue, Aug 15, 2023 at 10:19:55AM -0700, Lizhi Hou wrote: ... > > > > Can you point out to the ACPI excerpt(s) of the description of anything related > > > > to the device(s) in question? > > > > > > I don't understand what you are asking for. > > > > Through the email thread it was mentioned that this series was tested on the > > ACPI enabled platform, Jonathan (IIRC) asked why do we need to have a shadow > > DT for the something that ACPI already describes. That's why I'm trying to > > understand if it's the case. and if so, how can we improve the approach. > > Patches from Frank Rowand series [1] are needed to create an of_root_node if a DT > was not provided by the firmware, bootloader, etc that run the kernel. > > [1]: https://lore.kernel.org/lkml/20220624034327.2542112-1-frowand.list@xxxxxxxxx/ > > Current Lizhi's series creates nodes from the PCI host node during the PCI > enumeration. It creates PCI-PCI bridge and PCI device nodes. > > I use these series on an ACPI system. > > I need one more missing component: the node related to the PCI host bridge > This was the purpose of Clement's work. This work was not sent upstream yet and I > am working on it in order to have a full tree from the of_root to the PCI device > ie: > of_root <-- Frank Rowand series > + of_host_pci_bridge <-- Clement's work > + pci_bridge <-- Current Lizhi series > + pci_bridge <-- Current Lizhi series > ... > + pci_dev <-- Current Lizhi series > > Hope that this status helped. Thanks for the explanation! I suppose it's better to have three series combined into one and being sent with a better cover letter to explain all this. Also it might make sense (in my opinion) to Cc Jonathan (I did it here). Sorry, Jonathan, if you are not wanting this. -- With Best Regards, Andy Shevchenko
