回覆: 回覆: [PATCH 5/7] ARM: dts: aspeed-g6: Add PCIe RC node
Jacky Chou
jacky_chou at aspeedtech.com
Wed Jun 25 18:27:26 AEST 2025
> > > > + resets = <&syscon ASPEED_RESET_H2X>,
> > > > + <&syscon ASPEED_RESET_PCIE_RC_O>;
> > > > + reset-names = "h2x", "perst";
> > >
> > > PERST# is clearly a per-Root Port item since it's a signal on the
> > > PCIe connector. Can you separate this and any other per-Root Port
> > > things into a Root Port stanza to leave open the possibility of
> > > future hardware that supports multiple Root Ports in the RC?
> >
> > The PCIe RC that designed by us is only one root port.
>
> Yes. But this driver may be used in the future for other RCs that include more
> than one Root Port, and it would be good if that didn't require structural
> changes to the DT. Also, there are RCs from other vendors that include more
> than one Root Port, and I'd like all the DTs and drivers to have similar
> structure.
Thanks.
Is the "pciec" node in arch/arm/boot/dts/marvell/armada-385.dtsi what you said?
Or could you provide some examples for us to modify our pcie rc node?
Thanks,
Jacky
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