Re: [PATCH v4 0/5] PCI: rcar-gen4: irqchip/gic-v3: Handle GIC ITS

[Manivannan Sadhasivam]

On Thu, Jul 09, 2026 at 02:33:22PM +0200, Marek Vasut wrote:
> On 7/9/26 2:19 PM, Manivannan Sadhasivam wrote:
> > On Tue, Jul 07, 2026 at 10:35:38PM +0200, Marek Vasut wrote:
> > > Configure all R-Car Gen4 PCIe controller MSI registers fully, both in
> > > case MSI are enabled and disabled.
> > > 
> > > Patch GIC ITS driver and add quirks for R-Car Gen4 GIC ITS, which is
> > > configured to 32-bit address width for AXI or APB interface.
> > > 
> > > Switch R-Car V4H to use GIC ITS in its DT and describe the GIC ITS
> > > implementation cacheable and shareable limitations.
> > > 
> > > Marek Vasut (5):
> > >    PCI: dwc: Determine whether iMSI is used before calling .init
> > >    PCI: rcar-gen4: Configure AXIINTC if iMSI-RX not used
> > >    irqchip/gic-v3: Refactor GIC600 limited to 32bit PA erratum handling
> > >    irqchip/gic-v3: Add Renesas R-Car Gen4 erratum workaround
> > 
> > Is there a functional dependency between irqchip and PCI patches? Since the
> > irqchip patches touch ARM64 Kconfig etc... I'm wondering if it still need to go
> > through PCI tree.
> I do not believe there is.
> 
> These two configure the PCIe controller hardware:
>   PCI: dwc: Determine whether iMSI is used before calling .init
>   PCI: rcar-gen4: Configure AXIINTC if iMSI-RX not used
> 
> These two fill in GIC ITS quirks:
>   irqchip/gic-v3: Refactor GIC600 limited to 32bit PA erratum handling
>   irqchip/gic-v3: Add Renesas R-Car Gen4 erratum workaround
> 
> This one does yes depend on the two and two patches above, and can only be
> applied once all four aforementioned patches land, otherwise things really
> yes will break:
>   arm64: dts: renesas: r8a779g0: Add GICv3 ITS and update PCIe nodes
> 
> Would you like me to split the series up , or can you and Marc (?) pick the
> relevant parts via matching trees ?

I'll merge the PCI patches and it is Thomas who can merge irqchips ones.

- Mani

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