Re: [PATCH] dt-bindings: PCI: rcar-gen4-pci-host: Replace sft_ce IRQ with AER IRQ on R-Car Gen5

[Rob Herring <robh@kernel.org>]

On Sat, Oct 03, 2026 at 11:57:04PM +0200, Marek Vasut wrote:
> The R-Car Gen5 SoC PCIe4 controller does not have dedicated sft_ce IRQ.
> Make that interrupt conditionally available only on R-Car Gen4 SoC PCIe
> controller.
> 
> The R-Car Gen5 SoC PCIe4 controller does have dedicated AER interrupt,
> include it from the beginning. R-Car Gen4 SoC PCIe controller also has
> an AER interrupt, but to retain binding backward compatibility, this
> interrupt is kept optional and added in a separate patchset.
> 
> Fixes: 5b555a496160 ("dt-bindings: PCI: rcar-gen4-pci-host: Add R-Car X5H PCIe4 compatible")
> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
> ---
> Cc: "Krzysztof Wilczyński" <kwilczynski@kernel.org>
> Cc: Bjorn Helgaas <bhelgaas@google.com>
> Cc: Conor Dooley <conor+dt@kernel.org>
> Cc: Geert Uytterhoeven <geert+renesas@glider.be>
> Cc: Koichiro Den <den@valinux.co.jp>
> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
> Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>
> Cc: Manivannan Sadhasivam <mani@kernel.org>
> Cc: Rob Herring <robh@kernel.org>
> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> Cc: devicetree@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-pci@vger.kernel.org
> Cc: linux-renesas-soc@vger.kernel.org
> ---
> NOTE: Gen4 AER is added in https://lore.kernel.org/all/20260928165230.3397664-1-den@valinux.co.jp/
> ---
>  .../bindings/pci/rcar-gen4-pci-host.yaml      | 21 ++++++++++++-------
>  1 file changed, 14 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml b/Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml
> index 362c43a1a15d0..083b77d4de8f7 100644
> --- a/Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml
> +++ b/Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml
> @@ -28,13 +28,6 @@ properties:
>    interrupts:
>      maxItems: 4
>  
> -  interrupt-names:

Keep with just 'maxItems: 4'.

> -    items:
> -      - const: msi
> -      - const: dma
> -      - const: sft_ce
> -      - const: app
> -