Re: [PATCH] ARM: dts: bcm4709: fix bus range assignment

[Rosen Penev]

On Mon, Apr 13, 2026 at 2:21 AM Arnd Bergmann <arnd@xxxxxxxxxx> wrote:
>
> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> The netgear r8000 dts file limits the bus range for the first host
> bridge to exclude bus 0, but the two devices on the first bus are
> explicitly assigned to bus 0, causing a build time warning:
>
> /home/arnd/arm-soc/arch/arm/boot/dts/broadcom/bcm4709-netgear-r8000.dts:142.3-27: Warning (pci_device_bus_num): /axi@18000000/pcie@13000/pcie@0/pcie@0,0/pcie@1,0:bus-range: PCI bus number 0 out of range, expected (1 - 255)
> /home/arnd/arm-soc/arch/arm/boot/dts/broadcom/bcm4709-netgear-r8000.dts:142.3-27: Warning (pci_device_bus_num): /axi@18000000/pcie@13000/pcie@0/pcie@0,0/pcie@2,0:bus-range: PCI bus number 0 out of range, expected (1 - 255)
>
> I could not find any reason why this is done in the first place, but
> this can be easily addressed by reassigning the two devices to
> bus 1, or by dropping the bus-range property in order to allow
> secondary bus 0 to be assigned.
>
> Assuming the bus-range is intentional, fix this by moving the
> devices to the first valid secondary bus number.
No, bus-range is not intentional. It should be removed instead.
>
> Fixes: 893faf67438c ("ARM: dts: BCM5301X: add root pcie bridges")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
>  arch/arm/boot/dts/broadcom/bcm4709-netgear-r8000.dts | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/boot/dts/broadcom/bcm4709-netgear-r8000.dts b/arch/arm/boot/dts/broadcom/bcm4709-netgear-r8000.dts
> index d170c71cbd76..355be5014943 100644
> --- a/arch/arm/boot/dts/broadcom/bcm4709-netgear-r8000.dts
> +++ b/arch/arm/boot/dts/broadcom/bcm4709-netgear-r8000.dts
> @@ -147,7 +147,7 @@ pcie@0,0 {
>
>                 pcie@1,0 {
>                         device_type = "pci";
> -                       reg = <0x800 0 0 0 0>;
> +                       reg = <0x10800 0 0 0 0>;
>
>                         #address-cells = <3>;
>                         #size-cells = <2>;
> @@ -162,7 +162,7 @@ wifi@0,0 {
>
>                 pcie@2,0 {
>                         device_type = "pci";
> -                       reg = <0x1000 0 0 0 0>;
> +                       reg = <0x11000 0 0 0 0>;
>
>                         #address-cells = <3>;
>                         #size-cells = <2>;
> --
> 2.39.5
>