Re: [PATCH v2 1/2] ARM: dts: bcm2711-rpi-4-b: Fix pcie0's unit address formatting

[Rob Herring]

On Tue, Aug 31, 2021 at 7:59 AM Nicolas Saenz Julienne
<nsaenzju@xxxxxxxxxx> wrote:
>
> dtbs_check currently complains that:
>
> arch/arm/boot/dts/bcm2711-rpi-4-b.dts:220.10-231.4: Warning
> (pci_device_reg): /scb/pcie@7d500000/pci@1,0: PCI unit address format
> error, expected "0,0"
>
> Unsurprisingly pci@0,0 is the right address, as illustrated by its reg
> property:
>
>     &pcie0 {
>             pci@0,0 {
>                     /*
>                      * As defined in the IEEE Std 1275-1994 document,
>                      * reg is a five-cell address encoded as (phys.hi
>                      * phys.mid phys.lo size.hi size.lo). phys.hi
>                      * should contain the device's BDF as 0b00000000
>                      * bbbbbbbb dddddfff 00000000. The other cells
>                      * should be zero.
>                      */
>                     reg = <0 0 0 0 0>;
>             };
>     };
>
> The device is clearly 0. So fix it.
>
> Also add a missing 'device_type = "pci"'.
>
> Fixes: 258f92d2f840 ("ARM: dts: bcm2711: Add reset controller to xHCI node")
> Suggested-by: Rob Herring <robh@xxxxxxxxxx>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzju@xxxxxxxxxx>
> ---
>
> Changes since v1:
>  - s/bus/device/ when talking about unit addresses
>  - Add device_type
>  - Add Suggested-by
>
>  arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Rob Herring <robh@xxxxxxxxxx>