[PATCH v9 3/7] dt-bindings: PCI: Add bindings for Brcmstb EP voltage regulators

[Rob Herring]

On Fri, Nov 19, 2021 at 05:07:50PM -0500, Jim Quinlan wrote:
> Add bindings for Brcmstb EP voltage regulators.  A new mechanism is to be
> added to the Linux PCI subsystem that will allocate and turn on/off
> regulators.  These are standard regulators -- vpcie12v, vpcie3v3, and
> vpcie3v3aux -- placed in the DT in the bridge node under the host bridge
> device.
> 
> The use of a regulator property in the pcie EP subnode such as
> "vpcie12v-supply" depends on a pending pullreq to the pci-bus.yaml
> file at
> 
> https://github.com/devicetree-org/dt-schema/pull/63
> 
> Signed-off-by: Jim Quinlan <jim2101024 at gmail.com>
> ---
>  .../bindings/pci/brcm,stb-pcie.yaml           | 23 +++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
> index 22f2ef446f18..7113a7f726e7 100644
> --- a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
> +++ b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
> @@ -159,5 +159,28 @@ examples:
>                                   <0x42000000 0x1 0x80000000 0x3 0x00000000 0x0 0x80000000>;
>                      brcm,enable-ssc;
>                      brcm,scb-sizes =  <0x0000000080000000 0x0000000080000000>;
> +
> +                    /* PCIe bridge */

Root port specifically. Didn't Pali mention that before?

> +                    pci at 0,0 {
> +                            #address-cells = <3>;
> +                            #size-cells = <2>;
> +                            reg = <0x0 0x0 0x0 0x0 0x0>;
> +                            compatible = "pciclass,0604";
> +                            device_type = "pci";
> +                            vpcie3v3-supply = <&vreg7>;
> +                            ranges;
> +
> +                            /* PCIe endpoint */
> +                            pci-ep at 0,0 {
> +                                    assigned-addresses =
> +                                        <0x82010000 0x0 0xf8000000 0x6 0x00000000 0x0 0x2000>;
> +                                    reg = <0x0 0x0 0x0 0x0 0x0>;
> +                                    compatible = "pci14e4,1688";

> +                                    #address-cells = <3>;
> +                                    #size-cells = <2>;
> +
> +                                    ranges;

These aren't appropriate for an endpoint.

> +                            };
> +                    };
>              };
>      };
> -- 
> 2.17.1
> 
>