diff mbox series

[v11,3/7] dt-bindings: PCI: Add bindings for Brcmstb EP voltage regulators

Message ID 20220106160332.2143-4-jim2101024@gmail.com (mailing list archive)
State New, archived
Headers show
Series PCI: brcmstb: root port turns on sub-device power | expand

Commit Message

Jim Quinlan Jan. 6, 2022, 4:03 p.m. UTC 
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

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
---
 .../bindings/pci/brcm,stb-pcie.yaml           | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

Comments

Florian Fainelli Jan. 6, 2022, 4:09 p.m. UTC | #1 
On 1/6/22 8:03 AM, 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
> 
> Reviewed-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Jim Quinlan <jim2101024@gmail.com>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
index 22f2ef446f18..3e3c8929c97c 100644
--- a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
@@ -159,5 +159,24 @@  examples:
                                  <0x42000000 0x1 0x80000000 0x3 0x00000000 0x0 0x80000000>;
                     brcm,enable-ssc;
                     brcm,scb-sizes =  <0x0000000080000000 0x0000000080000000>;
+
+                    /* PCIe bridge, Root Port */
+                    pci@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@0,0 {
+                                    assigned-addresses =
+                                        <0x82010000 0x0 0xf8000000 0x6 0x00000000 0x0 0x2000>;
+                                    reg = <0x0 0x0 0x0 0x0 0x0>;
+                                    compatible = "pci14e4,1688";
+                            };
+                    };
             };
     };