[PATCH V2 1/2] dt-bindings: PCI: brcmstb: add BCM4908 binding

[Rafał Miłecki]

From: Rafał Miłecki <rafal at milecki.pl>

BCM4908 is a SoC family with PCIe controller sharing design with the one
for STB. BCM4908 has different power management and memory controller so
few tweaks are required.

PERST# signal on BCM4908 is handled by an external MISC block so it
needs specifying a reset phandle.

Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
Acked-by: Florian Fainelli <f.fainelli at gmail.com>
---
 .../bindings/pci/brcm,stb-pcie.yaml           | 30 +++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
index 807694b4f41f..d3ab9e22f97c 100644
--- a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
@@ -14,6 +14,7 @@ properties:
     items:
       - enum:
           - brcm,bcm2711-pcie # The Raspberry Pi 4
+          - brcm,bcm4908-pcie
           - brcm,bcm7211-pcie # Broadcom STB version of RPi4
           - brcm,bcm7278-pcie # Broadcom 7278 Arm
           - brcm,bcm7216-pcie # Broadcom 7216 Arm
@@ -64,8 +65,6 @@ properties:
   aspm-no-l0s: true
 
   resets:
-    description: for "brcm,bcm7216-pcie", must be a valid reset
-      phandle pointing to the RESCAL reset controller provider node.
     $ref: "/schemas/types.yaml#/definitions/phandle"
 
   reset-names:
@@ -98,12 +97,39 @@ required:
 
 allOf:
   - $ref: /schemas/pci/pci-bus.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: brcm,bcm4908-pcie
+    then:
+      properties:
+        resets:
+          items:
+            - description: reset controller handling the PERST# signal
+
+        reset-names:
+          items:
+            - const: perst
+
+      required:
+        - resets
+        - reset-names
   - if:
       properties:
         compatible:
           contains:
             const: brcm,bcm7216-pcie
     then:
+      properties:
+        resets:
+          items:
+            - description: phandle pointing to the RESCAL reset controller
+
+        reset-names:
+          items:
+            - const: rescal
+
       required:
         - resets
         - reset-names
-- 
2.26.2