[PATCH v6 3/5] dt-bindings: PCI: qcom: Document the IPQ5332 PCIe controller

[Varadarajan Narayanan]

Document the PCIe controller on IPQ5332 platform. IPQ5332 will
use IPQ9574 as the fall back compatible.

All DT entries except "reg" is similar between ipq5332 and
ipq9574. ipq9574 has 5 registers while ipq5332 has 6. MHI is the
additional (i.e. sixth entry). Since this matches with the
sdx55's "reg" definition which allows for 5 or 6 registers,
combine ipq9574 and ipq5332 with sdx55. Without this
dt_binding_check fails.

Signed-off-by: Varadarajan Narayanan <quic_varada at quicinc.com>
---
v6: Commit message update only. Add info regarding the moving of
    ipq9574 from 5 "reg" definition to 5 or 6 reg definition.

v5: Re-arrange 5332 and 9574 compatibles to handle fallback usage in dts

v4: * v3 reused ipq9574 bindings for ipq5332. Instead add one for ipq5332
    * DTS uses ipq9574 compatible as fallback. Hence move ipq9574 to be able
      to use the 'reg' section for both ipq5332 and ipq9574. Else, dtbs_check
      and dt_binding_check flag errors.
---
 Documentation/devicetree/bindings/pci/qcom,pcie.yaml | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
index bd87f6b49d68..9f37eca1ce0d 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
@@ -26,7 +26,6 @@ properties:
           - qcom,pcie-ipq8064-v2
           - qcom,pcie-ipq8074
           - qcom,pcie-ipq8074-gen3
-          - qcom,pcie-ipq9574
           - qcom,pcie-msm8996
           - qcom,pcie-qcs404
           - qcom,pcie-sdm845
@@ -34,6 +33,10 @@ properties:
       - items:
           - const: qcom,pcie-msm8998
           - const: qcom,pcie-msm8996
+      - items:
+          - enum:
+              - qcom,pcie-ipq5332
+          - const: qcom,pcie-ipq9574
 
   reg:
     minItems: 4
@@ -165,7 +168,6 @@ allOf:
             enum:
               - qcom,pcie-ipq6018
               - qcom,pcie-ipq8074-gen3
-              - qcom,pcie-ipq9574
     then:
       properties:
         reg:
@@ -206,6 +208,8 @@ allOf:
         compatible:
           contains:
             enum:
+              - qcom,pcie-ipq5332
+              - qcom,pcie-ipq9574
               - qcom,pcie-sdx55
     then:
       properties:
@@ -407,6 +411,7 @@ allOf:
         compatible:
           contains:
             enum:
+              - qcom,pcie-ipq5332
               - qcom,pcie-ipq9574
     then:
       properties:
@@ -555,6 +560,7 @@ allOf:
               enum:
                 - qcom,pcie-apq8064
                 - qcom,pcie-ipq4019
+                - qcom,pcie-ipq5332
                 - qcom,pcie-ipq8064
                 - qcom,pcie-ipq8064v2
                 - qcom,pcie-ipq8074
-- 
2.34.1