[PATCH v7 01/20] dt-bindings: imx6q-pcie: Fix clock names for imx6sx and imx8mq

[Serge Semin <Sergey.Semin@baikalelectronics.ru>]

Originally as it was defined the legacy bindings the pcie_inbound_axi and
pcie_aux clock names were supposed to be used in the fsl,imx6sx-pcie and
fsl,imx8mq-pcie devices respectively. But the bindings conversion has been
incorrectly so now the fourth clock name is defined as "pcie_inbound_axi
for imx6sx-pcie, pcie_aux for imx8mq-pcie", which is completely wrong.
Let's fix that by conditionally apply the clock-names constraints based on
the compatible string content.

Fixes: 751ca492f131 ("dt-bindings: PCI: imx6: convert the imx pcie controller to dtschema")
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Acked-by: Alexander Stein <alexander.stein@ew.tq-group.com>

---

Changelog v5:
- This is a new patch added on the v5 release of the patchset.

Changelog v7:
- Move the allOf clause to the bottom of the bindings. (@Krzysztof)
- Get back the names to the clock-names property and make sure the
  platform-specific name constraint is applied in the allOf clause.
  (@Rob)
---
 .../bindings/pci/fsl,imx6q-pcie.yaml          | 46 +++++++++++++++++--
 1 file changed, 42 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
index 376e739bcad4..49b4f7a32e71 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
@@ -14,9 +14,6 @@ description: |+
   This PCIe host controller is based on the Synopsys DesignWare PCIe IP
   and thus inherits all the common properties defined in snps,dw-pcie.yaml.
 
-allOf:
-  - $ref: /schemas/pci/snps,dw-pcie.yaml#
-
 properties:
   compatible:
     enum:
@@ -61,7 +58,7 @@ properties:
       - const: pcie
       - const: pcie_bus
       - const: pcie_phy
-      - const: pcie_inbound_axi for imx6sx-pcie, pcie_aux for imx8mq-pcie
+      - enum: [ pcie_inbound_axi, pcie_aux ]
 
   num-lanes:
     const: 1
@@ -175,6 +172,47 @@ required:
   - clocks
   - clock-names
 
+allOf:
+  - $ref: /schemas/pci/snps,dw-pcie.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: fsl,imx6sx-pcie
+    then:
+      properties:
+        clock-names:
+          items:
+            - {}
+            - {}
+            - {}
+            - const: pcie_inbound_axi
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: fsl,imx8mq-pcie
+    then:
+      properties:
+        clock-names:
+          items:
+            - {}
+            - {}
+            - {}
+            - const: pcie_aux
+  - if:
+      properties:
+        compatible:
+          not:
+            contains:
+              enum:
+                - fsl,imx6sx-pcie
+                - fsl,imx8mq-pcie
+    then:
+      properties:
+        clock-names:
+          maxItems: 3
+
 unevaluatedProperties: false
 
 examples:
-- 
2.38.1