[PATCH v4 1/9] dt-bindings: imx6q-pcie: Add ref clock for i.MX95 PCIe RC

[Richard Zhu <hongxing.zhu@nxp.com>]

Previous reference clock of i.MX95 PCIe RC is on when system boot to
kernel. But boot firmware change the behavor, it is off when boot. So it
needs be turn on when it is used. Also it needs be turn off/on when suspend
and resume.

Add one ref clock for i.MX95 PCIe RC. Increase clocks' maxItems to 5 and keep
the same restriction with other compatible string.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../bindings/pci/fsl,imx6q-pcie-common.yaml   |  4 +--
 .../bindings/pci/fsl,imx6q-pcie-ep.yaml       |  1 +
 .../bindings/pci/fsl,imx6q-pcie.yaml          | 25 ++++++++++++++++---
 3 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml
index a8b34f58f8f4..cddbe21f99f2 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml
@@ -17,11 +17,11 @@ description:
 properties:
   clocks:
     minItems: 3
-    maxItems: 4
+    maxItems: 5
 
   clock-names:
     minItems: 3
-    maxItems: 4
+    maxItems: 5
 
   num-lanes:
     const: 1
diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml
index 84ca12e8b25b..f41f704c6729 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml
@@ -103,6 +103,7 @@ allOf:
       properties:
         clocks:
           minItems: 4
+          maxItems: 4
         clock-names:
           items:
             - const: pcie
diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
index 1e05c560d797..4c76cd3f98a9 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
@@ -40,10 +40,11 @@ properties:
       - description: PCIe PHY clock.
       - description: Additional required clock entry for imx6sx-pcie,
            imx6sx-pcie-ep, imx8mq-pcie, imx8mq-pcie-ep.
+      - description: PCIe reference clock.
 
   clock-names:
     minItems: 3
-    maxItems: 4
+    maxItems: 5
 
   interrupts:
     items:
@@ -127,7 +128,7 @@ allOf:
     then:
       properties:
         clocks:
-          minItems: 4
+          maxItems: 4
         clock-names:
           items:
             - const: pcie
@@ -140,11 +141,10 @@ allOf:
         compatible:
           enum:
             - fsl,imx8mq-pcie
-            - fsl,imx95-pcie
     then:
       properties:
         clocks:
-          minItems: 4
+          maxItems: 4
         clock-names:
           items:
             - const: pcie
@@ -200,6 +200,23 @@ allOf:
             - const: mstr
             - const: slv
 
+  - if:
+      properties:
+        compatible:
+          enum:
+            - fsl,imx95-pcie
+    then:
+      properties:
+        clocks:
+          maxItems: 5
+        clock-names:
+          items:
+            - const: pcie
+            - const: pcie_bus
+            - const: pcie_phy
+            - const: pcie_aux
+            - const: ref
+
 unevaluatedProperties: false
 
 examples:
-- 
2.37.1