[PATCH v2 3/3] dt-bindings: imx6q-pcie: Handle more resets on legacy platforms

[Marek Vasut]

The i.MX6 and i.MX7D does not use block controller to toggle PCIe
reset, hence the PCIe DT description contains three reset entries
on these older SoCs. Add this exception into the binding document.

Signed-off-by: Marek Vasut <marex at denx.de>
---
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt at linaro.org>
Cc: Lucas Stach <l.stach at pengutronix.de>
Cc: Richard Zhu <hongxing.zhu at nxp.com>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: Shawn Guo <shawnguo at kernel.org>
Cc: linux-arm-kernel at lists.infradead.org
Cc: NXP Linux Team <linux-imx at nxp.com>
To: devicetree at vger.kernel.org
---
V2: - Add mx8mq to 3-reset PCIe core variant
    - Handle the resets in allOf section
---
 .../bindings/pci/fsl,imx6q-pcie.yaml          | 35 +++++++++++++++----
 1 file changed, 28 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
index 2087dab95d679..f461ee2cd5c84 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
@@ -69,16 +69,9 @@ properties:
       required properties for imx7d-pcie and imx8mq-pcie.
 
   resets:
-    maxItems: 3
     description: Phandles to PCIe-related reset lines exposed by SRC
       IP block. Additional required by imx7d-pcie and imx8mq-pcie.
 
-  reset-names:
-    items:
-      - const: pciephy
-      - const: apps
-      - const: turnoff
-
   fsl,tx-deemph-gen1:
     description: Gen1 De-emphasis value (optional required).
     $ref: /schemas/types.yaml#/definitions/uint32
@@ -270,6 +263,34 @@ allOf:
             maxItems: 1
           power-domain-names: false
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx6q-pcie
+              - fsl,imx6sx-pcie
+              - fsl,imx6qp-pcie
+              - fsl,imx7d-pcie
+              - fsl,imx8mq-pcie
+    then:
+      properties:
+        resets:
+          maxItems: 3
+        reset-names:
+          items:
+            - const: pciephy
+            - const: apps
+            - const: turnoff
+    else:
+      properties:
+        resets:
+          maxItems: 2
+        reset-names:
+          items:
+            - const: apps
+            - const: turnoff
+
 examples:
   - |
     #include <dt-bindings/clock/imx6qdl-clock.h>
-- 
2.35.1