[PATCH 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: 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
---
 .../bindings/pci/fsl,imx6q-pcie.yaml          | 22 +++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
index fc8d4d7b80b38..12c7baba489aa 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
@@ -69,13 +69,12 @@ properties:
       required properties for imx7d-pcie and imx8mq-pcie.
 
   resets:
-    maxItems: 3
+    maxItems: 2
     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
 
@@ -262,6 +261,25 @@ allOf:
                The phandle pointing to the DISPLAY domain for imx6sx-pcie, to
                PCIE_PHY power domain for imx7d-pcie and imx8mq-pcie.
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx6q-pcie
+              - fsl,imx6sx-pcie
+              - fsl,imx6qp-pcie
+              - fsl,imx7d-pcie
+    then:
+      properties:
+        resets:
+          maxItems: 3
+        reset-names:
+          items:
+            - const: pciephy
+            - const: apps
+            - const: turnoff
+
 examples:
   - |
     #include <dt-bindings/clock/imx6qdl-clock.h>
-- 
2.35.1