[PATCH v2] dt-bindings: spi: zynqmp-qspi: Include two 'reg' properties only for the Zynq UltraScale QSPI

[Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com>]

Linear mode is only supported by the Zynq UltraScale QSPI controller,
so update the bindings to include two 'reg' properties only for the
Zynq UltraScale QSPI controller.

Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com>
---
BRANCH: for-next

Changes in v2:
 - In the if block changed 'maxItems' to 'minItems'.
 - Retained 'reg' property definition and added 'minItems'.
 - Moved the allOf block down to the end of the binding.
---
 .../bindings/spi/spi-zynqmp-qspi.yaml         | 22 ++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/spi/spi-zynqmp-qspi.yaml b/Documentation/devicetree/bindings/spi/spi-zynqmp-qspi.yaml
index e5199b109dad..04d4d3b4916d 100644
--- a/Documentation/devicetree/bindings/spi/spi-zynqmp-qspi.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-zynqmp-qspi.yaml
@@ -9,9 +9,6 @@ title: Xilinx Zynq UltraScale+ MPSoC GQSPI controller
 maintainers:
   - Michal Simek <michal.simek@amd.com>
 
-allOf:
-  - $ref: spi-controller.yaml#
-
 properties:
   compatible:
     enum:
@@ -19,6 +16,7 @@ properties:
       - xlnx,zynqmp-qspi-1.0
 
   reg:
+    minItems: 1
     maxItems: 2
 
   interrupts:
@@ -47,6 +45,24 @@ required:
 
 unevaluatedProperties: false
 
+allOf:
+  - $ref: spi-controller.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: xlnx,zynqmp-qspi-1.0
+    then:
+      properties:
+        reg:
+          minItems: 2
+
+    else:
+      properties:
+        reg:
+          maxItems: 1
+
 examples:
   - |
     #include <dt-bindings/clock/xlnx-zynqmp-clk.h>
-- 
2.34.1