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[v8,1/4] spi: dt-bindings: cadence: Add Marvell overlay bindings documentation for Cadence XSPI

Message ID 20240607151831.3858304-2-wsadowski@marvell.com
State New
Headers show
Series Marvell HW overlay support for Cadence xSPI | expand

Commit Message

Witold Sadowski June 7, 2024, 3:18 p.m. UTC 
Add new bindings for the v2 Marvell xSPI overlay: marvell,cn10-xspi-nor
compatible string. This new compatible string distinguishes between the
original and modified xSPI block.

Also add an optional base for the xfer register set with an additional
reg field to allocate the xSPI Marvell overlay XFER block.

Signed-off-by: Witold Sadowski <wsadowski@marvell.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../devicetree/bindings/spi/cdns,xspi.yaml    | 32 ++++++++++++++++---
 1 file changed, 28 insertions(+), 4 deletions(-)
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Patch

diff --git a/Documentation/devicetree/bindings/spi/cdns,xspi.yaml b/Documentation/devicetree/bindings/spi/cdns,xspi.yaml
index eb0f92468185..38a5795589de 100644
--- a/Documentation/devicetree/bindings/spi/cdns,xspi.yaml
+++ b/Documentation/devicetree/bindings/spi/cdns,xspi.yaml
@@ -15,24 +15,27 @@  description: |
   single, dual, quad or octal wire transmission modes for
   read/write access to slaves such as SPI-NOR flash.
 
-allOf:
-  - $ref: spi-controller.yaml#
-
 properties:
   compatible:
-    const: cdns,xspi-nor
+    enum:
+      - cdns,xspi-nor
+      - marvell,cn10-xspi-nor
 
   reg:
     items:
       - description: address and length of the controller register set
       - description: address and length of the Slave DMA data port
       - description: address and length of the auxiliary registers
+      - description: address and length of the xfer registers
+    minItems: 3
 
   reg-names:
     items:
       - const: io
       - const: sdma
       - const: aux
+      - const: xfer
+    minItems: 3
 
   interrupts:
     maxItems: 1
@@ -42,6 +45,27 @@  required:
   - reg
   - interrupts
 
+allOf:
+  - $ref: spi-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - marvell,cn10-xspi-nor
+    then:
+      properties:
+        reg:
+          minItems: 4
+        reg-names:
+          minItems: 4
+    else:
+      properties:
+        reg:
+          maxItems: 3
+        reg-names:
+          maxItems: 3
+
 unevaluatedProperties: false
 
 examples: