[PATCH v3 2/7] dt-bindings: serial: 8250: aspeed: add aspeed,vuart-over-pci bool prop

The ASPEED AST2600 has 2 VUART accessible over PCI.
This boolean can be set to specify if the VUART is used over PCI.

Signed-off-by: Grégoire Layet <[email protected]>
---
 .../devicetree/bindings/serial/8250.yaml          | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/8250.yaml b/Documentation/devicetree/bindings/serial/8250.yaml
index 3cbd0f532e15..b03797f4674d 100644
--- a/Documentation/devicetree/bindings/serial/8250.yaml
+++ b/Documentation/devicetree/bindings/serial/8250.yaml
@@ -26,6 +26,14 @@ allOf:
           anyOf:
             - const: aspeed,ast2500-vuart
             - const: aspeed,ast2600-vuart
+  - if:
+      anyOf:
+        - required:
+            - aspeed,vuart-over-pci
+    then:
+      properties:
+        compatible:
+          const: aspeed,ast2600-vuart
   - if:
       properties:
         compatible:
@@ -312,6 +320,13 @@ properties:
       polarity (IRQ_TYPE_LEVEL_LOW or IRQ_TYPE_LEVEL_HIGH). Only
       applicable to aspeed,ast2500-vuart and aspeed,ast2600-vuart.
 
+  aspeed,vuart-over-pci:
+    type: boolean
+    default: false
+    description: |
+      Enable the VUART over the BMC PCI device. Only applicable to
+      aspeed,ast2600-vuart.
+
 required:
   - reg
   - interrupts
-- 
2.54.0