[PATCH 1/3] dt-bindings: spi: stm32: Add st,dual-flash property in st,stm32-qspi.yaml

[<patrice.chotard@xxxxxxxxxxx>]

From: Patrice Chotard <patrice.chotard@xxxxxxxxxxx>

Add new property st,dual-flash which allows to use the QSPI interface as a
communication channel using up to 8 qspi line.
This mode can only be used if cs-gpios property is defined.

Signed-off-by: Patrice Chotard <patrice.chotard@xxxxxxxxxxx>
---
 Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml b/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml
index 6ec6f556182f..5e4f9109799e 100644
--- a/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml
+++ b/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml
@@ -46,6 +46,14 @@ properties:
       - const: tx
       - const: rx
 
+  st,dual-flash:
+    type: boolean
+    description:
+      Allows to use 8 data lines in case cs-gpios property is defined.
+
+dependencies:
+  st,dual-flash: [ cs-gpios ]
+
 required:
   - compatible
   - reg
-- 
2.25.1