[PATCH net-next 3/5] dt-bindings: net: adi,adin1110: Add adi,spi-oa-tc6

[Iustin Stolniceanu <iustin.stolniceanu@analog.com>]

From: Ciprian Regus <ciprian.regus@analog.com>

The ADIN1110 and ADIN2111 support two SPI host interface protocols:
the generic SPI protocol and the OPEN Alliance TC6 protocol. The
protocol is selected by the state of the SPI_CFG1 pin, which the device
latches when it comes out of reset, together with SPI_CFG0, which
selects CRC (generic SPI) or protection (OPEN Alliance) mode.

The protocol is set by the board hardware, so the driver must know it
in advance. Add a boolean property to describe a device configured for
the OPEN Alliance TC6 protocol. Without it, the generic SPI protocol is
assumed, as before.

Signed-off-by: Ciprian Regus <ciprian.regus@analog.com>
Signed-off-by: Iustin Stolniceanu <iustin.stolniceanu@analog.com>
---
 Documentation/devicetree/bindings/net/adi,adin1110.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/adi,adin1110.yaml b/Documentation/devicetree/bindings/net/adi,adin1110.yaml
index 0a73e01d7f97..e19b6c94708d 100644
--- a/Documentation/devicetree/bindings/net/adi,adin1110.yaml
+++ b/Documentation/devicetree/bindings/net/adi,adin1110.yaml
@@ -43,6 +43,12 @@ properties:
       Enable CRC8 checks on SPI read/writes.
     type: boolean
 
+  adi,spi-oa-tc6:
+    description: |
+      The device is configured, through the SPI_CFG1 pin, for the
+      Open Alliance TC6 protocol instead of the generic SPI one.
+    type: boolean
+
   interrupts:
     maxItems: 1
 
-- 
2.43.0