[PATCH v3 1/3] dt-bindings: net: dsa: nxp,sja1105: Add reset-gpios property

[Jonas Rebmann]

Both the nxp,sja1105 and the nxp,sja1110 series feature an active-low
reset pin, rendering reset-gpios a valid property for all of the
nxp,sja1105 family.

Acked-by: Vladimir Oltean <vladimir.oltean at nxp.com>
Reviewed-by: Rob Herring (Arm) <robh at kernel.org>
Reviewed-by: Frank Li <Frank.Li at nxp.com>
Signed-off-by: Jonas Rebmann <jre at pengutronix.de>
---
 Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
index 9432565f4f5d..e9dd914b0734 100644
--- a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
@@ -32,6 +32,15 @@ properties:
   reg:
     maxItems: 1
 
+  reset-gpios:
+    description:
+      A GPIO connected to the active-low RST_N pin of the SJA1105. Note that
+      reset of this chip is performed via SPI and the RST_N pin must be wired
+      to satisfy the power-up sequence documented in "SJA1105PQRS Application
+      Hints" (AH1704) sec. 2.4.4. Connecting the SJA1105 RST_N pin to a GPIO is
+      therefore discouraged.
+    maxItems: 1
+
   spi-cpha: true
   spi-cpol: true
 

-- 
2.51.0.297.gca2559c1d6