[PATCH V6 1/3] dt-bindings: i2c: xiic: Add 'xlnx,axi-iic-2.1' to compatible

[Manikanta Guntupalli <manikanta.guntupalli@amd.com>]

From: Raviteja Narayanam <raviteja.narayanam@xilinx.com>

Add xilinx I2C new version 'xlnx,axi-iic-2.1' string to compatible.
Add clock-frequency as optional property.

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xilinx.com>
Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
---
Changes for v6:
Add enum for clock-frequency in xlnx,xps-iic-2.00.a.yaml
Changes for v5:
Update description and add default value details for clock-frequency
in xlnx,xps-iic-2.00.a.yaml
Changes for v4:
Add description for clock-frequency in xlnx,xps-iic-2.00.a.yaml
Changes since v3: none
---
 .../devicetree/bindings/i2c/xlnx,xps-iic-2.00.a.yaml  | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/i2c/xlnx,xps-iic-2.00.a.yaml b/Documentation/devicetree/bindings/i2c/xlnx,xps-iic-2.00.a.yaml
index 8d241a703d85..1b598638d457 100644
--- a/Documentation/devicetree/bindings/i2c/xlnx,xps-iic-2.00.a.yaml
+++ b/Documentation/devicetree/bindings/i2c/xlnx,xps-iic-2.00.a.yaml
@@ -14,7 +14,9 @@ allOf:
 
 properties:
   compatible:
-    const: xlnx,xps-iic-2.00.a
+    enum:
+      - xlnx,axi-iic-2.1
+      - xlnx,xps-iic-2.00.a
 
   reg:
     maxItems: 1
@@ -30,6 +32,13 @@ properties:
     description: |
       Input clock name.
 
+  clock-frequency:
+    description:
+      Optional I2C SCL clock frequency. If not specified, do not configure
+      in software, rely only on hardware design value.
+    default: 100000
+    enum: [ 100000, 400000, 1000000 ]
+
 required:
   - compatible
   - reg
-- 
2.25.1