[PATCH 1/4] dt-bindings: i2c: dw: Document compatible thead,th1520-i2c

[Thomas Bonnefille]

Add documentation for compatible string thead,th1520-i2c which can be
used specifically for the TH1520 SoC.

Signed-off-by: Thomas Bonnefille <thomas.bonnefille at bootlin.com>
---
 .../devicetree/bindings/i2c/snps,designware-i2c.yaml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
index d9293c57f573..a7fa191fefd6 100644
--- a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
@@ -33,6 +33,10 @@ properties:
           - const: snps,designware-i2c
       - description: Baikal-T1 SoC System I2C controller
         const: baikal,bt1-sys-i2c
+      - description: T-HEAD TH1520 SoCs I2C controller
+        items:
+          - const: thead,th1520-i2c
+          - const: snps,designware-i2c
 
   reg:
     minItems: 1
@@ -142,4 +146,12 @@ examples:
       interrupts = <8>;
       clocks = <&ahb_clk>;
     };
+  - |
+    i2c at e7f20000 {
+      compatible = "thead,th1520-i2c", "snps,designware-i2c";
+      reg = <0xe7f20000 0x4000>;
+      interrupts = <44>;
+      clocks = <&i2c_ic_clk>;
+      status = "disabled";
+    };
 ...
-- 
2.44.0