1 files changed, 27 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
index d9293c57f573..d904191bb0c6 100644
--- a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
@@ -27,12 +27,19 @@ properties:
     oneOf:
       - description: Generic Synopsys DesignWare I2C controller
         const: snps,designware-i2c
-      - description: Microsemi Ocelot SoCs I2C controller
+      - description: Renesas RZ/N1D I2C controller
         items:
-          - const: mscc,ocelot-i2c
+          - const: renesas,r9a06g032-i2c  # RZ/N1D
+          - const: renesas,rzn1-i2c       # RZ/N1
           - const: snps,designware-i2c
       - description: Baikal-T1 SoC System I2C controller
         const: baikal,bt1-sys-i2c
+      - items:
+          - enum:
+              - mscc,ocelot-i2c
+              - sophgo,sg2044-i2c
+              - thead,th1520-i2c
+          - const: snps,designware-i2c
 
   reg:
     minItems: 1
@@ -93,6 +100,22 @@ properties:
       - const: tx
       - const: rx
 
+  snps,bus-capacitance-pf:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      This property indicates the bus capacitance in picofarads (pF).
+      This value is used to compute the tHIGH and tLOW periods for high speed
+      mode.
+    enum: [100, 400]
+    default: 100
+
+  snps,clk-freq-optimized:
+    description:
+      This property indicates whether the hardware reduce its clock frequency
+      by reducing the internal latency required to generate the high period and
+      low period of SCL line.
+    type: boolean
+
 unevaluatedProperties: false
 
 required:
@@ -117,6 +140,8 @@ examples:
       i2c-sda-hold-time-ns = <300>;
       i2c-sda-falling-time-ns = <300>;
       i2c-scl-falling-time-ns = <300>;
+      snps,bus-capacitance-pf = <400>;
+      snps,clk-freq-optimized;
     };
   - |
     i2c@2000 {