--- zzzz-none-000/linux-4.4.60/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt	2017-04-08 07:53:53.000000000 +0000
+++ dragonfly-4020-701/linux-4.4.60/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt	2018-11-08 13:36:17.000000000 +0000
@@ -20,6 +20,9 @@
 Optional properties:
  - clock-frequency: Should specify the desired i2c bus clock frequency in Hz,
                     defaults to 100kHz if omitted.
+ - qup-clock-frequency: Should specify the desired i2c qup clock frequency in
+		Hz. If omitted, then the frequency configured by bootloader
+		will be used.
 
 Child nodes should conform to i2c bus binding.
 
@@ -34,6 +37,7 @@
  	clock-names = "core", "iface";
 
  	clock-frequency = <355000>;
+	qup-clock-frequency = <19050000>;
 
  	#address-cells = <1>;
  	#size-cells = <0>;