--- zzzz-none-000/linux-3.10.107/Documentation/devicetree/bindings/pwm/mxs-pwm.txt	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/Documentation/devicetree/bindings/pwm/mxs-pwm.txt	2021-02-04 17:41:59.000000000 +0000
@@ -3,8 +3,8 @@
 Required properties:
 - compatible: should be "fsl,imx23-pwm"
 - reg: physical base address and length of the controller's registers
-- #pwm-cells: should be 2.  The first cell specifies the per-chip index
-  of the PWM to use and the second cell is the period in nanoseconds.
+- #pwm-cells: should be 2. See pwm.txt in this directory for a description of
+  the cells format.
 - fsl,pwm-number: the number of PWM devices
 
 Example: