aboutsummaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt')
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt23
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt b/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt
new file mode 100644
index 00000000..4fc7079d
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt
@@ -0,0 +1,23 @@
+TI SOC EHRPWM based PWM controller
+
+Required properties:
+- compatible : Must be "ti,am33xx-ehrpwm"
+- #pwm-cells: Should be 3. Number of cells being used to specify PWM property.
+ First cell specifies the per-chip index of the PWM to use, the second
+ cell is the period in nanoseconds and bit 0 in the third cell is used to
+ encode the polarity of PWM output. Set bit 0 of the third in PWM specifier
+ to 1 for inverse polarity & set to 0 for normal polarity.
+- reg: physical base address and size of the registers map.
+
+Optional properties:
+- ti,hwmods: Name of the hwmod associated to the EHRPWM:
+ "ehrpwm<x>", <x> being the 0-based instance number from the HW spec
+
+Example:
+
+ehrpwm0: ehrpwm@0 {
+ compatible = "ti,am33xx-ehrpwm";
+ #pwm-cells = <3>;
+ reg = <0x48300200 0x100>;
+ ti,hwmods = "ehrpwm0";
+};