aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/pwm/pwm-bcm2835.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/pwm/pwm-bcm2835.txt')
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-bcm2835.txt30
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/pwm-bcm2835.txt b/Documentation/devicetree/bindings/pwm/pwm-bcm2835.txt
new file mode 100644
index 000000000000..fb6fb31bc4c4
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-bcm2835.txt
@@ -0,0 +1,30 @@
1BCM2835 PWM controller (Raspberry Pi controller)
2
3Required properties:
4- compatible: should be "brcm,bcm2835-pwm"
5- reg: physical base address and length of the controller's registers
6- clock: This clock defines the base clock frequency of the PWM hardware
7 system, the period and the duty_cycle of the PWM signal is a multiple of
8 the base period.
9- #pwm-cells: Should be 2. See pwm.txt in this directory for a description of
10 the cells format.
11
12Examples:
13
14pwm@2020c000 {
15 compatible = "brcm,bcm2835-pwm";
16 reg = <0x2020c000 0x28>;
17 clocks = <&clk_pwm>;
18 #pwm-cells = <2>;
19};
20
21clocks {
22 ....
23 clk_pwm: pwm {
24 compatible = "fixed-clock";
25 reg = <3>;
26 #clock-cells = <0>;
27 clock-frequency = <9200000>;
28 };
29 ....
30};