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Documentation: dt: add Broadcom BCM7038 PWM controller binding 

Add a binding documentation for the Broadcom BCM7038 PWM controller found in
BCM7xxx chips.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
hifive-unleashed-5.1
Florian Fainelli 2015-09-14 16:47:05 -07:00 committed by Thierry Reding
parent ed6c1476bf
commit 9495525e51
1 changed files with 20 additions and 0 deletions
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Documentation/devicetree/bindings/pwm/brcm,bcm7038-pwm.txt 100644
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Broadcom BCM7038 PWM controller (BCM7xxx Set Top Box PWM controller)
Required properties:
- compatible: must be "brcm,bcm7038-pwm"
- reg: physical base address and length for this controller
- #pwm-cells: should be 2. See pwm.txt in this directory for a description
of the cells format
- clocks: a phandle to the reference clock for this block which is fed through
its internal variable clock frequency generator
Example:
pwm: pwm@f0408000 {
compatible = "brcm,bcm7038-pwm";
reg = <0xf0408000 0x28>;
#pwm-cells = <2>;
clocks = <&upg_fixed>;
};