1 *Imagination Technologies PWM DAC driver 1 *Imagination Technologies PWM DAC driver
2 2
3 Required properties: 3 Required properties:
4 - compatible: Should be "img,pistachio-pwm" 4 - compatible: Should be "img,pistachio-pwm"
5 - reg: Should contain physical base address 5 - reg: Should contain physical base address and length of pwm registers.
6 - clocks: Must contain an entry for each ent 6 - clocks: Must contain an entry for each entry in clock-names.
7 See ../clock/clock-bindings.txt for de 7 See ../clock/clock-bindings.txt for details.
8 - clock-names: Must include the following en 8 - clock-names: Must include the following entries.
9 - pwm: PWM operating clock. 9 - pwm: PWM operating clock.
10 - sys: PWM system interface clock. 10 - sys: PWM system interface clock.
11 - #pwm-cells: Should be 2. See pwm.yaml in t 11 - #pwm-cells: Should be 2. See pwm.yaml in this directory for the
12 description of the cells format. 12 description of the cells format.
13 - img,cr-periph: Must contain a phandle to t 13 - img,cr-periph: Must contain a phandle to the peripheral control
14 syscon node which contains PWM control 14 syscon node which contains PWM control registers.
15 15
16 Example: 16 Example:
17 pwm: pwm@18101300 { 17 pwm: pwm@18101300 {
18 compatible = "img,pistachio-pw 18 compatible = "img,pistachio-pwm";
19 reg = <0x18101300 0x100>; 19 reg = <0x18101300 0x100>;
20 clocks = <&pwm_clk>, <&system_ 20 clocks = <&pwm_clk>, <&system_clk>;
21 clock-names = "pwm", "sys"; 21 clock-names = "pwm", "sys";
22 #pwm-cells = <2>; 22 #pwm-cells = <2>;
23 img,cr-periph = <&cr_periph>; 23 img,cr-periph = <&cr_periph>;
24 }; 24 };
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