Required properties:
- compatible: should be "atmel,tcb-pwm"
-- #pwm-cells: Should be 3. The 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 cell in PWM specifier to 1 for inverse polarity &
- set to 0 for normal polarity.
+- #pwm-cells: should be 3. See pwm.txt in this directory for a description of
+ the cells format. The only third cell flag supported by this binding is
+ PWM_POLARITY_INVERTED.
- tc-block: The Timer Counter block to use as a PWM chip.
Example:
Required properties:
- compatible: should be "fsl,<soc>-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.
- interrupts: The interrupt for the pwm controller
Example:
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:
- "nvidia,tegra20-pwm"
- "nvidia,tegra30-pwm"
- reg: physical base address and length of the controller's registers
-- #pwm-cells: On Tegra the number of cells used to specify a PWM is 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.
Example:
Required properties:
- compatible: "nxp,pca9685-pwm"
- - #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.
The index 16 is the ALLCALL channel, that sets all PWM channels at the same
time.
- reg: base address and size of register area
- interrupts: list of timer interrupts (one interrupt per timer, starting at
timer 0)
-- #pwm-cells: number of cells used for PWM specifier - must be 3
- the specifier format is as follows:
- - phandle to PWM controller node
- - index of PWM channel (from 0 to 4)
- - PWM signal period in nanoseconds
- - bitmask of optional PWM flags:
- 0x1 - invert PWM signal
+- #pwm-cells: should be 3. See pwm.txt in this directory for a description of
+ the cells format. The only third cell flag supported by this binding is
+ PWM_POLARITY_INVERTED.
Optional properties:
- samsung,pwm-outputs: list of PWM channels used as PWM outputs on particular
- compatible: Must be "ti,<soc>-ecap".
for am33xx - compatible = "ti,am33xx-ecap";
for da850 - compatible = "ti,da850-ecap", "ti,am33xx-ecap";
-- #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.
+- #pwm-cells: should be 3. See pwm.txt in this directory for a description of
+ the cells format. The PWM channel index ranges from 0 to 4. The only third
+ cell flag supported by this binding is PWM_POLARITY_INVERTED.
- reg: physical base address and size of the registers map.
Optional properties:
- compatible: Must be "ti,<soc>-ehrpwm".
for am33xx - compatible = "ti,am33xx-ehrpwm";
for da850 - compatible = "ti,da850-ehrpwm", "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.
+- #pwm-cells: should be 3. See pwm.txt in this directory for a description of
+ the cells format. The only third cell flag supported by this binding is
+ PWM_POLARITY_INVERTED.
- reg: physical base address and size of the registers map.
Optional properties:
- "st,spear320-pwm"
- "st,spear1340-pwm"
- reg: physical base address and length of the controller's registers
-- #pwm-cells: number of cells used to specify PWM which is fixed to 2 on
- SPEAr. 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.
Example:
Required properties:
- compatible: "ti,twl4030-pwm" or "ti,twl6030-pwm"
-- #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.
Example:
Required properties:
- compatible: "ti,twl4030-pwmled" or "ti,twl6030-pwmled"
-- #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.
Example:
Required properties:
- compatible: should be "via,vt8500-pwm"
- reg: physical base address and length of the controller's registers
-- #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.
+- #pwm-cells: should be 3. See pwm.txt in this directory for a description of
+ the cells format. The only third cell flag supported by this binding is
+ PWM_POLARITY_INVERTED.
- clocks: phandle to the PWM source clock
Example:
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff