mirror of
https://github.com/torvalds/linux.git
synced 2024-12-25 12:21:37 +00:00
5df1b8fb65
Update binding document of pwm-tiecap to reflect the usage of similar modules in da850 and am3xx SOCs. Signed-off-by: Philip Avinash <avinashphilip@ti.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
32 lines
1.0 KiB
Plaintext
32 lines
1.0 KiB
Plaintext
TI SOC ECAP based APWM controller
|
|
|
|
Required properties:
|
|
- 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.
|
|
- reg: physical base address and size of the registers map.
|
|
|
|
Optional properties:
|
|
- ti,hwmods: Name of the hwmod associated to the ECAP:
|
|
"ecap<x>", <x> being the 0-based instance number from the HW spec
|
|
|
|
Example:
|
|
|
|
ecap0: ecap@0 { /* ECAP on am33xx */
|
|
compatible = "ti,am33xx-ecap";
|
|
#pwm-cells = <3>;
|
|
reg = <0x48300100 0x80>;
|
|
ti,hwmods = "ecap0";
|
|
};
|
|
|
|
ecap0: ecap@0 { /* ECAP on da850 */
|
|
compatible = "ti,da850-ecap", "ti,am33xx-ecap";
|
|
#pwm-cells = <3>;
|
|
reg = <0x306000 0x80>;
|
|
};
|