diff options
author | Philip, Avinash <avinashphilip@ti.com> | 2012-11-27 08:48:09 (GMT) |
---|---|---|
committer | Thierry Reding <thierry.reding@avionic-design.de> | 2012-11-28 14:16:15 (GMT) |
commit | 333b08ee8c6e120d67118e4eb71c45f5c369c8a4 (patch) | |
tree | a2626907a8e7d59010c64f0fb632ec1a428fcf8b /Documentation | |
parent | af0ba001d208e117b5f4e4f504672b42a664a7f7 (diff) | |
download | linux-fsl-qoriq-333b08ee8c6e120d67118e4eb71c45f5c369c8a4.tar.xz |
pwm: tiecap: Add device-tree binding
This patch
1. Add support for device-tree binding for ECAP APWM driver.
2. Set size of pwm-cells set to 3 to support PWM channel number, PWM
period & polarity configuration from device tree.
3. Add enable/disable clock gating in PWM subsystem common config space.
4. When here set .owner member in platform_driver structure to
THIS_MODULE.
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>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/pwm/pwm-tiecap.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/pwm-tiecap.txt b/Documentation/devicetree/bindings/pwm/pwm-tiecap.txt new file mode 100644 index 0000000..131e8c1 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-tiecap.txt @@ -0,0 +1,23 @@ +TI SOC ECAP based APWM controller + +Required properties: +- compatible: Must be "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 { + compatible = "ti,am33xx-ecap"; + #pwm-cells = <3>; + reg = <0x48300100 0x80>; + ti,hwmods = "ecap0"; +}; |