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| author | Shiraz Hashim <shiraz.hashim@st.com> | 2012-10-25 09:39:13 +0530 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@avionic-design.de> | 2012-11-22 22:47:03 +0100 |
| commit | ce20364bf75b0e91156698eea49f1e8586b212c1 (patch) | |
| tree | e6a2506dbb883d704ec1f1f3d3fc1ff62479c75b /Documentation | |
| parent | 63e1ed2364050073770c085021377d7764969b85 (diff) | |
| download | linux-stable-ce20364bf75b0e91156698eea49f1e8586b212c1.tar.gz linux-stable-ce20364bf75b0e91156698eea49f1e8586b212c1.tar.bz2 linux-stable-ce20364bf75b0e91156698eea49f1e8586b212c1.zip | |
pwm: Add SPEAr PWM chip driver support
Add support for PWM chips present on SPEAr platforms. These PWM
chips support 4 channel output with programmable duty cycle and
frequency.
More details on these PWM chips can be obtained from relevant
chapter of reference manual, present at following[1] location.
1. http://www.st.com/internet/mcu/product/251211.jsp
Cc: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Vipin Kumar <vipin.kumar@st.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/pwm/spear-pwm.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/spear-pwm.txt b/Documentation/devicetree/bindings/pwm/spear-pwm.txt new file mode 100644 index 000000000000..3ac779d83386 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/spear-pwm.txt @@ -0,0 +1,18 @@ +== ST SPEAr SoC PWM controller == + +Required properties: +- compatible: should be one of: + - "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. + +Example: + + pwm: pwm@a8000000 { + compatible ="st,spear320-pwm"; + reg = <0xa8000000 0x1000>; + #pwm-cells = <2>; + }; |