We're renaming the 'st,pwm-num-chan' binding to 'st,pwm-num-devs' to
be more inline with the naming conventions of the subsystem. Where
we used to treat each line as a channel, the PWM convention is to
describe them as devices.
The second documentation adaption entails adding support for PWM
capture devices. A new clock is required as well as an IRQ line.
We're also adding a new property similar to the one described
above, but for capture channels. Typically, there will be less
capture channels than PWM-out, since all channels have the latter
capability, but only some have capture support.
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
---
Documentation/devicetree/bindings/pwm/pwm-st.txt | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/pwm/pwm-st.txt
b/Documentation/devicetree/bindings/pwm/pwm-st.txt
index 84d2fb8..19fce77 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-st.txt
+++ b/Documentation/devicetree/bindings/pwm/pwm-st.txt
@@ -13,13 +13,14 @@ Required parameters:
- pinctrl-0: List of phandles pointing to pin configuration nodes
for PWM module.
For Pinctrl properties, please refer to [1].
-- clock-names: Set to "pwm".
+- clock-names: Valid entries are "pwm" and/or "capture".
- clocks: phandle of the clock used by the PWM module.
For Clk properties, please refer to [2].
+- interrupts: IRQ for the Capture device
Optional properties:
-- st,pwm-num-chan: Number of available channels. If not passed, the driver
- will consider single channel by default.
+- st,pwm-num-chan: Number of available PWM channels. Default is 0.
+- st,capture-num-chan: Number of available Capture channels. Default is 0.
[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
@@ -38,4 +39,5 @@ pwm1: pwm@fe510000 {
clocks = <&clk_sysin>;
clock-names = "pwm";
st,pwm-num-chan = <4>;
+ st,capture-num-chan = <2>;
};
--
2.9.0
