[lkml]   [2016]   [Aug]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH v4 17/17] dt-bindings: pwm: sti: Update DT bindings with recent changes
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 <>
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>;
 \ /
  Last update: 2016-09-17 09:57    [W:0.426 / U:0.708 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site