pwm: dt: Fix description of second PWM cell

The second cell in the PWM specifier denotes the period in nanoseconds,
not the duty cycle. The latter can be freely configured at runtime and
a PWM with a fixed duty cycle would be rather pointless.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>

diff --git a/Documentation/devicetree/bindings/pwm/imx-pwm.txt b/Documentation/devicetree/bindings/pwm/imx-pwm.txt
index 9b9b18514b61344609cc51dd1f1d1625d2e2ca96..8522bfbccfd79f3bdd40306d2cf9650ce08edc6b 100644 (file)
--- a/Documentation/devicetree/bindings/pwm/imx-pwm.txt
+++ b/Documentation/devicetree/bindings/pwm/imx-pwm.txt
@@ -4,7 +4,7 @@ Required properties:
 - compatible: should be "fsl,<soc>-pwm"
 - reg: physical base address and length of the controller's registers
 - #pwm-cells: should be 2.  The first cell specifies the per-chip index
-  of the PWM to use and the second cell is the duty cycle in nanoseconds.
+  of the PWM to use and the second cell is the period in nanoseconds.
 - interrupts: The interrupt for the pwm controller
 
 Example:

diff --git a/Documentation/devicetree/bindings/pwm/mxs-pwm.txt b/Documentation/devicetree/bindings/pwm/mxs-pwm.txt
index b16f4a57d1116756b750a9f5523e1b1c19352ba2..d7946be6cd275859c2121bc8f12c75f9c6715989 100644 (file)
--- a/Documentation/devicetree/bindings/pwm/mxs-pwm.txt
+++ b/Documentation/devicetree/bindings/pwm/mxs-pwm.txt
@@ -4,7 +4,7 @@ Required properties:
 - compatible: should be "fsl,imx23-pwm"
 - reg: physical base address and length of the controller's registers
 - #pwm-cells: should be 2.  The first cell specifies the per-chip index
-  of the PWM to use and the second cell is the duty cycle in nanoseconds.
+  of the PWM to use and the second cell is the period in nanoseconds.
 - fsl,pwm-number: the number of PWM devices
 
 Example:

diff --git a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
index bbbeedb4ec055c9c7f69b77ec1348a1525bc9dd5..01438ecd6628b80920dba8c783483dc94320373b 100644 (file)
--- a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
+++ b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
@@ -7,7 +7,7 @@ Required properties:
 - reg: physical base address and length of the controller's registers
 - #pwm-cells: On Tegra the number of cells used to specify a PWM is 2. The
   first cell specifies the per-chip index of the PWM to use and the second
-  cell is the duty cycle in nanoseconds.
+  cell is the period in nanoseconds.
 
 Example: