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.red...@avionic-design.de> Cc: Shawn Guo <shawn....@linaro.org> Cc: Sascha Hauer <s.ha...@pengutronix.de> Cc: Philipp Zabel <p.za...@pengutronix.de> Cc: "Benoît Thébaudeau" <benoit.thebaud...@advansee.com> Cc: Stephen Warren <swar...@wwwdotorg.org> --- Documentation/devicetree/bindings/pwm/imx-pwm.txt | 2 +- Documentation/devicetree/bindings/pwm/mxs-pwm.txt | 2 +- Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/pwm/imx-pwm.txt b/Documentation/devicetree/bindings/pwm/imx-pwm.txt index 9b9b185..8522bfb 100644 --- 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 b16f4a5..d7946be6 100644 --- 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 bbbeedb..01438ec 100644 --- 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: -- 1.7.12.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
