On Fri, Aug 30, 2013 at 05:48:52PM +0800, Xiubo Li wrote: > This patch adds the document for Freescale FTM PWM driver under > Documentation/devicetree/bindings/pwm/. > > Signed-off-by: Xiubo Li <Li.Xiubo@xxxxxxxxxxxxx> > --- > .../devicetree/bindings/pwm/pwm-fsl-ftm.txt | 40 ++++++++++++++++++++++ > 1 file changed, 40 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt > > diff --git a/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt b/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt > new file mode 100644 > index 0000000..b2b5214 > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt > @@ -0,0 +1,40 @@ > +Freescale FTM PWM controller > + > +Required properties: > +- compatible: Should be "fsl,vf610-ftm-pwm" > +- reg: Physical base address and length of the controller's registers > +- #pwm-cells: Should be 3. See pwm.txt in this directory for a description of > + the cells format. > +- clock-names : Includes the following module clock source entries: > + "ftm0" (system clock), > + "ftm0_fix_sel" (fixed frequency clock), > + "ftm0_ext_sel" (external clock) > +- clocks : Must contain an entry list for entries in clock-names. > +- fsl,pwm-counter-clk: The FTM PWM counter clock source, should be one of the > + entries in clock-names. > +- fsl,pwm-avaliable-chs: The FTM channels ID list of current board which are > + available as PWM function. > +- For each channel's pinctrl, the "chN-active" and "chN-idle" states should be > + implemented at same time. > + > +Example: > + > +pwm0: pwm@40038000 { > + compatible = "fsl,vf610-ftm-pwm"; > + reg = <0x40038000 0x1000>; > + #pwm-cells = <3>; > + clock-names = "ftm0", "ftm0_fix_sel", "ftm0_ext_sel"; > + clocks = <&clks VF610_CLK_FTM0>, > + <&clks VF610_CLK_FTM0_FIX_SEL>, > + <&clks VF610_CLK_FTM0_EXT_SEL>; > + pinctrl-names = "ch0-active", "ch0-idle", "ch1-active", "ch1-idle", > + ....; > + pinctrl-0 = <&pinctrl_pwm0_ch0_active>; > + pinctrl-1 = <&pinctrl_pwm0_ch0_idle>; > + pinctrl-2 = <&pinctrl_pwm0_ch1_active>; > + pinctrl-3 = <&pinctrl_pwm0_ch1_idle>; > + ... > + fsl,pwm-counter-clk = "ftm0_ext_sel"; > + fsl,pwm-avaliable-chs = <0 3 5 6>; I don't think this proerty is useful. Just enable all channels. I think this was mentioned before. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html