| Message ID | 20170216202749.20653-2-slemieux.tyco@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
ping On Thu, 2017-02-16 at 15:27 -0500, slemieux.tyco@gmail.com wrote: > From: Vladimir Zapolskiy <vz@mleia.com> > > NXP LPC32xx SoCs have two simple independent PWM controllers with a single > output each, in this case there is no need to specify PWM channel argument > on client side, one cell for setting PWM output frequency is sufficient. > > Another added to the description property 'clocks' has a standard meaning > of a controller supply clock, in the LPC32xx User's Manual the clock is > denoted as PWM1_CLK or PWM2_CLK clock. > > Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> > Reviewed-by: Sylvain Lemieux <slemieux.tyco@gmail.com> > Acked-by: Rob Herring <robh@kernel.org> > --- > Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt b/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt > index 74b5bc5dd19a..523d79662861 100644 > --- a/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt > +++ b/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt > @@ -3,15 +3,22 @@ LPC32XX PWM controller > Required properties: > - compatible: should be "nxp,lpc3220-pwm" > - reg: physical base address and length of the controller's registers > +- clocks: clock phandle and clock specifier pair > +- #pwm-cells: should be 1, the cell is used to specify the period in > + nanoseconds. > > Examples: > > pwm@4005c000 { > compatible = "nxp,lpc3220-pwm"; > reg = <0x4005c000 0x4>; > + clocks = <&clk LPC32XX_CLK_PWM1>; > + #pwm-cells = <1>; > }; > > pwm@4005c004 { > compatible = "nxp,lpc3220-pwm"; > reg = <0x4005c004 0x4>; > + clocks = <&clk LPC32XX_CLK_PWM2>; > + #pwm-cells = <1>; > };
diff --git a/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt b/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt index 74b5bc5dd19a..523d79662861 100644 --- a/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt +++ b/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt @@ -3,15 +3,22 @@ LPC32XX PWM controller Required properties: - compatible: should be "nxp,lpc3220-pwm" - reg: physical base address and length of the controller's registers +- clocks: clock phandle and clock specifier pair +- #pwm-cells: should be 1, the cell is used to specify the period in + nanoseconds. Examples: pwm@4005c000 { compatible = "nxp,lpc3220-pwm"; reg = <0x4005c000 0x4>; + clocks = <&clk LPC32XX_CLK_PWM1>; + #pwm-cells = <1>; }; pwm@4005c004 { compatible = "nxp,lpc3220-pwm"; reg = <0x4005c004 0x4>; + clocks = <&clk LPC32XX_CLK_PWM2>; + #pwm-cells = <1>; };