1*c66ec88fSEmmanuel VadotSTMicroelectronics PWM driver bindings 2*c66ec88fSEmmanuel Vadot-------------------------------------- 3*c66ec88fSEmmanuel Vadot 4*c66ec88fSEmmanuel VadotRequired parameters: 5*c66ec88fSEmmanuel Vadot- compatible : "st,pwm" 6*c66ec88fSEmmanuel Vadot- #pwm-cells : Number of cells used to specify a PWM. First cell 7*c66ec88fSEmmanuel Vadot specifies the per-chip index of the PWM to use and the 8*c66ec88fSEmmanuel Vadot second cell is the period in nanoseconds - fixed to 2 9*c66ec88fSEmmanuel Vadot for STiH41x. 10*c66ec88fSEmmanuel Vadot- reg : Physical base address and length of the controller's 11*c66ec88fSEmmanuel Vadot registers. 12*c66ec88fSEmmanuel Vadot- pinctrl-names: Set to "default". 13*c66ec88fSEmmanuel Vadot- pinctrl-0: List of phandles pointing to pin configuration nodes 14*c66ec88fSEmmanuel Vadot for PWM module. 15*c66ec88fSEmmanuel Vadot For Pinctrl properties, please refer to [1]. 16*c66ec88fSEmmanuel Vadot- clock-names: Valid entries are "pwm" and/or "capture". 17*c66ec88fSEmmanuel Vadot- clocks: phandle of the clock used by the PWM module. 18*c66ec88fSEmmanuel Vadot For Clk properties, please refer to [2]. 19*c66ec88fSEmmanuel Vadot- interrupts: IRQ for the Capture device 20*c66ec88fSEmmanuel Vadot 21*c66ec88fSEmmanuel VadotOptional properties: 22*c66ec88fSEmmanuel Vadot- st,pwm-num-chan: Number of available PWM channels. Default is 0. 23*c66ec88fSEmmanuel Vadot- st,capture-num-chan: Number of available Capture channels. Default is 0. 24*c66ec88fSEmmanuel Vadot 25*c66ec88fSEmmanuel Vadot[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt 26*c66ec88fSEmmanuel Vadot[2] Documentation/devicetree/bindings/clock/clock-bindings.txt 27*c66ec88fSEmmanuel Vadot 28*c66ec88fSEmmanuel VadotExample: 29*c66ec88fSEmmanuel Vadot 30*c66ec88fSEmmanuel Vadotpwm1: pwm@fe510000 { 31*c66ec88fSEmmanuel Vadot compatible = "st,pwm"; 32*c66ec88fSEmmanuel Vadot reg = <0xfe510000 0x68>; 33*c66ec88fSEmmanuel Vadot #pwm-cells = <2>; 34*c66ec88fSEmmanuel Vadot pinctrl-names = "default"; 35*c66ec88fSEmmanuel Vadot pinctrl-0 = <&pinctrl_pwm1_chan0_default 36*c66ec88fSEmmanuel Vadot &pinctrl_pwm1_chan1_default 37*c66ec88fSEmmanuel Vadot &pinctrl_pwm1_chan2_default 38*c66ec88fSEmmanuel Vadot &pinctrl_pwm1_chan3_default>; 39*c66ec88fSEmmanuel Vadot clocks = <&clk_sysin>; 40*c66ec88fSEmmanuel Vadot clock-names = "pwm"; 41*c66ec88fSEmmanuel Vadot st,pwm-num-chan = <4>; 42*c66ec88fSEmmanuel Vadot st,capture-num-chan = <2>; 43*c66ec88fSEmmanuel Vadot}; 44