On Wed, May 31, 2017 at 02:14:38PM +0800, fenglinw@xxxxxxxxxxxxxx wrote: > From: Fenglin Wu <fenglinw@xxxxxxxxxxxxxx> > > Add pwm_chip to support QTI LPG module and export LPG channels as > PWM devices for consumer drivers' usage. > > Signed-off-by: Fenglin Wu <fenglinw@xxxxxxxxxxxxxx> > --- > .../devicetree/bindings/pwm/pwm-qti-lpg.txt | 39 ++ Please put binding in a separate patch. > drivers/pwm/Kconfig | 10 + > drivers/pwm/Makefile | 1 + > drivers/pwm/pwm-qti-lpg.c | 578 +++++++++++++++++++++ > 4 files changed, 628 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pwm/pwm-qti-lpg.txt > create mode 100644 drivers/pwm/pwm-qti-lpg.c > > diff --git a/Documentation/devicetree/bindings/pwm/pwm-qti-lpg.txt b/Documentation/devicetree/bindings/pwm/pwm-qti-lpg.txt > new file mode 100644 > index 0000000..df81f5f > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/pwm-qti-lpg.txt > @@ -0,0 +1,39 @@ > +Qualcomm Technologies, Inc. LPG driver specific bindings > + > +This binding document describes the properties of LPG (Light Pulse Generator) > +device module in Qualcomm Technologies, Inc. PMIC chips. > + > +- compatible: > + Usage: required > + Value type: <string> > + Definition: Must be "qcom,pwm-lpg". Needs SoC specific compatible strings. > + > +- reg: > + Usage: required > + Value type: <prop-encoded-array> > + Definition: Register base and length for LPG modules. The length > + varies based on the number of channels available in > + the PMIC chips. > + > +- reg-names: > + Usage: required > + Value type: <string> > + Definition: The name of the register defined in the reg property. > + It must be "lpg-base". -names is pointless when there is only 1. > + > +- #pwm-cells: > + Usage: required > + Value type: <u32> > + Definition: The number of cells in "pwms" property specified in > + PWM user nodes. It should be 2. The first cell is > + the PWM channel ID indexed from 0, and the second > + cell is the PWM default period in nanoseconds. > + > +Example: > + > + pmi8998_lpg: lpg@b100 { > + compatible = "qcom,pwm-lpg"; > + reg = <0xb100 0x600>; > + reg-names = "lpg-base"; > + #pwm-cells = <2>; > + }; -- 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