From: Abhisit Sangjan <s.abhisit@xxxxxxxxx> --- .../devicetree/bindings/gpio/gpio-lmp92001.txt | 29 ++++++++++++++++++ .../bindings/iio/adc/ti-lmp92001-adc.txt | 21 +++++++++++++ .../bindings/iio/dac/ti-lmp92001-dac.txt | 35 ++++++++++++++++++++++ 3 files changed, 85 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-lmp92001.txt create mode 100644 Documentation/devicetree/bindings/iio/adc/ti-lmp92001-adc.txt create mode 100644 Documentation/devicetree/bindings/iio/dac/ti-lmp92001-dac.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-lmp92001.txt b/Documentation/devicetree/bindings/gpio/gpio-lmp92001.txt new file mode 100644 index 0000000..62267ff --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-lmp92001.txt @@ -0,0 +1,29 @@ +* Texas Instruments' LMP92001 GPIOs + +Required properties: + - compatible: Must be set to "ti,lmp92001-gpio". + - reg: i2c chip address for the device. + - gpio-controller: Marks the device node as a gpio controller. + - #gpio-cells : Should be two. The first cell is the pin number and the + second cell is used to specify the gpio polarity: + 0 = Active high + 1 = Active low +- ti,lmp92001-gpio-dir: bit mask for direction and drive logic default. Since + the direction and the internal pull-down are shared register and similar to + open-collector drive: + 0 = [O]utput and also meaning drive it to low + 1 = [I]nput and also meaning open, to drive it to high is required to + have an external resistor + +Example: +lmp92001@20 { + compatible = "ti,lmp92001"; + reg = <0x20>; + + lmp92001_gpio: lmp92001-gpio { + compatible = "ti,lmp92001-gpio"; + gpio-controller; + #gpio-cells = <2>; + ti,lmp92001-gpio-dir = /bits/ 8 <0xff>; + }; +}; \ No newline at end of file diff --git a/Documentation/devicetree/bindings/iio/adc/ti-lmp92001-adc.txt b/Documentation/devicetree/bindings/iio/adc/ti-lmp92001-adc.txt new file mode 100644 index 0000000..34d7809 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/ti-lmp92001-adc.txt @@ -0,0 +1,21 @@ +* Texas Instruments' LMP92001 ADCs + +Required properties: + - compatible: Must be set to "ti,lmp92001-adc". + - reg: i2c chip address for the device. + - ti,lmp92001-adc-mode: adc operation, either continuous or single-shot. + - ti,lmp92001-adc-mask: bit mask for which channel is enable. + 0 = Off + 1 = On + +Example: +lmp92001@20 { + compatible = "ti,lmp92001"; + reg = <0x20>; + + lmp92001-adc { + compatible = "ti,lmp92001-adc"; + ti,lmp92001-adc-mode = "continuous"; + ti,lmp92001-adc-mask = <0x00000079>; + }; +}; \ No newline at end of file diff --git a/Documentation/devicetree/bindings/iio/dac/ti-lmp92001-dac.txt b/Documentation/devicetree/bindings/iio/dac/ti-lmp92001-dac.txt new file mode 100644 index 0000000..f058cc0 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/ti-lmp92001-dac.txt @@ -0,0 +1,35 @@ +* Texas Instruments' LMP92001 DACs + +Required properties: + - compatible: Must be set to "ti,lmp92001-dac". + - reg: i2c chip address for the device. + - ti,lmp92001-dac-hiz: hi-impedance control, + 1 = Forces all OUT[1:12] outputs to hi-z, 0 = normal + - ti,lmp92001-dac-outx: + Cy = 0, 1 = will force associated OUTx outputs to VDD + Cy = 0, 0 = will force associated OUTx outputs to GND + - ti,lmp92001-dac-gang: What group of Cy is governed to. + ----------------------------------------- + | Cy | CDAC:GANG = 0 | CDAC:GANG = 1 | + ----------------------------------------- + | C1 | OUT[1:4] | OUT[1:3] | + ----------------------------------------- + | C2 | OUT[5:6] | OUT[4:6] | + ----------------------------------------- + | C3 | OUT[7:8] | OUT[7:9] | + ----------------------------------------- + | C4 | OUT[9:12] | OUT[10:12] | + ----------------------------------------- + +Example: +lmp92001@20 { + compatible = "ti,lmp92001"; + reg = <0x20>; + + lmp92001-dac { + compatible = "ti,lmp92001-dac"; + ti,lmp92001-dac-hiz = /bits/ 8 <0>; + ti,lmp92001-dac-outx = /bits/ 8 <0>; + ti,lmp92001-dac-gang = /bits/ 8 <0>; + }; +}; -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html