Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt

   1 * Amlogic Meson SAR (Successive Approximation Register) A/D converter
   2
   3 Required properties:
   4 - compatible:   depending on the SoC this should be one of:
   5                         - "amlogic,meson8-saradc" for Meson8
   6                         - "amlogic,meson8b-saradc" for Meson8b
   7                         - "amlogic,meson8m2-saradc" for Meson8m2
   8                         - "amlogic,meson-gxbb-saradc" for GXBB
   9                         - "amlogic,meson-gxl-saradc" for GXL
  10                         - "amlogic,meson-gxm-saradc" for GXM
  11                         - "amlogic,meson-axg-saradc" for AXG
  12                         - "amlogic,meson-g12a-saradc" for AXG
  13                 along with the generic "amlogic,meson-saradc"
  14 - reg:          the physical base address and length of the registers
  15 - interrupts:   the interrupt indicating end of sampling
  16 - clocks:       phandle and clock identifier (see clock-names)
  17 - clock-names:  mandatory clocks:
  18                         - "clkin" for the reference clock (typically XTAL)
  19                         - "core" for the SAR ADC core clock
  20                 optional clocks:
  21                         - "adc_clk" for the ADC (sampling) clock
  22                         - "adc_sel" for the ADC (sampling) clock mux
  23 - vref-supply:  the regulator supply for the ADC reference voltage
  24 - #io-channel-cells: must be 1, see ../iio-bindings.txt
  25
  26 Optional properties:
  27 - amlogic,hhi-sysctrl:  phandle to the syscon which contains the 5th bit
  28                         of the TSC (temperature sensor coefficient) on
  29                         Meson8b and Meson8m2 (which used to calibrate the
  30                         temperature sensor)
  31 - nvmem-cells:          phandle to the temperature_calib eFuse cells
  32 - nvmem-cell-names:     if present (to enable the temperature sensor
  33                         calibration) this must contain "temperature_calib"
  34
  35
  36 Example:
  37         saradc: adc@8680 {
  38                 compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc";
  39                 #io-channel-cells = <1>;
  40                 reg = <0x0 0x8680 0x0 0x34>;
  41                 interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>;
  42                 clocks = <&xtal>,
  43                          <&clkc CLKID_SAR_ADC>,
  44                          <&clkc CLKID_SANA>,
  45                          <&clkc CLKID_SAR_ADC_CLK>,
  46                          <&clkc CLKID_SAR_ADC_SEL>;
  47                 clock-names = "clkin", "core", "sana", "adc_clk", "adc_sel";
  48         };