Kernel-4.18.0-80.el8_atmel-class

• Atmel ClassD driver under ALSA SoC architecture

Required properties:

• compatible
  Should be “atmel,sama5d2-classd”.
• reg
  Should contain ClassD registers location and length.
• interrupts
  Should contain the IRQ line for the ClassD.
• dmas
  One DMA specifiers as described in atmel-dma.txt and dma.txt files.
• dma-names
  Must be “tx”.
• clock-names
  Tuple listing input clock names.
  Required elements: “pclk” and “gclk”.
• clocks
  Please refer to clock-bindings.txt.
• assigned-clocks
  Should be <&classd_gclk>.

Optional properties:

• pinctrl-names, pinctrl-0
  Please refer to pinctrl-bindings.txt.
• atmel,model
  The user-visible name of this sound complex.
  The default value is “CLASSD”.
• atmel,pwm-type
  PWM modulation type, “single” or “diff”.
  The default value is “single”.
• atmel,non-overlap-time
  Set non-overlapping time, the unit is nanosecond(ns).
  There are four values,
  <5>, <10>, <15>, <20>, the default value is <10>.
  Non-overlapping will be disabled if not specified.

Example:
classd: classd@fc048000 {
compatible = “atmel,sama5d2-classd”;
reg = <0xfc048000 0x100>;
interrupts = <59 IRQ_TYPE_LEVEL_HIGH 7>;
dmas = <&dma0
(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
| AT91_XDMAC_DT_PERID(47))>;
dma-names = “tx”;
clocks = <&classd_clk>, <&classd_gclk>;
clock-names = “pclk”, “gclk”;
assigned-clocks = <&classd_gclk>;

    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_classd_default>;
    atmel,model = "classd @ SAMA5D2-Xplained";
    atmel,pwm-type = "diff";
    atmel,non-overlap-time = <10>;

};