projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 391ac3ef SW |
1 | * Atmel ClassD driver under ALSA SoC architecture |
| 2 | ||
| 3 | Required properties: | |
| 4 | - compatible | |
| 5 | Should be "atmel,sama5d2-classd". | |
| 6 | - reg | |
| 7 | Should contain ClassD registers location and length. | |
| 8 | - interrupts | |
| 9 | Should contain the IRQ line for the ClassD. | |
| 10 | - dmas | |
| 11 | One DMA specifiers as described in atmel-dma.txt and dma.txt files. | |
| 12 | - dma-names | |
| 13 | Must be "tx". | |
| 14 | - clock-names | |
| 15 | Tuple listing input clock names. | |
| 16 | Required elements: "pclk", "gclk" and "aclk". | |
| 17 | - clocks | |
| 18 | Please refer to clock-bindings.txt. | |
| bf400242 SW |
19 | - assigned-clocks |
| 20 | Should be <&classd_gclk>. | |
| 21 | - assigned-clock-parents | |
| 22 | Should be <&audio_pll_pmc>. | |
| 391ac3ef SW |
23 | |
| 24 | Optional properties: | |
| 25 | - pinctrl-names, pinctrl-0 | |
| 26 | Please refer to pinctrl-bindings.txt. | |
| 27 | - atmel,model | |
| 28 | The user-visible name of this sound complex. | |
| 29 | The default value is "CLASSD". | |
| 30 | - atmel,pwm-type | |
| 31 | PWM modulation type, "single" or "diff". | |
| 32 | The default value is "single". | |
| 33 | - atmel,non-overlap-time | |
| 34 | Set non-overlapping time, the unit is nanosecond(ns). | |
| 35 | There are four values, | |
| 36 | <5>, <10>, <15>, <20>, the default value is <10>. | |
| 37 | Non-overlapping will be disabled if not specified. | |
| 38 | ||
| 39 | Example: | |
| 40 | classd: classd@fc048000 { | |
| 41 | compatible = "atmel,sama5d2-classd"; | |
| 42 | reg = <0xfc048000 0x100>; | |
| 43 | interrupts = <59 IRQ_TYPE_LEVEL_HIGH 7>; | |
| 44 | dmas = <&dma0 | |
| 45 | (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | |
| 46 | | AT91_XDMAC_DT_PERID(47))>; | |
| 47 | dma-names = "tx"; | |
| 48 | clocks = <&classd_clk>, <&classd_gclk>, <&audio_pll_pmc>; | |
| 49 | clock-names = "pclk", "gclk", "aclk"; | |
| bf400242 SW |
50 | assigned-clocks = <&classd_gclk>; |
| 51 | assigned-clock-parents = <&audio_pll_pmc>; | |
| 391ac3ef SW |
52 | |
| 53 | pinctrl-names = "default"; | |
| 54 | pinctrl-0 = <&pinctrl_classd_default>; | |
| 55 | atmel,model = "classd @ SAMA5D2-Xplained"; | |
| 56 | atmel,pwm-type = "diff"; | |
| 57 | atmel,non-overlap-time = <10>; | |
| 58 | }; |