Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | BROADCOM Cygnus Audio I2S/TDM/SPDIF controller |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible : "brcm,cygnus-audio" |
| 5 | - #address-cells: 32bit valued, 1 cell. |
| 6 | - #size-cells: 32bit valued, 0 cell. |
| 7 | - reg : Should contain audio registers location and length |
| 8 | - reg-names: names of the registers listed in "reg" property |
| 9 | Valid names are "aud" and "i2s_in". "aud" contains a |
| 10 | set of DMA, I2S_OUT and SPDIF registers. "i2s_in" contains |
| 11 | a set of I2S_IN registers. |
| 12 | - clocks: PLL and leaf clocks used by audio ports |
| 13 | - assigned-clocks: PLL and leaf clocks |
| 14 | - assigned-clock-parents: parent clocks of the assigned clocks |
| 15 | (usually the PLL) |
| 16 | - assigned-clock-rates: List of clock frequencies of the |
| 17 | assigned clocks |
| 18 | - clock-names: names of 3 leaf clocks used by audio ports |
| 19 | Valid names are "ch0_audio", "ch1_audio", "ch2_audio" |
| 20 | - interrupts: audio DMA interrupt number |
| 21 | |
| 22 | SSP Subnode properties: |
| 23 | - reg: The index of ssp port interface to use |
| 24 | Valid value are 0, 1, 2, or 3 (for spdif) |
| 25 | |
| 26 | Example: |
| 27 | cygnus_audio: audio@180ae000 { |
| 28 | compatible = "brcm,cygnus-audio"; |
| 29 | #address-cells = <1>; |
| 30 | #size-cells = <0>; |
| 31 | reg = <0x180ae000 0xafd>, <0x180aec00 0x1f8>; |
| 32 | reg-names = "aud", "i2s_in"; |
| 33 | clocks = <&audiopll BCM_CYGNUS_AUDIOPLL_CH0>, |
| 34 | <&audiopll BCM_CYGNUS_AUDIOPLL_CH1>, |
| 35 | <&audiopll BCM_CYGNUS_AUDIOPLL_CH2>; |
| 36 | assigned-clocks = <&audiopll BCM_CYGNUS_AUDIOPLL>, |
| 37 | <&audiopll BCM_CYGNUS_AUDIOPLL_CH0>, |
| 38 | <&audiopll BCM_CYGNUS_AUDIOPLL_CH1>, |
| 39 | <&audiopll BCM_CYGNUS_AUDIOPLL_CH2>; |
| 40 | assigned-clock-parents = <&audiopll BCM_CYGNUS_AUDIOPLL>; |
| 41 | assigned-clock-rates = <1769470191>, |
| 42 | <0>, |
| 43 | <0>, |
| 44 | <0>; |
| 45 | clock-names = "ch0_audio", "ch1_audio", "ch2_audio"; |
| 46 | interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>; |
| 47 | |
| 48 | ssp0: ssp_port@0 { |
| 49 | reg = <0>; |
| 50 | }; |
| 51 | |
| 52 | ssp1: ssp_port@1 { |
| 53 | reg = <1>; |
| 54 | }; |
| 55 | |
| 56 | ssp2: ssp_port@2 { |
| 57 | reg = <2>; |
| 58 | }; |
| 59 | |
| 60 | spdif: spdif_port@3 { |
| 61 | reg = <3>; |
| 62 | }; |
| 63 | }; |