| Texas Instruments McASP controller |
| |
| Required properties: |
| - compatible : |
| "ti,dm646x-mcasp-audio" : for DM646x platforms |
| "ti,da830-mcasp-audio" : for both DA830 & DA850 platforms |
| "ti,am33xx-mcasp-audio" : for AM33xx platforms (AM33xx, AM43xx, TI81xx) |
| "ti,dra7-mcasp-audio" : for DRA7xx platforms |
| |
| - reg : Should contain reg specifiers for the entries in the reg-names property. |
| - reg-names : Should contain: |
| * "mpu" for the main registers (required). For compatibility with |
| existing software, it is recommended this is the first entry. |
| * "dat" for separate data port register access (optional). |
| - op-mode : I2S/DIT ops mode. 0 for I2S mode. 1 for DIT mode used for S/PDIF, |
| IEC60958-1, and AES-3 formats. |
| - tdm-slots : Slots for TDM operation. Indicates number of channels transmitted |
| or received over one serializer. |
| - serial-dir : A list of serializer configuration. Each entry is a number |
| indication for serializer pin direction. |
| (0 - INACTIVE, 1 - TX, 2 - RX) |
| - dmas: two element list of DMA controller phandles and DMA request line |
| ordered pairs. |
| - dma-names: identifier string for each DMA request line in the dmas property. |
| These strings correspond 1:1 with the ordered pairs in dmas. The dma |
| identifiers must be "rx" and "tx". |
| |
| Optional properties: |
| |
| - ti,hwmods : Must be "mcasp<n>", n is controller instance starting 0 |
| - tx-num-evt : FIFO levels. |
| - rx-num-evt : FIFO levels. |
| - sram-size-playback : size of sram to be allocated during playback |
| - sram-size-capture : size of sram to be allocated during capture |
| - interrupts : Interrupt numbers for McASP |
| - interrupt-names : Known interrupt names are "tx" and "rx" |
| - pinctrl-0: Should specify pin control group used for this controller. |
| - pinctrl-names: Should contain only one value - "default", for more details |
| please refer to pinctrl-bindings.txt |
| - fck_parent : Should contain a valid clock name which will be used as parent |
| for the McASP fck |
| |
| Example: |
| |
| mcasp0: mcasp0@1d00000 { |
| compatible = "ti,da830-mcasp-audio"; |
| reg = <0x100000 0x3000>; |
| reg-names "mpu"; |
| interrupts = <82>, <83>; |
| interrupt-names = "tx", "rx"; |
| op-mode = <0>; /* MCASP_IIS_MODE */ |
| tdm-slots = <2>; |
| serial-dir = < |
| 0 0 0 0 /* 0: INACTIVE, 1: TX, 2: RX */ |
| 0 0 0 0 |
| 0 0 0 1 |
| 2 0 0 0 >; |
| tx-num-evt = <1>; |
| rx-num-evt = <1>; |
| }; |
