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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, TI81xx)
- 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).
- interrupts : Interrupt number for McASP
- op-mode : I2S/DIT ops mode.
- tdm-slots : Slots for TDM operation.
- num-serializer : Serializers used by McASP.
- serial-dir : A list of serializer pin mode. The list number should be equal
to "num-serializer" parameter. Each entry is a number indication
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
Example:
mcasp0: mcasp0@1d00000 {
compatible = "ti,da830-mcasp-audio";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x100000 0x3000>;
reg-names "mpu";
interrupts = <82 83>;
op-mode = <0>; /* MCASP_IIS_MODE */
tdm-slots = <2>;
num-serializer = <16>;
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>;
};
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