61 lines
2.4 KiB
Plaintext
61 lines
2.4 KiB
Plaintext
|
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, currently not used by the driver
|
||
|
|
- 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>;
|
||
|
|
};
|