projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3e3b8c34 HG |
1 | Texas Instruments McASP controller |
| 2 | ||
| 3 | Required properties: | |
| 4 | - compatible : | |
| 5 | "ti,dm646x-mcasp-audio" : for DM646x platforms | |
| 6 | "ti,da830-mcasp-audio" : for both DA830 & DA850 platforms | |
| 3af9e031 | 7 | "ti,am33xx-mcasp-audio" : for AM33xx platforms (AM33xx, TI81xx) |
| 3e3b8c34 | 8 | |
| 256ba181 JS |
9 | - reg : Should contain reg specifiers for the entries in the reg-names property. |
| 10 | - reg-names : Should contain: | |
| 11 | * "mpu" for the main registers (required). For compatibility with | |
| 12 | existing software, it is recommended this is the first entry. | |
| 13 | * "dat" for separate data port register access (optional). | |
| 62561b39 JS |
14 | - op-mode : I2S/DIT ops mode. 0 for I2S mode. 1 for DIT mode used for S/PDIF, |
| 15 | IEC60958-1, and AES-3 formats. | |
| 16 | - tdm-slots : Slots for TDM operation. Indicates number of channels transmitted | |
| 17 | or received over one serializer. | |
| 62561b39 JS |
18 | - serial-dir : A list of serializer configuration. Each entry is a number |
| 19 | indication for serializer pin direction. | |
| 20 | (0 - INACTIVE, 1 - TX, 2 - RX) | |
| 4023fe6f JS |
21 | - dmas: two element list of DMA controller phandles and DMA request line |
| 22 | ordered pairs. | |
| 23 | - dma-names: identifier string for each DMA request line in the dmas property. | |
| 24 | These strings correspond 1:1 with the ordered pairs in dmas. The dma | |
| 25 | identifiers must be "rx" and "tx". | |
| 3e3b8c34 | 26 | |
| 3e3b8c34 HG |
27 | Optional properties: |
| 28 | ||
| 29 | - ti,hwmods : Must be "mcasp<n>", n is controller instance starting 0 | |
| 30 | - tx-num-evt : FIFO levels. | |
| 31 | - rx-num-evt : FIFO levels. | |
| 32 | - sram-size-playback : size of sram to be allocated during playback | |
| 33 | - sram-size-capture : size of sram to be allocated during capture | |
| 62561b39 JS |
34 | - interrupts : Interrupt numbers for McASP, currently not used by the driver |
| 35 | - interrupt-names : Known interrupt names are "tx" and "rx" | |
| 36 | - pinctrl-0: Should specify pin control group used for this controller. | |
| 37 | - pinctrl-names: Should contain only one value - "default", for more details | |
| 38 | please refer to pinctrl-bindings.txt | |
| 39 | ||
| 3e3b8c34 HG |
40 | |
| 41 | Example: | |
| 42 | ||
| 43 | mcasp0: mcasp0@1d00000 { | |
| 44 | compatible = "ti,da830-mcasp-audio"; | |
| 3e3b8c34 | 45 | reg = <0x100000 0x3000>; |
| 256ba181 | 46 | reg-names "mpu"; |
| 62561b39 JS |
47 | interrupts = <82>, <83>; |
| 48 | interrupts-names = "tx", "rx"; | |
| 3e3b8c34 HG |
49 | op-mode = <0>; /* MCASP_IIS_MODE */ |
| 50 | tdm-slots = <2>; | |
| 3e3b8c34 HG |
51 | serial-dir = < |
| 52 | 0 0 0 0 /* 0: INACTIVE, 1: TX, 2: RX */ | |
| 53 | 0 0 0 0 | |
| 54 | 0 0 0 1 | |
| 55 | 2 0 0 0 >; | |
| 56 | tx-num-evt = <1>; | |
| 57 | rx-num-evt = <1>; | |
| 58 | }; |