Commit | Line | Data |
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22225835 PK |
1 | Texas Instruments DaVinci McBSP module |
2 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
3 | ||
4 | This binding describes the "Multi-channel Buffered Serial Port" (McBSP) | |
5 | audio interface found in some TI DaVinci processors like the OMAP-L138 or AM180x. | |
6 | ||
7 | ||
8 | Required properties: | |
9 | ~~~~~~~~~~~~~~~~~~~~ | |
10 | - compatible : | |
11 | "ti,da850-mcbsp" : for DA850, AM180x and OPAM-L138 platforms | |
12 | ||
13 | - reg : physical base address and length of the controller memory mapped | |
14 | region(s). | |
15 | - reg-names : Should contain: | |
16 | * "mpu" for the main registers (required). | |
17 | * "dat" for the data FIFO (optional). | |
18 | ||
19 | - dmas: three element list of DMA controller phandles, DMA request line and | |
20 | TC channel ordered triplets. | |
21 | - dma-names: identifier string for each DMA request line in the dmas property. | |
22 | These strings correspond 1:1 with the ordered pairs in dmas. The dma | |
23 | identifiers must be "rx" and "tx". | |
24 | ||
25 | Optional properties: | |
26 | ~~~~~~~~~~~~~~~~~~~~ | |
27 | - interrupts : Interrupt numbers for McBSP | |
28 | - interrupt-names : Known interrupt names are "rx" and "tx" | |
29 | ||
30 | - pinctrl-0: Should specify pin control group used for this controller. | |
31 | - pinctrl-names: Should contain only one value - "default", for more details | |
32 | please refer to pinctrl-bindings.txt | |
33 | ||
34 | Example (AM1808): | |
35 | ~~~~~~~~~~~~~~~~~ | |
36 | ||
37 | mcbsp0: mcbsp@1d10000 { | |
38 | compatible = "ti,da850-mcbsp"; | |
39 | pinctrl-names = "default"; | |
40 | pinctrl-0 = <&mcbsp0_pins>; | |
41 | ||
42 | reg = <0x00110000 0x1000>, | |
43 | <0x00310000 0x1000>; | |
44 | reg-names = "mpu", "dat"; | |
45 | interrupts = <97 98>; | |
46 | interrupts-names = "rx", "tx"; | |
47 | dmas = <&edma0 3 1 | |
48 | &edma0 2 1>; | |
49 | dma-names = "tx", "rx"; | |
50 | status = "okay"; | |
51 | }; |