| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | interrupt-names = "rx", "tx"; |
| 47 | dmas = <&edma0 3 1 |
| 48 | &edma0 2 1>; |
| 49 | dma-names = "tx", "rx"; |
| 50 | }; |