2012-08-27 21:26:42 +08:00
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Texas Instruments McASP controller
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Required properties:
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- compatible :
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"ti,dm646x-mcasp-audio" : for DM646x platforms
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"ti,da830-mcasp-audio" : for both DA830 & DA850 platforms
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2013-10-18 23:37:44 +08:00
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"ti,am33xx-mcasp-audio" : for AM33xx platforms (AM33xx, TI81xx)
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2012-08-27 21:26:42 +08:00
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2013-10-18 23:37:42 +08:00
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- reg : Should contain reg specifiers for the entries in the reg-names property.
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- reg-names : Should contain:
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* "mpu" for the main registers (required). For compatibility with
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existing software, it is recommended this is the first entry.
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* "dat" for separate data port register access (optional).
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2012-08-27 21:26:42 +08:00
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- interrupts : Interrupt number for McASP
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- op-mode : I2S/DIT ops mode.
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- tdm-slots : Slots for TDM operation.
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- num-serializer : Serializers used by McASP.
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- serial-dir : A list of serializer pin mode. The list number should be equal
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to "num-serializer" parameter. Each entry is a number indication
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serializer pin direction. (0 - INACTIVE, 1 - TX, 2 - RX)
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2013-10-18 23:37:43 +08:00
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- dmas: two element list of DMA controller phandles and DMA request line
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ordered pairs.
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- dma-names: identifier string for each DMA request line in the dmas property.
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These strings correspond 1:1 with the ordered pairs in dmas. The dma
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identifiers must be "rx" and "tx".
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2012-08-27 21:26:42 +08:00
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Optional properties:
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- ti,hwmods : Must be "mcasp<n>", n is controller instance starting 0
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- tx-num-evt : FIFO levels.
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- rx-num-evt : FIFO levels.
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- sram-size-playback : size of sram to be allocated during playback
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- sram-size-capture : size of sram to be allocated during capture
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Example:
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mcasp0: mcasp0@1d00000 {
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compatible = "ti,da830-mcasp-audio";
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0x100000 0x3000>;
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2013-10-18 23:37:42 +08:00
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reg-names "mpu";
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2012-08-27 21:26:42 +08:00
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interrupts = <82 83>;
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op-mode = <0>; /* MCASP_IIS_MODE */
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tdm-slots = <2>;
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num-serializer = <16>;
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serial-dir = <
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0 0 0 0 /* 0: INACTIVE, 1: TX, 2: RX */
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0 0 0 0
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0 0 0 1
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2 0 0 0 >;
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tx-num-evt = <1>;
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rx-num-evt = <1>;
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};
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