39 lines
1.7 KiB
Plaintext
39 lines
1.7 KiB
Plaintext
Freescale Synchronous Serial Interface
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The SSI is a serial device that communicates with audio codecs. It can
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be programmed in AC97, I2S, left-justified, or right-justified modes.
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Required properties:
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- compatible : compatible list, containing "fsl,ssi"
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- cell-index : the SSI, <0> = SSI1, <1> = SSI2, and so on
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- reg : offset and length of the register set for the device
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- interrupts : <a b> where a is the interrupt number and b is a
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field that represents an encoding of the sense and
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level information for the interrupt. This should be
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encoded based on the information in section 2)
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depending on the type of interrupt controller you
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have.
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- interrupt-parent : the phandle for the interrupt controller that
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services interrupts for this device.
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- fsl,mode : the operating mode for the SSI interface
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"i2s-slave" - I2S mode, SSI is clock slave
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"i2s-master" - I2S mode, SSI is clock master
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"lj-slave" - left-justified mode, SSI is clock slave
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"lj-master" - l.j. mode, SSI is clock master
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"rj-slave" - right-justified mode, SSI is clock slave
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"rj-master" - r.j., SSI is clock master
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"ac97-slave" - AC97 mode, SSI is clock slave
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"ac97-master" - AC97 mode, SSI is clock master
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Optional properties:
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- codec-handle : phandle to a 'codec' node that defines an audio
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codec connected to this SSI. This node is typically
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a child of an I2C or other control node.
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Child 'codec' node required properties:
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- compatible : compatible list, contains the name of the codec
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Child 'codec' node optional properties:
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- clock-frequency : The frequency of the input clock, which typically
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comes from an on-board dedicated oscillator.
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