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Diffstat (limited to 'Documentation/powerpc/dts-bindings/fsl/ssi.txt')
| -rw-r--r-- | Documentation/powerpc/dts-bindings/fsl/ssi.txt | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/powerpc/dts-bindings/fsl/ssi.txt b/Documentation/powerpc/dts-bindings/fsl/ssi.txt new file mode 100644 index 00000000000..d100555d488 --- /dev/null +++ b/Documentation/powerpc/dts-bindings/fsl/ssi.txt @@ -0,0 +1,38 @@ +Freescale Synchronous Serial Interface + +The SSI is a serial device that communicates with audio codecs. It can +be programmed in AC97, I2S, left-justified, or right-justified modes. + +Required properties: +- compatible : compatible list, containing "fsl,ssi" +- cell-index : the SSI, <0> = SSI1, <1> = SSI2, and so on +- reg : offset and length of the register set for the device +- interrupts : <a b> where a is the interrupt number and b is a + field that represents an encoding of the sense and + level information for the interrupt. This should be + encoded based on the information in section 2) + depending on the type of interrupt controller you + have. +- interrupt-parent : the phandle for the interrupt controller that + services interrupts for this device. +- fsl,mode : the operating mode for the SSI interface + "i2s-slave" - I2S mode, SSI is clock slave + "i2s-master" - I2S mode, SSI is clock master + "lj-slave" - left-justified mode, SSI is clock slave + "lj-master" - l.j. mode, SSI is clock master + "rj-slave" - right-justified mode, SSI is clock slave + "rj-master" - r.j., SSI is clock master + "ac97-slave" - AC97 mode, SSI is clock slave + "ac97-master" - AC97 mode, SSI is clock master + +Optional properties: +- codec-handle : phandle to a 'codec' node that defines an audio + codec connected to this SSI. This node is typically + a child of an I2C or other control node. + +Child 'codec' node required properties: +- compatible : compatible list, contains the name of the codec + +Child 'codec' node optional properties: +- clock-frequency : The frequency of the input clock, which typically + comes from an on-board dedicated oscillator. |