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author | Ingo Molnar <mingo@elte.hu> | 2009-04-08 11:25:42 -0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-04-08 11:26:00 -0400 |
commit | 5af8c4e0fac9838428bd718040b664043a05f37c (patch) | |
tree | 75a01d98ed244db45fe3c734c4a81c1a3d92ac37 /Documentation/powerpc/dts-bindings/fsl/ssi.txt | |
parent | 46e0bb9c12f4bab539736f1714cbf16600f681ec (diff) | |
parent | 577c9c456f0e1371cbade38eaf91ae8e8a308555 (diff) |
Merge commit 'v2.6.30-rc1' into sched/urgent
Merge reason: update to latest upstream to queue up fix
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/powerpc/dts-bindings/fsl/ssi.txt')
-rw-r--r-- | Documentation/powerpc/dts-bindings/fsl/ssi.txt | 68 |
1 files changed, 40 insertions, 28 deletions
diff --git a/Documentation/powerpc/dts-bindings/fsl/ssi.txt b/Documentation/powerpc/dts-bindings/fsl/ssi.txt index a2d963998a65..5ff76c9c57d2 100644 --- a/Documentation/powerpc/dts-bindings/fsl/ssi.txt +++ b/Documentation/powerpc/dts-bindings/fsl/ssi.txt | |||
@@ -4,44 +4,56 @@ The SSI is a serial device that communicates with audio codecs. It can | |||
4 | be programmed in AC97, I2S, left-justified, or right-justified modes. | 4 | be programmed in AC97, I2S, left-justified, or right-justified modes. |
5 | 5 | ||
6 | Required properties: | 6 | Required properties: |
7 | - compatible : compatible list, containing "fsl,ssi" | 7 | - compatible: Compatible list, contains "fsl,ssi". |
8 | - cell-index : the SSI, <0> = SSI1, <1> = SSI2, and so on | 8 | - cell-index: The SSI, <0> = SSI1, <1> = SSI2, and so on. |
9 | - reg : offset and length of the register set for the device | 9 | - reg: Offset and length of the register set for the device. |
10 | - interrupts : <a b> where a is the interrupt number and b is a | 10 | - interrupts: <a b> where a is the interrupt number and b is a |
11 | field that represents an encoding of the sense and | 11 | field that represents an encoding of the sense and |
12 | level information for the interrupt. This should be | 12 | level information for the interrupt. This should be |
13 | encoded based on the information in section 2) | 13 | encoded based on the information in section 2) |
14 | depending on the type of interrupt controller you | 14 | depending on the type of interrupt controller you |
15 | have. | 15 | have. |
16 | - interrupt-parent : the phandle for the interrupt controller that | 16 | - interrupt-parent: The phandle for the interrupt controller that |
17 | services interrupts for this device. | 17 | services interrupts for this device. |
18 | - fsl,mode : the operating mode for the SSI interface | 18 | - fsl,mode: The operating mode for the SSI interface. |
19 | "i2s-slave" - I2S mode, SSI is clock slave | 19 | "i2s-slave" - I2S mode, SSI is clock slave |
20 | "i2s-master" - I2S mode, SSI is clock master | 20 | "i2s-master" - I2S mode, SSI is clock master |
21 | "lj-slave" - left-justified mode, SSI is clock slave | 21 | "lj-slave" - left-justified mode, SSI is clock slave |
22 | "lj-master" - l.j. mode, SSI is clock master | 22 | "lj-master" - l.j. mode, SSI is clock master |
23 | "rj-slave" - right-justified mode, SSI is clock slave | 23 | "rj-slave" - right-justified mode, SSI is clock slave |
24 | "rj-master" - r.j., SSI is clock master | 24 | "rj-master" - r.j., SSI is clock master |
25 | "ac97-slave" - AC97 mode, SSI is clock slave | 25 | "ac97-slave" - AC97 mode, SSI is clock slave |
26 | "ac97-master" - AC97 mode, SSI is clock master | 26 | "ac97-master" - AC97 mode, SSI is clock master |
27 | - fsl,playback-dma: phandle to a node for the DMA channel to use for | 27 | - fsl,playback-dma: Phandle to a node for the DMA channel to use for |
28 | playback of audio. This is typically dictated by SOC | 28 | playback of audio. This is typically dictated by SOC |
29 | design. See the notes below. | 29 | design. See the notes below. |
30 | - fsl,capture-dma: phandle to a node for the DMA channel to use for | 30 | - fsl,capture-dma: Phandle to a node for the DMA channel to use for |
31 | capture (recording) of audio. This is typically dictated | 31 | capture (recording) of audio. This is typically dictated |
32 | by SOC design. See the notes below. | 32 | by SOC design. See the notes below. |
33 | - fsl,fifo-depth: The number of elements in the transmit and receive FIFOs. | ||
34 | This number is the maximum allowed value for SFCSR[TFWM0]. | ||
35 | - fsl,ssi-asynchronous: | ||
36 | If specified, the SSI is to be programmed in asynchronous | ||
37 | mode. In this mode, pins SRCK, STCK, SRFS, and STFS must | ||
38 | all be connected to valid signals. In synchronous mode, | ||
39 | SRCK and SRFS are ignored. Asynchronous mode allows | ||
40 | playback and capture to use different sample sizes and | ||
41 | sample rates. Some drivers may require that SRCK and STCK | ||
42 | be connected together, and SRFS and STFS be connected | ||
43 | together. This would still allow different sample sizes, | ||
44 | but not different sample rates. | ||
33 | 45 | ||
34 | Optional properties: | 46 | Optional properties: |
35 | - codec-handle : phandle to a 'codec' node that defines an audio | 47 | - codec-handle: Phandle to a 'codec' node that defines an audio |
36 | codec connected to this SSI. This node is typically | 48 | codec connected to this SSI. This node is typically |
37 | a child of an I2C or other control node. | 49 | a child of an I2C or other control node. |
38 | 50 | ||
39 | Child 'codec' node required properties: | 51 | Child 'codec' node required properties: |
40 | - compatible : compatible list, contains the name of the codec | 52 | - compatible: Compatible list, contains the name of the codec |
41 | 53 | ||
42 | Child 'codec' node optional properties: | 54 | Child 'codec' node optional properties: |
43 | - clock-frequency : The frequency of the input clock, which typically | 55 | - clock-frequency: The frequency of the input clock, which typically comes |
44 | comes from an on-board dedicated oscillator. | 56 | from an on-board dedicated oscillator. |
45 | 57 | ||
46 | Notes on fsl,playback-dma and fsl,capture-dma: | 58 | Notes on fsl,playback-dma and fsl,capture-dma: |
47 | 59 | ||