diff options
Diffstat (limited to 'dts/Bindings/sound/fsl,ssi.txt')
| -rw-r--r-- | dts/Bindings/sound/fsl,ssi.txt | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/dts/Bindings/sound/fsl,ssi.txt b/dts/Bindings/sound/fsl,ssi.txt index 5b76be45d1..d415888e13 100644 --- a/dts/Bindings/sound/fsl,ssi.txt +++ b/dts/Bindings/sound/fsl,ssi.txt @@ -20,24 +20,8 @@ Required properties: have. - interrupt-parent: The phandle for the interrupt controller that services interrupts for this device. -- fsl,playback-dma: Phandle to a node for the DMA channel to use for - playback of audio. This is typically dictated by SOC - design. See the notes below. -- fsl,capture-dma: Phandle to a node for the DMA channel to use for - capture (recording) of audio. This is typically dictated - by SOC design. See the notes below. - fsl,fifo-depth: The number of elements in the transmit and receive FIFOs. This number is the maximum allowed value for SFCSR[TFWM0]. -- fsl,ssi-asynchronous: - If specified, the SSI is to be programmed in asynchronous - mode. In this mode, pins SRCK, STCK, SRFS, and STFS must - all be connected to valid signals. In synchronous mode, - SRCK and SRFS are ignored. Asynchronous mode allows - playback and capture to use different sample sizes and - sample rates. Some drivers may require that SRCK and STCK - be connected together, and SRFS and STFS be connected - together. This would still allow different sample sizes, - but not different sample rates. - clocks: "ipg" - Required clock for the SSI unit "baud" - Required clock for SSI master mode. Otherwise this clock is not used @@ -61,6 +45,24 @@ Optional properties: - fsl,mode: The operating mode for the AC97 interface only. "ac97-slave" - AC97 mode, SSI is clock slave "ac97-master" - AC97 mode, SSI is clock master +- fsl,ssi-asynchronous: + If specified, the SSI is to be programmed in asynchronous + mode. In this mode, pins SRCK, STCK, SRFS, and STFS must + all be connected to valid signals. In synchronous mode, + SRCK and SRFS are ignored. Asynchronous mode allows + playback and capture to use different sample sizes and + sample rates. Some drivers may require that SRCK and STCK + be connected together, and SRFS and STFS be connected + together. This would still allow different sample sizes, + but not different sample rates. +- fsl,playback-dma: Phandle to a node for the DMA channel to use for + playback of audio. This is typically dictated by SOC + design. See the notes below. + Only used on Power Architecture. +- fsl,capture-dma: Phandle to a node for the DMA channel to use for + capture (recording) of audio. This is typically dictated + by SOC design. See the notes below. + Only used on Power Architecture. Child 'codec' node required properties: - compatible: Compatible list, contains the name of the codec |