[alsa-devel] [PATCH] asoc/multi-component: fsl: add support for variable SSI FIFO depth

Mark Brown broonie at opensource.wolfsonmicro.com
Thu Aug 5 13:10:11 CEST 2010

On Wed, Aug 04, 2010 at 03:04:24PM -0500, Timur Tabi wrote:
> Add code that programs the DMA and SSI controllers differently based on the
> FIFO depth of the SSI.
> The SSI devices on the MPC8610 and the P1022 are identical in every way except
> one: the transmit and receive FIFO depth.  On the MPC8610, the depth is eight.
> On the P1022, it's fifteen.  The device tree nodes for the SSI include a
> "fsl,fifo-depth" property that specifies the FIFO depth.

My first thought with this is that it's not something I'd expect to be
in the device tree at all - it looks like it's all properties of the
silicon which I'd expect the drivers to be able to figure out for
themselves without needing to be told by the device tree.

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