[alsa-devel] [PATCH v3 09/11] ASoC: fsl: remove the fatal error checking on codec-handle

Shawn Guo shawn.guo at linaro.org
Fri Mar 16 04:53:05 CET 2012

On Fri, Mar 16, 2012 at 03:44:43AM +0000, Tabi Timur-B04825 wrote:
> Shawn Guo wrote:
> >> >
> > Something like "fsl-pcm-audio", but different from "fsl-pcm-audio"
> > will be instantiated as a hardware block by device tree,
> > "imx-pcm-audio" is pretty much like a ASoC wrapper for calling
> > dmaengine driver.  So there is no hardware block presenting this
> > "device" in device tree, and we need to instantiate it from cpu DAI
> > driver as Mark suggested.
> Wait, is this the DMA controller?  Because on PowerPC, we have device tree 
> nodes for the DMA controller.  Why don't you have one on i.MX?
We do have a DMA controller node for IMX.

	sdma at 83fb0000 {
		compatible = "fsl,imx51-sdma", "fsl,imx35-sdma";
		reg = <0x83fb0000 0x4000>;
		interrupts = <6>;

But it's instantiated as a dmaengine device backed by dmaengine driver
drivers/dma/imx-dma.c.  "imx-pcm-audio" will just be an ASoC dmaengine
client using dmaengine API.


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