On Wed, 2 Jul 2014 18:56:28 +0200 Andrew Lunn <andrew@xxxxxxx> wrote: > How well will this work with Russell concept of a front end and two > backends? Can you uses your CODEC twice, once with the I2S backend and > a second time with the S/PDIF backend? Hi Andrew, The TDA998x CODEC has two functions: - it sets the possible formats and rates when the screen connects and - it sets the audio input port when audio streaming starts. I tested this CODEC with both DAPM and DPCM. If the audio subsystem asks for streaming on both I2S and S/PDIF, only the last call is served (this depends on the order of the DAI links in the audio card creation table). As I told to Russell, DPCM just asks for a 'system' DAI (front-end), but it also asks for some additional code in the kirkwood DMA driver because all PCMs are activated on streaming start. -- Ken ar c'hentañ | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/ -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
