Hello Bo, On Monday 14 April 2014, 16:39:43 wrote Bo Shen: > On 04/12/2014 05:08 PM, Alexander Stein wrote: > > This set of patches add device tree support for the AC97 controller found > > on AT91SAM9263. > > The first two patches are minor cleanup, while the last ones add the actual > > support. > > I just test the whole patch series, and find issues to work with device > tree kernel. > When we use dt kernel, no where assign the device id (so take it as > "-1"), so when register devices, it will be /dev/snd/pcmC0D-1p and > /dev/snd/pcmC0D-1c. So, the sound won't work. > > The root cause is that when call "snd_pcm_new", it will pass > "chip->pdev->id" as parameter. > > So, I am thinking whether this should be fix in <sound/atmel/ac97c.c> or > in <sound/core/pcm.c> Ah. thanks for figuring out. I also noticed later that e.g. aplay actually doesn't work, but could not figure out why. pcmC0D-1c looked valid at first glance I wasn't aware that this includes a -1 :) I was already happy that the controller found the codec. Best regards, Alexander -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
