On Wed, Oct 22, 2014 at 3:04 AM, Valentin Raevsky valentin@compulab.co.il wrote:
On 10/22/2014 01:37 AM, Jonathan Bennett wrote:
On Tue, Oct 21, 2014 at 1:49 PM, Jonathan Bennett <jbscience87@gmail.com mailto:jbscience87@gmail.com> wrote:
On Tue, Oct 21, 2014 at 1:12 PM, Fabio Estevam <festevam@gmail.com <mailto:festevam@gmail.com>> wrote: On Tue, Oct 21, 2014 at 4:04 PM, Jonathan Bennett <jbscience87@gmail.com <mailto:jbscience87@gmail.com>> wrote: > I realized something just last night. I was grabbing changesfrom the devel > branch ofgithub.com/utilite-computer http://github.com/utilite-computer, thinking that those changes were > based off the vanilla 3.10 kernel. Those changes are actually based on the > Freescale 3.10 kernel. I pulled a Freescale patch that is obviously missing: > "ENGR00276249-1 ARM: imx6q: Add missing baud clock for ssi" I also switched
The baud clock patch is present in 3.18-rc1: commit 935632e9938e3e286b9c62a7e54d35c428533cc9 Author: Shengjiu Wang <shengjiu.wang@freescale.com <mailto:shengjiu.wang@freescale.com>> Date: Tue Sep 9 17:13:26 2014 +0800 ARM: dts: imx6qdl: add baud clock and clock-names for ssi Baud clock is used for bit clock generation in master mode. Ipg clock is peripheral clock and peripheral access clock. Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com <mailto:shengjiu.wang@freescale.com>> Signed-off-by: Shawn Guo <shawn.guo@freescale.c Awesome! It's great to see this stuff go mainline.I have rebased to 3.18 rc-1. It has simplified the patch set a bit, as more of the Freescale things have hit mainline. http://pastebin.com/C652GKe3 is my patchset. Again, the card registers and thinks it plays, but there is no actual output.
Make sure that "Output Mixer HiFi Playback Switch" is on Issue: # amixer cset numid=14,iface=MIXER,name='Output Mixer HiFi Playback Switch' on # alsactl store wm8731audio
BRILLIANT!!! We've got sound. Thank you for the answer. Questions: First, what is the best way to set that to on by default? I know "alsactl store wm8731audio" Makes it survive reboots. On a fresh install, though, that should probably default to on.
Second: I would love to see support for this get mainlined. Should I go back and try to get simple-audio-card working, or stick with the compulab glue driver?
> back to imx-wm8731.c for the driver. With this setup, thedriver registers, > and speaker-test thinks it plays, however there is no actual sound output. I > call it progress.
Great progress: some things to check : 1. audmux settings Well, the imx-wm8731 driver (It's really just glue for loading wm8731) does have audmux settings in it. These get called during the module probe. Not sure what might need to change there. My thoughts are that they should be correct. 2. Can you try to run 'alsamixer' and make sure that the volume is not at the lowest level? Yeah, I've made sure to check alsamixer and turn the volume up. Still no joy.