[yocto] [meta-raspberrypi][PATCH] make sound work out of the box for raspberrypi2

[Alex J Lennon]

On 23/03/2015 18:08, Gary Thomas wrote:
> On 2015-03-23 10:42, Alex J Lennon wrote:
>>
>>
>> On 23/03/2015 16:59, Gary Thomas wrote:
>>> On 2015-03-22 14:21, Andreas Müller wrote:
>>>> Signed-off-by: Andreas Müller <schnitzeltony at googlemail.com>
>>>> ---
>>>>    ...-during-boot-by-compiling-SND_BCM2835-int.patch | 38
>>>> ++++++++++++++++++++++
>>>>    recipes-kernel/linux/linux-raspberrypi_3.18.bb     |  8 +++--
>>>>    2 files changed, 43 insertions(+), 3 deletions(-)
>>>>    create mode 100644
>>>> recipes-kernel/linux/linux-raspberrypi/0001-start-sound-during-boot-by-compiling-SND_BCM2835-int.patch
>>>>
>>>
>>> I tried this patch (which downloaded very strangely using Thunderbird)
>>> and the
>>> kernel rebuilt fine.  I now have the audio detected, but still no
>>> sound :-(
>>> Again I've tried the internal (phono) speakers as well as HDMI audio.
>>>
>>> Just to prove a point on the [brand new] hardware, I installed
>>> OpenELEC (XBMC)
>>> and it works fine using the HDMI audio.  Sadly when I tried Raspbian
>>> and Ubuntu
>>> there was no sound either...
>>>
>>> Were you (Andreas) able to get any sound with this patch?
>>
>> Sorry to jump in on your conversation Gary but I am also doing some bits
>> and pieces with meta-raspberrypi myself to test out my new-ish RPiv2.
>>
>> I'll have a look at changing the kernel configuration here later, but I
>> did also try changing TEST_MODE in the config.txt which is billed as
>> giving analogue audio and video out at startup. Sure enough I hear the
>> startup beeps.
>>
>> Perhaps this would enable you to verify the hardware is working too?
>
> Verified - this works.  Still no sound when I boot Poky/Yocto.
>
> Have you tried audio output from Linux?

OK that's something then. I'm in the middle of some i.MX6 builds at the
minute but will look at this with the meta-raspberrypi kernel later and
come back to you. I suspect I will see the same as you.

I don't have anything capable of HDMI audio about here so will output a
wav file or something to the analogue jack. What's your simplest test case?

I might also have a look and see if I can get anything out of the
GStreamer1.0 audio/video playback as I'm looking at that too at the minute.

Regards, Alex