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

[Gary Thomas]

On 2015-03-23 11:41, Andrei Gherzan wrote:
>
>
> On Mon, Mar 23, 2015 at 6:33 PM, Gary Thomas <gary at mlbassoc.com <mailto:gary at mlbassoc.com>> wrote:
>
>     On 2015-03-23 11:13, Alex J Lennon wrote:
>
>
>
>         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 <mailto:schnitzeltony at googlemail.com>>
>                         ---
>                              ...-during-boot-by-compiling-__SND_BCM2835-int.patch | 38
>                         ++++++++++++++++++++++
>                              recipes-kernel/linux/linux-__raspberrypi_3.18.bb <http://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?
>
>
>     Use gstreamer:
>        # gst-launch audiotestsrc ! alsasink
>
>
> I think I tested sound with omxplayer on rpi2... this is pretty strange.

I just tried it with omxplayer - still nothing, sorry.

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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