On Thu, Sep 18, 2014 at 10:01 PM, Jesse Cobra <[email protected]> wrote: > Earlier today I did some testing with the 3.8.13 kernel and an audio cape. > > When running the alsa loop test latency.c I had much lower latency and less > XRUNs with PREMPT enabled. Something like 3ms analog audio in to analog > audio out versus maybe 6ms. > > Thinking of upgrading to the 3.14 kernel but I was not sure if I would have > any issue with the audio cape, SPI, and analog input device tree overlays... > > CAPE=BB-BONE-AUDI-02,cape-bone-iio,BB-SPI1-01-00A0
Well, the audio works, spi1 should.. iio, i can look at trying tomorrow.. If you want to atleast test spi1, that would be aweome.. just: sudo apt-get update sudo apt-get install linux-image-3.14.19-ti-r23 Then following these instructions: http://elinux.org/Beagleboard:Capes_3.8_to_3.14#Custom_dtb Disable: #include "am335x-boneblack-nxp-hdmi-audio.dtsi" -> /* #include "am335x-boneblack-nxp-hdmi-audio.dtsi" */ Enable: #include "am335x-boneblack-nxp-hdmi-no-audio.dtsi" Enable: spi1 or spi1a #include "am335x-bone-spi1-spidev.dtsi" or #include "am335x-bone-spi1a-spidev.dtsi" Enable: audio: #include "am335x-bone-audio.dtsi" make sudo make install sudo reboot Note, we changed a couple things underneath, so we might have to fix a couple "pinmux" dmesg errors.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
