Tiny Core Base > piCore Test Releases
piCore-6.1alpha4
jgrulich:
I've replaced the firmware with the one from 22.March and seems it to be more stable and overlay is working better too.
Due to much larger start.elf and start_x.elf it's necessary to create new SD partitions with larger primary FAT one, at least 18MB.
sbp:
--- Quote from: bestguy on March 24, 2015, 08:25:21 AM ---Is it possible for You to compile the actual kernelsources, because for several Hifiberry-DAC-Owners there is an important patch in hifiberry-dac.c which enables several old amplifiers to play the audio stream. I tried it and didn`t suceed. (see here: https://github.com/raspberrypi/linux/pull/899)
--- End quote ---
Hi
I have build the 3.18.9 alsa modules with the most recent fixes - please try them:
https://www.dropbox.com/s/qiz83lh192t30xd/alsa-modules-3.18.9-piCore%2B.tcz?dl=0
https://www.dropbox.com/s/7pb65479lyu2uzy/alsa-modules-3.18.9-piCore%2B.tcz.md5.txt?dl=0
Regards
Steen
jgrulich:
Yesterday was released new krnel 3.18.10 with a lot, lot of important patches.
Mainly the kernel panic when DT enabled at the A+ board may be probably solved too.
Be patient and wait some time until Béla will release the new piCore based on this kernel.
bmarkus:
I'm compiling 3.18.10 If everything goes well new release will come in next days
Mucke:
--- Quote from: bmarkus on March 21, 2015, 05:23:04 AM ---
--- Quote from: jgrulich on March 21, 2015, 05:16:26 AM ---I hoped that this release will support the Cirrus Logic Audio Card (Wolfson) as it was discussed some time ago.
Please provide info when this will be available, if ever, to know if I'll may use this one which I already have, or to move to Texas B-B DAC based sound cards like a hifibbery, iqaudio and others.
--- End quote ---
No idea what is going with Wolfson card. Open a ticket at GitHub and ask.
--- End quote ---
In the meantime Cirrus Logic has updated their github with Pi2 drivers for the Cirrus Logic Audio Card. See https://github.com/CirrusLogic/rpi-linux/wiki/Building-the-code for instructions. I have followed them with a Rasbian kernel compilation and the driver works.
But I'm interested in getting the sound card running with piCore-6.1alpha4. Up to now I have not been successful.
So everything works along the instructions. The kernel is compiled and it boots. But the soundcard is not recognized.
As far as I have seen piCore-6.1alpha4 can load overlays. At least the files in the boot folder are there like with Rasbian.
The overlay logic also seems to start as lsmod shows a "partial" set of loaded modules. So some of them are missed.
Right now I guess that piCore does not handle the required /etc/modprobe.d/raspi-blacklist.conf file correctly. Here the setting is
--- Code: ---softdep arizona-spi pre: arizona-ldo1
softdep spi-bcm2708 pre: fixed
--- End code ---
which defines some dependency of modules loaded before another. I do not know if this is working correctly as dmesg reports failures with these modules.
Unfortunately it is beyond my skills, I do not understand the logic of modprobe.conf and modprobe.d and when/how they are interpreted.
Ok, we know that Rasbian is working with the driver but not piCore-6.1alpha4. I have compiled the kernel both on Pi2 and with cross-compilation. No difference in the result.
- Mucke
PS: WARNING: Before someone else tries to use the modules without device tree: it will definitely not work. This is confirmed by the contributors of the driver. So don't try it.
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