Hi Pierre, I downloaded 4.3 stable kernel, and I applied all the commits in the repo you forwarded to me. I'm running into an issue, where after doing those instructions: "iasl -tc dsdt_minnow.dsl mv dsdt_minnow.hex include/ the options following options need to be set in the .config for the tables to be taken into account: CONFIG_ACPI_CUSTOM_DSDT_FILE=dsdt_minnow.hex CONFIG_ACPI_CUSTOM_DSDT=y" " I am not able to boot the kernel. The last message I see on the screen before it goes blank is the system is trying to load rmfs. If I take the kernel with your patches however, and do not set the Config_ACPI_CUSTOM_DST_FILE to dsdt_minnow.hex and do not run the iasl tool. ( I just take the kernel with the patches) the system loads. On the same note I should mention that I am running on Atom E3825 64 bit. Thanks, Michael On Tue, Nov 10, 2015 at 11:59 AM, Michael Pogrebinsky < michael.pogrebinsky@xxxxxxxxx> wrote: > Hi Pierre, > Thank you so much for your reply, and for sharing your repo. > This is great news for me, as I was blocked for a while on this issue. And > I'm particularly happy that this is all done on top of the 4.3 Kernel, this > is very professional of you. I will try the code, and definitely let you > know how it goes, or if I have any issues. > > Thank you again, > Michael > > > > On Tue, Nov 10, 2015 at 10:53 AM, Pierre-Louis Bossart < > pierre-louis.bossart@xxxxxxxxxxxxxxx> wrote: > >> Hi Michael, >> >> I have the MinnowBoard Max with Baytrail Atom (ValleyView) SoC. >>> I'm attempting to write an Alsa (ASoC) driver for my sound card to >>> work with this board. >>> PCM should work through I2S for this sound card I have. >>> >> >> Good to hear. There are several folks in Intel trying to enable I2S over >> the low-speed connector for 3rd party enablement or help 'makers'. This is >> still work-in-progress but we can already share some elements of >> information based on our own experience: >> 1. the default 0.82 firmware doesn't enable the I2S pins, we are >> currently using a DSDT override to configure them. >> 2. the audio codec needs to be registered as a child of I2C6 (it's >> typically I2C2 on regular baytrail platforms). this is also part of the >> DSDT override. >> 3. since we need to support multiple audio codecs, we'd like to add a >> mechanism to add information in the SSDT table to be able to boot the same >> kernel and select the right drivers. Alternatively you will have to use the >> DSDT override method until this mechanism is ready. >> 4. there is no MCLK on existing MinnowBoards, so your codec will have to >> drive its PLL from the BLCK. newer versions of the MinnowBoard Turbot will >> support an MCLK but they are in pre-production stage and to the best of my >> knowledge not available commercially yet. >> 5. to get the best long-term support you really want to use the newer >> DPCM-based driver/firmware for e.g 24-bit, TDM and deep-buffer support. We >> have a set of patches that have not been published upstream yet but if you >> are interested you can look at my github >> https://github.com/plbossart/sound/tree/minnow-v4.3-24bit. In theory if >> you take this code and change the DSDT to support your _HID just like it >> was done for the rt5651 the drivers should load and register a sound card. >> Disclaimer: there is no official support on this branch and rebases/fixes >> may happen at any time. the code will be submitted upstream when ready. >> >> If you provide more information on which codec you are trying to link to >> we can help further. >> -Pierre >> > > > > -- > > [image: DAQRI] <http://daqri.com/> > > Michael Pogrebinsky > > Senior Android Developer - DAQRI Smart Helmet Applications > > *Tel:* *844-327-7443* > > michael.pogrebinsky@xxxxxxxxx <stephen.keegan@xxxxxxxxx> > DAQRI.com <http://daqri.com/> > -- [image: DAQRI] <http://daqri.com/> Michael Pogrebinsky Senior Android Developer - DAQRI Smart Helmet Applications *Tel:* *844-327-7443* michael.pogrebinsky@xxxxxxxxx <stephen.keegan@xxxxxxxxx> DAQRI.com <http://daqri.com/> _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
