#linux-rockchip on 2016-08-13 — irc logs at freenode.irclog.whitequark.org

2014-10-07 12:46 ChanServ changed the topic of #linux-rockchip to: Rockchip development discussion | Wiki at http://linux-rockchip.info | Logs at http://irclog.whitequark.org/linux-rockchip | ML at http://groups.google.com/group/linux-rockchip

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19:55 <mmind00> via: sound is in mainline as of 4.8-rc1, I think someone reported suspend being broken - nobody had time to investigate yet

19:55 <via> any reason to use your fork vs mainline anymore?

19:59 <ayaka> mmind00, do you talk about i2s in rk?

19:59 <mmind00> ayaka: more like sound on veyron chromebooks

20:00 <ayaka> mmind00, in my memory, there is some problem with DMA in i2s subsystem

20:00 <ayaka> I am adding support sound support for firefly reload

20:00 <mmind00> ayaka: I think that got addressed with a quirk

20:01 <mmind00> via: the only thing not in mainline is the mali stuff

20:01 <mmind00> via: everything else (especially the displayport driver) is in mainline now

20:01 <via> ok

20:01 <via> thanks

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20:01 <ayaka> mmind00, I though the rk give a library for chrome book

20:02 <mmind00> ayaka: anyway I did have sound on my veyron chromebook ... you need the alsa ucm profile of course (available in the latest alsa release)

20:04 <mmind00> ayaka: what do you mean with library?

20:04 <ayaka> mmind00, I hear that the rk release library to do some quirk to fix DMA issue with i2s

20:06 <ayaka> mmind00, I am not go with pulseaudio yet, still debug the dts and alsa

20:06 <ayaka> I could create the sound card, but the output is a mess

20:07 <mmind00> ayaka: if you look at https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/dma/pl330.c you can see the quirk for the flushp issue and some burst fixes in february and march

20:07 <ayaka> mmind00, ok I see

20:11 <ayaka> mmind00, anyway I may start that issue in next weekend

20:11 <ayaka> if I could submit the fix for usb today

20:12 <mmind00> ayaka: veyron needs and ucm profile to make sound work: http://git.alsa-project.org/?p=alsa-lib.git;a=tree;f=src/conf/ucm/VEYRON-I2S not sure if your board needs one as well

20:13 <ayaka> mmind00, I should that is used for pulseaudio? not using alsa directly?

20:14 <mmind00> ayaka: don't know ... after mplayer played some audio file I was satisfied and didn't dig deeper

20:16 <ayaka> mmind00, which audio codec is used at veyron ?

20:17 <mmind00> ayaka: max98090 according to the dts in mainline :-)

20:18 <ayaka> mmind00, I still using the 4.7, I didn't notice the audio is added to 4.8

20:19 <mmind00> ayaka: hehe, yeah that is a common pattern ... i.e. maintainers always live 1 or two kernel versions ahead and I'm handling stuff for 4.9 currently :-)

20:20 <ayaka> well it didn't use simple-sound-card

20:28 <ayaka> mmind00, and thank you for you suggestion

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