On 04/25/2018 07:56 PM, Tony Lindgren wrote: > * Peter Ujfalusi <peter.ujfalusi@xxxxxx> [180425 16:06]: >> On 04/25/2018 04:50 PM, Tony Lindgren wrote: >>> * Jarkko Nikula <jarkko.nikula@xxxxxxxxxx> [180425 03:56]: >>>> What I noticed some time ago on N810 but not time to fix it that OMAP mux >>>> change dropped muxing audio McBSP pins. Those pins are muxed by reset or >>>> bootloader to another function. >>>> >>>> Probably a few lines to arch/arm/boot/dts/omap2420-n810.dts etc. >>> >>> Hmm do you have a link or commit id to a patch that does the muxing >>> to see which pins need to be muxed? >> >> FWIW I have this at the moment: >> https://pastebin.com/WNT9wnD5 >> >> I see that the card is there, but I'm fighting buildroot to have nfs >> filesystem with aplay :o >> >> There are few things going to be needed to get things in a shape, like >> converting the sound/soc/omap/n810.c to platform driver to be probed via DT. >> Proper bindings for the card, >> support for mclk handling in aic3x codec driver (n810 is hackinig that in the >> machine driver) >> >> In theory audio _should_ work with the DT changes and the fixup in the n810.c... >> >> Should... > > Cool. The pinctrl fixes at least make sense to me, that could be > a separate patch maybe with Fixes: 5a87cde490e1 ("ARM: OMAP2+: Remove > legacy booting support for n8x0") as pointed out by Jarkko. The two GPIO for the headphone and speaker amp might also need pinctrl entry. The clock sys_clkout2 reparenting and rate setting is done with the assigned-clock stuff. As I mentioned the only thing that we will need is the mclk handling in the codec driver. Most likely we could have a series dealing with DT only, then rewrite the n810.c. The only thing might cause issue is that if the aic3x driver starts to handle the sys_clkout2 (mclk) and the n810.c also wants to grab it and control it... That might break along the way. > > Regards, > > Tony > -- Péter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
