very interesting. after removing the eDMA fix and recompiling we still
cant load the audio cape

sudo cat /sys/kernel/debug/pinctrl/44e10800.pinmux/pinmux-pins

stuff removed for clarity


pin 82 (44e10948.0): 4a101000.mdio (GPIO UNCLAIMED) function
davinci_mdio_default group davinci_mdio_default
pin 83 (44e1094c.0): 4a101000.mdio (GPIO UNCLAIMED) function
davinci_mdio_default group davinci_mdio_default


I think this is the reason.



On 4/20/2016 1:55 PM, Robert Nelson wrote:
>
>
> On Wed, Apr 20, 2016 at 3:45 PM, evilwulfie <[email protected]
> <mailto:[email protected]>> wrote:
>
>     I see that on 4.1.14-bone-rt-r17 kernel the edma fix is compiled into
>     the am335x-boneblack-emmc-overlay.dtb resulting in
>     any audio cape overlay not loading.
>
>     so i guess i can grab this file
>     
> https://github.com/beagleboard/linux/blob/4.1/arch/arm/boot/dts/am335x-boneblack-emmc-overlay.dts
>
>     but i have no idea how to complie it and what paths i need to
>     include to
>     get it to complie
>
>
> it's easy, there is a whole repo setup to just do that..
>
> git clone -b 4.1.x https://github.com/RobertCNelson/dtb-rebuilder
> cd ./dtb-rebuilder/
>
> make/sudo make install/etc...
>
>     I am wondering why that *fix* was needed and why it wants to
>     enable the
>     davinci_mdio_default pins so we cant enable audio overlays
>
>
> oh it's been discussed on this list before, there was a specific case
> it needed to be enabled by default to fix a case..
>
> and the "fix" was pushed to the repo, before we got the that audio cape.
>
> Regards,
>
> -- 
> Robert Nelson
> https://rcn-ee.com/
> -- 
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