On Aug 31, 2016 10:49 PM, "Drew Fustini" <[email protected]> wrote:
>
> Anyone know what determines which number will be used for spidev when
> the BB-SPI1 cape is loaded?
>
> I'm using Debian 8.5 (2016-08-14) image.
>
> BB-SPI1 cape will create /dev/spidev1.x when running 4.1.14-bone17 kernel
>
> -however-
>
> BB-SPI1 cape will create /dev/spidev2.x when running 4.1.15-bone18 kernel
>
> My reason for asking is that I can *not* get fbtft working for TFT LCD
> on SPI1 when using 4.1.15-bone18.  However, fbtft works OK on the
> earlier 4.1.14-bone17 kernel.
>
> Details in this gist:
> https://gist.github.com/pdp7/d2217503b1f8a31ea2215149354f5480
>
>

Try loading spidev via /boot/uEnv.txt, as your dealing with the spi DMA fix
first introduced in bone18

It was later tweaked again in that time frame.

Regards,

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