On Wed, Apr 11, 2018 at 8:39 PM, <smith.winston....@gmail.com> wrote:
> On Sunday, April 8, 2018 at 1:03:57 PM UTC-4, RobertCNelson wrote:
>>
>> Ah, you found a fun bug in the old path.. I'll fix it up for the next
>> person, but you can go down the new path with your setup...
>>
>> [snip...]
>>
>> in /boot/uEnv.txt
>>
>> remove your: dtb=am335x-boneblack-emmc-overlay.dtb
>>
>> Then set:
>>
>> enable_uboot_overlays=1
>> disable_uboot_overlay_video=1
>
>
> Making this change solved it. I updated my bb_ble_image.sh script to add
> --enable-uboot-cape-overlays and move from --dtb beaglebone-nohdmi to --dtb
> beagblebone. However, I couldn't see a way when invoking setup_sdcard.sh to
> set disable_uboot_overlay_video=1 in uEnv.txt via the command line. So I
> made the following change to add a custom --disable-uboot-overlay-video
> option to setup_sdcard.sh (which temporarily helps me out in this case!):
>
> diff --git a/tools/setup_sdcard.sh b/tools/setup_sdcard.sh
> index 9d86f92..b9de76e 100755
> --- a/tools/setup_sdcard.sh
> +++ b/tools/setup_sdcard.sh
> @@ -1266,7 +1266,11 @@ populate_rootfs () {
> echo "###" >> ${wfile}
> echo "###Disable auto loading of virtual capes
> (emmc/video/wireless/adc)" >> ${wfile}
> echo "#disable_uboot_overlay_emmc=1" >> ${wfile}
> - echo "#disable_uboot_overlay_video=1" >> ${wfile}
> + if [ "x${uboot_overlay_video}" = "xdisable" ] ; then
> + echo "disable_uboot_overlay_video=1" >>
> ${wfile}
> + else
> + echo "#disable_uboot_overlay_video=1" >>
> ${wfile}
> + fi
> echo "#disable_uboot_overlay_audio=1" >> ${wfile}
> echo "#disable_uboot_overlay_wireless=1" >> ${wfile}
> echo "disable_uboot_overlay_adc=1" >> ${wfile}
> @@ -2041,6 +2045,9 @@ while [ ! -z "$1" ] ; do
> --enable-uboot-pru-rproc-414ti)
> uboot_pru_rproc_414ti="enable"
> ;;
> + --disable-uboot-overlay-video)
> + uboot_overlay_video="disable"
> + ;;
> --efi)
> uboot_efi_mode="enable"
> ;;
>
> With this I now have an eMMC flasher image that creates the correct
> /boot/uEnv.txt after flashing.
>
> Please let me know if there is a better way to disable video (I just need a
> cmd line option vs whitelisting), there are other options that you might
> want to control (e.g. audio, adc etc) so maybe a more generalized version of
> this would be a nice enhancement.
Yeah, let's do that, can you share your tree/patch, i'll merge that
and add the adc disable option too..
Regards,
--
Robert Nelson
https://rcn-ee.com/
--
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