Hi all, I'm attempting to get a 2.8" TFT LCD https://www.adafruit.com/product/2090 working on my PocketBeagle.
Using https://github.com/jadonk/bb.org-overlays/blob/PB-simplegaming/src/arm/PB-simplegaming.dts as a reference I made https://github.com/AnthonyDiGirolamo/bb.org-overlays/blob/adafruit28/src/arm/PB-SPI1-ADAFRUIT28-TFT.dts Then I updated /boot/uEnv.txt with ###Custom Cape dtb_overlay=/lib/firmware/PB-SPI1-ADAFRUIT28-TFT.dtbo and ran: cd ~/bb.org-overlays ./install.sh On reboot dmesg shows: [ 37.071131] fbtft: module is from the staging directory, the quality is unknown, you have been warned. [ 37.154982] fb_ili9341: module is from the staging directory, the quality is unknown, you have been warned. [ 37.217569] fbtft_of_value: buswidth = 8 [ 37.217602] fbtft_of_value: debug = 1 [ 37.217611] fbtft_of_value: rotate = 0 [ 37.217619] fbtft_of_value: fps = 30 [ 37.217942] fb_ili9341 spi1.0: gpio_request_one('reset-gpios'=27) failed with -16 [ 37.417422] fb_ili9341: probe of spi1.0 failed with error -16 And /dev/fb0 doesn't exist. I then tried: sudo rmmod fbtft_device fb_ili9341 fbtft sudo modprobe fbtft_device name=adafruit28 busnum=1 cs=1 rotate=90 gpios=dc: 65,reset:27 And dmesg reports: [ 541.705866] fbtft: module is from the staging directory, the quality is unknown, you have been warned. [ 541.723630] fbtft_device: module is from the staging directory, the quality is unknown, you have been warned. [ 541.726930] spi spi1.0: ili9341 spi1.0 32000kHz 8 bits mode=0x00 [ 541.726961] spidev spi2.0: spidev spi2.0 24000kHz 8 bits mode=0x00 [ 541.726975] spidev spi2.1: spidev spi2.1 24000kHz 8 bits mode=0x00 [ 541.727716] fbtft_device: GPIOS used by 'adafruit28': [ 541.727731] fbtft_device: 'dc' = GPIO65 [ 541.727738] fbtft_device: 'reset' = GPIO27 [ 541.727754] spi spi1.0: ili9341 spi1.0 32000kHz 8 bits mode=0x00 [ 541.727765] spidev spi2.0: spidev spi2.0 24000kHz 8 bits mode=0x00 [ 541.727776] spidev spi2.1: spidev spi2.1 24000kHz 8 bits mode=0x00 [ 541.727787] spi spi1.1: fb_ili9341 spi1.1 32000kHz 8 bits mode=0x00 [ 541.778825] fb_ili9341: module is from the staging directory, the quality is unknown, you have been warned. [ 541.796831] fbtft_of_value: buswidth = 8 [ 541.796862] fbtft_of_value: debug = 1 [ 541.796871] fbtft_of_value: rotate = 0 [ 541.796879] fbtft_of_value: fps = 30 [ 541.797216] fb_ili9341 spi1.0: gpio_request_one('reset-gpios'=27) failed with -16 [ 541.820918] fb_ili9341: probe of spi1.0 failed with error -16 [ 541.821383] fb_ili9341 spi1.1: fbtft_request_gpios: gpio_request_one('dc' =65) failed with -16 [ 541.842127] fb_ili9341: probe of spi1.1 failed with error -16 Does anyone know what I'm missing? This page https://github.com/notro/fbtft/wiki/BeagleBone-Black#enable-overlay mentions: An unfortunate sideeffect is that capemgr also adds a platform device using > the same DT node as the spi device: > $ ls -l /sys/devices/ocp.3/481a0000.spi/ > total 0 > drwxr-xr-x 3 root root 0 Aug 21 19:18 0.lcd@0 > This is not a problem for regular spi drivers, but the FBTFT drivers does > also support platform devices. This results in the driver probing this > device as well. But the probing fails because the gpio has already been > requested by the spi device. So, not a functional problem, but rather a > cosmetic one with logging of errors in the kernel log that are not actual > errors. But for me there is no /dev/fb0 and I'm not sure what to try next. For reference I'm running: $ uname -a Linux beaglebone 4.4.110-ti-r142 #1 SMP Mon Jan 8 19:06:43 UTC 2018 armv7l GNU/Linux Thanks very much for any help! -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/e8177cc2-9f2f-4459-a6ce-4136ecb3fde1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
