search

notro / rpi-firmware

Deprecated: Raspberry Pi kernel and firmware with support for FBTFT
Other
94 stars 32 forks source link

RA8875 support? #7

Closed s-t-cat closed 10 years ago

s-t-cat commented 10 years ago

Cannot find RA8875 promised device using "sudo modprobe fbtft_device name=list". Installed 2014-06-20-wheezy-raspbian-2014-07-25-fbtft-master-firmware, then sudo REPO_URI=https://github.com/notro/rpi-firmware rpi-update. SPI device is unblacklisted. Rasb Pi B+.

Sep 15 22:01:30 raspberrypi kernel: [ 71.931771] fbtft_device: SPI devices registered: Sep 15 22:01:30 raspberrypi kernel: [ 71.931826] fbtft_device: spidev spi0.0 500kHz 8 bits mode=0x00 Sep 15 22:01:30 raspberrypi kernel: [ 71.931842] fbtft_device: spidev spi0.1 500kHz 8 bits mode=0x00 Sep 15 22:01:30 raspberrypi kernel: [ 71.931853] fbtft_device: 'fb' Platform devices registered: Sep 15 22:01:30 raspberrypi kernel: [ 71.931873] fbtft_device: bcm2708_fb id=-1 pdata? no Sep 15 22:01:30 raspberrypi kernel: [ 71.931915] fbtft_device: Supported displays: Sep 15 22:01:30 raspberrypi kernel: [ 71.931925] fbtft_device: adafruit18 Sep 15 22:01:30 raspberrypi kernel: [ 71.931933] fbtft_device: adafruit18_green Sep 15 22:01:30 raspberrypi kernel: [ 71.931941] fbtft_device: adafruit22 Sep 15 22:01:30 raspberrypi kernel: [ 71.931952] fbtft_device: adafruit22a Sep 15 22:01:30 raspberrypi kernel: [ 71.931960] fbtft_device: adafruit13m Sep 15 22:01:30 raspberrypi kernel: [ 71.931969] fbtft_device: er_tftm050_2 Sep 15 22:01:30 raspberrypi kernel: [ 71.931976] fbtft_device: er_tftm070_5 Sep 15 22:01:30 raspberrypi kernel: [ 71.931984] fbtft_device: flexfb Sep 15 22:01:30 raspberrypi kernel: [ 71.931992] fbtft_device: flexpfb Sep 15 22:01:30 raspberrypi kernel: [ 71.932000] fbtft_device: freetronicsoled128 Sep 15 22:01:30 raspberrypi kernel: [ 71.932008] fbtft_device: hx8353d Sep 15 22:01:30 raspberrypi kernel: [ 71.932016] fbtft_device: hy28a Sep 15 22:01:30 raspberrypi kernel: [ 71.932023] fbtft_device: hy28b Sep 15 22:01:30 raspberrypi kernel: [ 71.932031] fbtft_device: itdb24 Sep 15 22:01:30 raspberrypi kernel: [ 71.932038] fbtft_device: itdb28 Sep 15 22:01:30 raspberrypi kernel: [ 71.932046] fbtft_device: itdb28_spi Sep 15 22:01:30 raspberrypi kernel: [ 71.932054] fbtft_device: mi0283qt-2 Sep 15 22:01:30 raspberrypi kernel: [ 71.932062] fbtft_device: mi0283qt-9a Sep 15 22:01:30 raspberrypi kernel: [ 71.932071] fbtft_device: mi0283qt-v2 Sep 15 22:01:30 raspberrypi kernel: [ 71.932080] fbtft_device: nokia3310 Sep 15 22:01:30 raspberrypi kernel: [ 71.932089] fbtft_device: piscreen Sep 15 22:01:30 raspberrypi kernel: [ 71.932097] fbtft_device: pitft Sep 15 22:01:30 raspberrypi kernel: [ 71.932105] fbtft_device: pioled Sep 15 22:01:30 raspberrypi kernel: [ 71.932113] fbtft_device: rpi-display Sep 15 22:01:30 raspberrypi kernel: [ 71.932120] fbtft_device: s6d02a1 Sep 15 22:01:30 raspberrypi kernel: [ 71.932129] fbtft_device: sainsmart18 Sep 15 22:01:30 raspberrypi kernel: [ 71.932137] fbtft_device: sainsmart32 Sep 15 22:01:30 raspberrypi kernel: [ 71.932146] fbtft_device: sainsmart32_fast Sep 15 22:01:30 raspberrypi kernel: [ 71.932154] fbtft_device: sainsmart32_latched Sep 15 22:01:30 raspberrypi kernel: [ 71.932163] fbtft_device: sainsmart32_spi Sep 15 22:01:30 raspberrypi kernel: [ 71.932170] fbtft_device: spidev Sep 15 22:01:30 raspberrypi kernel: [ 71.932178] fbtft_device: ssd1331 Sep 15 22:01:30 raspberrypi kernel: [ 71.932186] fbtft_device: tinylcd35 Sep 15 22:01:30 raspberrypi kernel: [ 71.932195] fbtft_device: tm022hdh26 Sep 15 22:01:30 raspberrypi kernel: [ 71.932204] fbtft_device: upd161704 Sep 15 22:01:30 raspberrypi kernel: [ 71.932212] fbtft_device: waveshare22 Sep 15 22:01:30 raspberrypi kernel: [ 71.932220] fbtft_device:

notro commented 10 years ago

The currently supported RA8875 displays are: er_tftm050_2 and er_tftm070_5 https://github.com/notro/fbtft/commit/71994224c5ed951eab7ca9da2c919456d1632d15

s-t-cat commented 10 years ago

Thank you. it works now with ER-TFTM070-5

fenderrex commented 9 years ago

are those displays supported by the Beaglebone Black?as i have recently moved my embedded project to the bone. Iv been using the er_tftm070_5 display. Sorry i'm new to device tree stuff and was wondering where one could start as well as get documentation on the wiring...

notro commented 9 years ago

They should work on the BBB as well, but I haven't heard of anyone using that display though. If you load an overlay that enables one of the SPI busses and use a gpio that is already muxed as a gpio, you should be able to use fbtft_device to load the device.

For Device Tree: I see that er_tftm070_5 uses SPI_MODE3. Use spi-cpol; and spi-cpha; like this: https://github.com/notro/fbtft/blob/master/dts/rpi.dts#L26 Apart from that look at the er_tftm070_5 entry and the DT overlay example from the BBB page. https://github.com/notro/fbtft/wiki/BeagleBone-Black

er_tftm070_5: https://github.com/notro/fbtft/blob/master/fbtft_device.c#L325

fbtft_device tinylcd: https://github.com/notro/fbtft/blob/master/fbtft_device.c#L906 DT overlay tinylcd: https://gist.github.com/notro/48ec4ed53df6ced661d6

fenderrex commented 9 years ago

Okay just sat down, thank for responding so fast. I am just flying by the seat of my britches here and I am a bit over whelmed. I have installing the fb device down just the commands listed... But telling it to use the er_tftm070_5... let me say what I think I know because I don't think I understand. At https://github.com/notro/fbtft/blob/master/fbtft_device.c#L356 you setup a configuration referencing a config of the ra8875 chip here https://github.com/notro/fbtft/blob/master/fb_ra8875.c as well have the ability to change some of the GPIO? so btft_device.c is the device tree entry point? now that I pointed out any misunderstandings I might have had, this is where I get scared to touch my keyboard. I don't fallow the (LCD controller device) step So I need to build the dts file for the beagle bone black Compile and Enable? what is the lcd@0 class about. I don't get what it means by "entire file https://gist.github.com/notro/48ec4ed53df6ced661d6". I hope I dint overwhelm you. thank you for your help so far

fenderrex commented 9 years ago

^^ might not have been the best place to post this now that i think about it...

notro commented 9 years ago

This is a good start if you don't know DT overlays on the BBB: https://learn.adafruit.com/introduction-to-the-beaglebone-black-device-tree/overview

You have two choices:

  1. Setup the SPI bus using DT overlay (already provided) and use fbtft_device to load the device.
  2. Use DT overlay for both SPI bus and FBTFT device (need to write one)

Here's some info about what this device is: https://github.com/notro/fbtft/wiki/fbtft_device