Linux/DRA74: In the uboot and linux kernel source code provided by the DRA74x Linux SDK, is the DRA74x LCD driver source code included?

liangqiang fang

Part Number: DRA74

Tool/software: Linux

Hi，TI Team

We are now developing our own products with the DRA745 chip. When the Linux sdk development package downloaded from the TI official website was compiled, it was found that the corresponding fb device was not generated. So I would like to ask, the uboot and linux source code provided in sdk, whether there is a driver source code for the LCD containing DRA745, which option is to be configured corresponding to the Display Subsystem of DRA745.

Regards

Fang

over 7 years ago

0 Yordan Kamenov over 7 years ago

TI__Mastermind 42515 points

Hi Fang,

you need to select right .dtb file for your board, please check this wiki:
processors.wiki.ti.com/index.php

Regards,
Yordan

0 liangqiang fang over 7 years ago in reply to Yordan Kamenov

Prodigy 70 points

Hi Yordan,

Our board design is: connect the J6 VOUT1 to the DS90C189, then the DS90C189 is connected to the LCD. I don't know which .dtb file is correct. I have selected the .dtb file but it does not work. My question is whether there is a source code for the DAR74x display driver in sdk, or I need to re-port it.

My uenv.txt content is as follows:

args_mmc=part uuid mmc 0:2 uuid; setenv bootargs "console=ttyO0,115200n8 elevator=noop root=PARTUUID=${uuid} rw rootwait earlyprintk fixrtc omapdrm.num_crtc=2 consoleblank=0 cma=128M@0xB0000000 rootfstype=ext4 snd.slots_reserved=1,1 fdtfile=dra7-evm-lcd-lg.dtb"

Regards,

Fang

0 Subhajit Paul over 7 years ago in reply to liangqiang fang

TI__Expert 7015 points

Fang,

DSCxx is a FPDLink serializer device. Is your LCD connected over FPDLINK?

Default TI SDKs do not support drivers to drive FPDLink displays.

- Subhajit

0 Subhajit Paul over 7 years ago in reply to Subhajit Paul

TI__Expert 7015 points

Fang,

I am closing this thread.

- Subhajit

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Linux/DRA74: In the uboot and linux kernel source code provided by the DRA74x Linux SDK, is the DRA74x LCD driver source code included?