4DCAPE-43T driver

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1

Dear All,
I am using 4D CAPE from 4d system. Which device driver is it using and how it is loaded by the kernel.

Regards,
Abhilash

2

Hi Abhilash,

If you type “cat /sys/devices/platform/bone_capemgr/slots” you will find out what dtbo was loaded by the cape manager (assuming that you have got the dislpay up&running).

For example the result I get:

root@beaglebone:~# uname -a Linux beaglebone 4.4.40-ti-r80 #1 SMP Sat Jan 7 11:36:44 UTC 2017 armv7l GNU/Linux root@beaglebone:~# cat /sys/devices/platform/bone_capemgr/slots 0: P---L- 0 4D 4.3 LCD CAPE- 4DCAPE-43T ,00A1,4D SYSTEMS ,BB-BONE-LCD4-01 1: PF---- -1 2: PF---- -1 3: PF---- -1 root@beaglebone:~#

the beaglebone know which dtbo to load due to the eeprom that is located on the cape.

Hope this answers your question, best regards,
Carl

3

Hi carl,
Thanks for the reply.
I am aware of the dtbo. But i want to know which device drive is loaded. As far i am concerned the lcd uses himax controller. I want to know which driver is used for the lcd display.

4

It's using the tilcd controller found on the am335x

Regards,

5

Sure, that's one part of the tilcdc driver found in mainline..

Regards,