4DCAPE-43T driver

[abhilash h]

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

[Carl Holzmann]

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

[abhilash h]

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.

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[Robert Nelson]

On Mon, Jan 23, 2017 at 11:23 AM, abhilash h <abhit...@gmail.com> wrote:
> 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.

It's using the tilcd controller found on the am335x

Regards,


--
Robert Nelson
https://rcn-ee.com/

[Robert Nelson]

On Mon, Jan 23, 2017 at 11:32 AM, abhilash h <abhit...@gmail.com> wrote:
> Hi Robert,
>
> Thanks for the reply.
> Is it using tilcdc_panel.c driver ?

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