AM5728: AM5728

Vishal Maheshwari

Part Number: AM5728

Hi, Could anyone provide guidelines to integrate omap4-keypad driver with am5728 soc based custom board for KBD interface? What am5728 specific changes do I need to do in order to port the driver ?

Thanks!!

over 3 years ago

0 KB over 3 years ago

TI__Guru* 94091 points

Hi Vishal,

As mentioned in this thread (+) AM5728: Keyboard Controller driver - Processors forum - Processors - TI E2E support forums, the keypad driver is not something supported in the SDK.

There is a related thread (+) Linux/AM5728: Keypad driver not working - Processors forum - Processors - TI E2E support forums, which may help.

Regards,

0 Vishal Maheshwari over 3 years ago in reply to KB

Intellectual 740 points

Hi, can you share the link for the reference manual of the keyboard controller whose driver code is defined in omap4-keypad.c file in the linux_source_code/drivers/input/keyboard/ directory?

Thanks!

0 KB over 3 years ago in reply to Vishal Maheshwari

TI__Guru* 94091 points

Hi Vishal,

Please reference below link.

(+) example code to setup and use keypad on 4460 - OMAP 4 Forum (Read-Only Archive) - OMAP Applications Processors (Read Only) - TI E2E support forums

Regards,

0 Vishal Maheshwari over 3 years ago in reply to KB

Intellectual 740 points

I saw the links. They seem useful. I just wanted to know if I have a custom board with 1 row by 4 columns matrix keypad. How would I define the dts file for that keypad ?! I mean i would write rows and columns to be 1 and 4 respectively but what about keymap ?

0 KB over 3 years ago in reply to Vishal Maheshwari

TI__Guru* 94091 points

Hi Vishal,

The AM572x Sitara Processor Technical Reference Manual, "Section 28: Keypad Controller" goes over the keypad module.

The information there used with the previously provided threads would need to referenced to determine modifications to the omap4-keypad.c source file.

Regards,