AM335x : Reading the ADC channels causes the Touch driver to stop working

WTMEC_Will Hsu

Other Parts Discussed in Thread: AM3358, TMDXEVM3358

Hi TI Team,
Reading the ADC channels causes the Touch driver to stop working and cannot recover unless there is power cycle.

I found the patch of SDK7, but I use SDK1.
Could you provide the patch of SDK1 for me?
Thanks~

SDK7 Patch from TI E2E Community
http://e2e.ti.com/support/arm/sitara_arm/f/791/p/319613/1299710#1299710

My test condition:

Hardware: General Purpose EVM (AM3358 - TMDXEVM3358)
SDK: v01.00.00 Processor SDK

From Will Hsu

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi,

Please refer to the wiki: http://processors.wiki.ti.com/index.php/Processor_SDK_Linux_ADC Make sure your ADC is configured properly.

0 WTMEC_Will Hsu over 10 years ago in reply to Biser Gatchev-XID

Expert 2620 points

Hi Biser,
Thanks for youe reply.
I used the pre-build image SDK6 and SDK1 on TMDXEVM3358.

When I uesd pre-build image of SDK1, Reading the ADC channels causes the touch screen to stop working.

When I uesd pre-build image of SDK6, the ADC channels and the touch screen are working fine.

Could you provide any patch for SDK1?

Thanks a lot.

0 Biser Gatchev-XID over 10 years ago in reply to WTMEC_Will Hsu

TI__Guru**** 393215 points

I will ask the SW team to check this.

0 Brad Griffis over 10 years ago

TI__Guru*** 125430 points

will hsu90429 said:

I found the patch of SDK7, but I use SDK1.
Could you provide the patch of SDK1 for me?
Thanks~

SDK7 Patch from TI E2E Community
http://e2e.ti.com/support/arm/sitara_arm/f/791/p/319613/1299710#1299710

This is already integrated into Processor SDK 1.00. Perhaps you've not set things up correctly. What does your dts configuration for the TSC-ADC look like?

0 WTMEC_Will Hsu over 10 years ago in reply to Brad Griffis

Expert 2620 points

Hi Brad,
Thanks for your reply.
You are right.
The problem only happens with "QT Deform".

Thanks a lot.

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AM335x : Reading the ADC channels causes the Touch driver to stop working