topic Re: imx53 LCD data enable problem? in i.MX Processors

imx53 LCD data enable problem?

woutervh — Wed, 23 May 2018 08:14:44 GMT

We have a imx53 board, connected to a TFT-display using the 24-bit parallel interface. But we seem to face an issue.
It worked ok for years having normal content and sporadicaly some video. However, we now wanted to use it as a video networkplayer. So we have it listening to a video multicast for hours. Seems that after a few hours, the screen goes down. Having some further investigations, it seems that all signals are there, but the data-enable signal is completely out of sync, and also sometimes missing. Only a reboot fixes the issue. Sounds familiar to anybody?

Re: imx53 LCD data enable problem?

igorpadykov — Thu, 24 May 2018 12:06:08 GMT

Hi Vanhauwaert

one can test board memory:

Lab and Test Software (1)
DDR Stress tester kit for the i.MX51 and i.MX53(REV 1)

i.MX53 Quick Start Board|NXP

and perform baremetal peripheral tests

On-Board Diagnostic Suit for the i.MX53 Quick Start Board

Best regards
igor
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Re: imx53 LCD data enable problem?

woutervh — Tue, 26 Jun 2018 20:00:47 GMT

Igor, the board is already in the field for years. I doubt there would be some ddr/peripheral issue on it...

Re: imx53 LCD data enable problem?

woutervh — Tue, 26 Jun 2018 20:02:00 GMT

Some further info. It seems like not only the data-ready is messed up... Is there a way I can check the outgoing clocks by registers or whatever?