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Linux/AM5728: LCD2 not working

Part Number: AM5728
Other Parts Discussed in Thread: AM5718

Tool/software: Linux

Hi,

I want to use LCD2 to display,My SDK is 3.0.0.4.

I see the https://e2e.ti.com/support/arm/sitara_arm/f/791/t/494329 

I doubt that it is still break in my SDK.when I use LCD2 to display , the kernel print :

[ 3.517929] omapdrm omapdrm.0: lcd2: timeout waiting for enable
[ 3.767938] omapdrm omapdrm.0: atomic complete timeout (pipe 1)!

but LCD1 and LCD3 is work well.

I want get the patch .Please help me .Thanks.