Part Number:AM5728
Hi,
I have one question regarding AM5728's DSS(Display controller) initialization.
Is this Display subsystem needed some software reset after PORz is de-asserted?
According to i862 "Reset Should Use PORz" of AM5728 silicon Errata, software reset
is not 100% reliable, and SoC may hang during boot after the reset source is de-asserted.
So I think DSS does not need to use software reset after PORz is de-asserted.
But my customer's display driver (this is not Linux based) uses the software reset in its initialization sequence. And customer found this software reset causes abnormal situation(SGX initialization failed). This software reset is executed before SGX initialization sequence. When customer remove the software reset from display driver, the symptom disappeared.
So we would like to confirm whether the DSS needs to issue the software reset in initialization sequence after PORz de-asserted.
Please advise me.
I appreciate your quick reply.
Best regards,
Michi