TDA4VM: TDA4 Startup time optimation

Jiacai Wang said:

Please give us minimal and average reference startup time at Linux OS from TDA4 power on to 2D surrounded stitching view.

This depends on the boot media as well. With a combination of SBL booting Linux from OSPI with file system in eMMC we can get this to as low as 2-3 Seconds to first frame sent out to display. Standard SDK booting from SD with full fledged Linux booting followed by Surround view is around 25 Seconds.

Jiacai Wang said:

1. EMMC supports higher data width, set up higher EMMC clock frequency?

What is the mode/frequency you need?

Jiacai Wang said:

2. LPDDR 4 operation frequency ?

4266 MTS

Jiacai Wang said:

3. Boot mode Pin configuration will impace Boot-up sequence;

Yes OSPI & eMMC are the fastest. SD is slower.

Jiacai Wang said:

POST bypass mode (MCU 8 and MCU 9=0b11: Power on self-test): skip PBIST and LBIS test and reduce 20ms startup time.

Are the PBIST and LBIS necessary for functional safety device?  POST configuation is only used at development phase, not use at mass production phase ?

This is needed for functional safety.

- Keerthy

Hi,Keerthy

     I use sdk7.01,and use sd sbl boot,but I find kernel is load after at least 10s,how can I optimize it .I find  it very slow when copy the kernel image.

Hi,Keerthy,

1, I use sdk7.01,I use sbl boot from sd card,  when  sbl  boot start and  have log, I find copy kernel image is at lease 10s.How can I optimitize it.

2,you say 2-3s  first frame   on which core