topic Re: SDP vs SDPS: whats the difference ..? in i.MX Processors

SDP vs SDPS: whats the difference ..?

dry — Wed, 07 Sep 2022 03:41:22 GMT

Cannot see any reference in iMX8 UG to SDPS, SDP still there.

What is the actual difference ..?

UUU help traces/messages are kind of cryptic on this:

What is "stream download.." here ..? Is "boot" the only command supported here ..?

Where does SDPS come from?

joanxie — Fri, 09 Sep 2022 05:12:09 GMT

refer to the uuu document

Support SDP protocol (i.MX6x, i.MX7, i.MX8M, i.MX8MM)
Support SDPS protocol (i.MX8QXP B0, i.MX8QM B0)

dry — Fri, 09 Sep 2022 10:55:04 GMT

Thank you for replying, but:

Support SDP protocol (i.MX6x, i.MX7, i.MX8M, i.MX8MM)
Support SDPS protocol (i.MX8QXP B0, i.MX8QM B0)

What does this say about how the protocols differ .. ? Is the difference only that the Same protocol is called SDPS on iMX8 ?

Why I do not see any SDPS reference in the User Guide for iMX8 ? There is still SDP I see.

Is SDPS a UUU variant of SDP ..?

joanxie — Mon, 12 Sep 2022 10:42:12 GMT

in the uuu script, you can find

# This command will be run when i.MX6/7 i.MX8MM, i.MX8MQ
SDP: boot -f _flash.bin

# This command will be run when ROM support stream mode
# i.MX8QXP, i.MX8QM
SDPS: boot -f _flash.bin

dry — Tue, 13 Sep 2022 10:56:31 GMT

Thank you,

seems like they identical, perhaps some fix in uuu was done for difference in SDS between the ROM code of the respective SOCs ... Speculating.