topic Identify i.MX6 ULL variants via software in i.MX Processors

Identify i.MX6 ULL variants via software

lategoodbye — Mon, 15 Jan 2018 07:32:39 GMT

According to the i.MX6 ULL Application Processor Data Sheet (chapter Ordering information) there are several variants of this processor available. Those could be identified by a part differentiator.

So my question, is there some kind of register to identify those variants via software?

Re: Identify i.MX6 ULL variants via software

joanxie — Wed, 17 Jan 2018 06:40:36 GMT

try to find the chapter 57.4.11 Chip Silicon Version (USB_ANALOG_DIGPROG) of imx6ull Reference Manual

https://www.nxp.com/docs/en/reference-manual/IMX6ULLRM.pdf

Re: Identify i.MX6 ULL variants via software

lategoodbye — Wed, 17 Jan 2018 08:44:58 GMT

Hi Joan,

i don't need chip silicon version (Part A in part number nomenclature), but the part differentator (Part @) in order to know:

How many PWM/CAN/UART/SPI/... interfaces are supported?

Thanks

Stefan

Re: Identify i.MX6 ULL variants via software

joanxie — Fri, 02 Mar 2018 02:58:39 GMT

for the interface, you need to refer to the data sheet, different imx6ull chip should have different interface.

Re: Identify i.MX6 ULL variants via software

lategoodbye — Wed, 14 Mar 2018 06:45:51 GMT

Hi Joan,

you didn't get my intension. For example i want to write a production program which identifies the capabilities of the running processor. I guess these information are hidden in the OTP register.

Stefan

Re: Identify i.MX6 ULL variants via software

evgenyboger — Thu, 05 Apr 2018 09:48:37 GMT

Turns out, manufacturer bootloader already does the job for you by identifying fused out peripherals and disabling them in Linux devicetree.

Here are the related parts of source code:

uboot-imx.git - Freescale i.MX u-boot Tree

For some weird reason NXP won't openly share the OTP capability fuse table though it's available in the u-boot source cited above.