What are the addresses for coresight components (ETB, PTM) for i.MX6 Quad?

[dariussuciu]

I am trying to collect cpu (Cortex A-9) trace data using the coresight components (Program Trace Macrocell and Embedded Trace Buffer). There is a linux driver in place starting from linux 4.1. However I could not find anywhere the physical addresses for these components, for this board. (For i.MX 53, there is a system map listed in the  i.MX 53Multimedia Processor Reference Manual, which describes these adresses. Does anybody know where this system map is listed for i.MX6 processors ? Or the device tree entries needed for i.MX6 ( nitrogen_max) boards by the coresight driver?

[igorpadykov · Accepted solution]

Hi Darius

please check Table 2-4. DAP memory map i.MX6DQ Reference Manual

http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6DQRM.pdf

Best regards
igor
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[michalkurek]

Hello,

table 2-4 contains all DAP memory addresses, however I cannot find any Device Tree for iMX6 platform containing coresight entries. I guess without proper DT, coresight drivers will not startup on the Linux 4.1.x. 

So my question is, how can I get it working on imx6q?

regards,

Michal