topic Re: JTAG board bring up in i.MX Processors

JTAG board bring up

peterpaquette — Wed, 22 Feb 2017 19:30:23 GMT

Basic Info

Custom board design based on NXP MCIMX6Q-Smart Device Board (Schematic # SPF-27516_C5)
Kernel version and/or BSP release used
1. MFGTool2 L4.1.15_2.0.0
2. BSP - 2.1 Krogoth
3. Uboot - v2016.07+gitAUTOINC+e6b42411ab-r0
4. DDR_Stress_Tester_V1.0.3_UART1
5. MX6Q_MMDC_LPDDR2_Register_Programming_Aid_V1.3.xlsx

Any additional software/application or hardware used

Segger JLink Pro using JLink V612i FW Rev 4.0 for gdb server
1. JLinkGDBServerCL -device MCIMX6Q7 -speed 1000
2. See jlink_gdbserver_log.txt

MX6Q_MMDC_LPDDR2_Register_Programming_Aid_V1.3.xlsx

Device Information
Memory type:	LPDDR2
Manufacturer:	Micron - POP Package
Memory part number:	MT42L256M32D2LG-18 WTA
Density per chip select (Gb):	4
Number of Chip Selects per channel used²	2
Number of Channels used²	2
DRAM density per channel (Gb)	8
Total DRAM density (Gb)	16
Number of ROW Addresses²	14
Number of COLUMN Addresses²	10
Number of BANKS²	8
Bus Width (input 16, 32, or 64 bits)²	32
Clock Cycle Freq (MHz)³	533
Clock Cycle Time (ns)	1.876

GNU Arm Embedded Toolchain 6-2016-q4-major (arm-non-eabi-gdb.exe) for gdb client
1. arm-non-eabi-gdb -ix ddr-config.gdbinit
2. See gdb_log.txt

Hardware or software changes made from standard platform
1. 2 x 1GB LPDDR2 Micron Ram (as shown above)
2. No USB OTG port available (working on getting it red-wired out)
3. JTAG - fully available and seems to be working (JMem works as well as JLink Commander)
4. PMIC fully tested and working
5. Hardware Development Guide for IMX6Q
  1. Followed all design checklist tables
  2. Followed ch8 board bring-up
    1. All power rails OK and stable + sequence
    2. All clocks checked
6. Boot mode (01) - Serial downloader
7. Debug UART1 (Serial -> USB) -> COM PORT 8 -> PUTTY running 115200, 8 data, 1 stop, No parity, No flow control
Expected and observed behavior
1. Read/write/verify to internal RAM 0x00907000 via JTAG OK
2. Try to initialize DDR via gdbinit using programming aid outputs = FAILURE
  1. Load ddr-stress-test-mx6dq.elf
    1. Doesn't seem to run
    2. No output on serial UART
Steps to reproduce (See above)
Frequency of reproducibility = always
Display type and resolution = N/A

A> Is there a way to simply test the Debug UART alone to see if it works? - We are working on doing a boundary scan to make sure this and other pins are connected/not shorted.

B> Can we get a write up of logical steps or validation that this should work using JTAG only?

C> Is there a document/diagram that shows all the connections and signals needed for USB OTG needed to do serial download?

D> Anything else we can check?

E> Everything always references - check with your local FAE? How do we get one?

Original Attachment has been moved to: ddr-config.gdbinit.zip

Original Attachment has been moved to: jlink_gdbserver_log.txt.zip

Original Attachment has been moved to: gdb_log.txt.zip

Re: JTAG board bring up

igorpadykov — Thu, 23 Feb 2017 06:54:14 GMT

Hi Peter

- with boundary scan one can toggle pad, for testing uart

it is necessary to run some program using jtag debugger, please

check attached sdk example. Full sdk can be provided using service request.

How to create service request :
https://community.freescale.com/docs/DOC-329745

- for validation one can use sdk it has tests for many modules

- for serial download one can check MCIMX6Q-Smart Device Board schematic

and Boot Chapter of Reference Manual

- please refer to i.MX6 System Development User’s Guide
http://cache.freescale.com/files/32bit/doc/user_guide/IMX6DQ6SDLHDG.pdf

- one can create service request or use Live Chat [in section SUPPORT]
http://www.nxp.com/support/sales-and-support:SUPPORTHOME

Best regards
igor
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Re: JTAG board bring up

peterpaquette — Thu, 23 Feb 2017 22:23:26 GMT

Igor,

Update:

- We ran boundary scan and tested our UART1 TX and RX pins - everything works / is connected / not shorted

- USB OTG will not enumerate in windows - we can't boundary scan D+/D- because they are listed as linkage in BSDL - we simplified this connection based on the schematic in MCIMX6Q Smart device board - are any of the N/C a problem?

- We will request the SDK through support and possibly initiate a Live Chat/support session.