• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 98 subscribers
  • Views 498 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AM625: SPI NAND support

Tony Tang
Mastermind 28972 points
Part Number: AM625

#1. Why not support QSPI NAND boot? 

Actually I saw many discussion about it for long time, it should be supported already, especially in this thread:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1286328/am625-spi-nand-on-qspi-not-working-in-u-boot

#2. Is the NAND (1-bit mode) corresponding to SPI/1-1-1 mode in TRM?

Did not see such information in SDK user guide. 

#.3. Is GD5F1GQ5UEYIGR supported for boot device? can it work in either 1 wire or 4 wire mode?

https://www.gigadevice.com/product/flash/product-series/spi-nand-flash/gd5f1gq5ue

GD5F1GQ5UExxG-Rev1.5.pdf

  • 0
    TI__Guru 68420 points

    1/. OSPI and QSPI are supported in ROM and u-boot/kernel in general
    2/. yes.
    3/. refer to the internal JIRA ticket jira.itg.ti.com/.../K3ROM-7923
    "Serial NAND doesn’t have a JEDEC standard which specify the memory configuration and modes.
    For example, for serial NAND from Winbond, Micron…, QE bit is not used for 4S mode. On the other hand, QE bit is used for 4S mode in serial NAND device vendors, i.e. Gigadevice, Toshiba/Kioxia, Macronix, Longsys…

    One of option we're exploring is configuring BOOTMODE pin to start with 1S-1S-1S for ROM to load "tiboot3.bin" from Serial NAND, and re-configure in u-boot SW for 4S mode etc..."

    Please keep the JIRA ticket (K3ROM-7923) content for internal reference ONLY.
    Best,
    -Hong

  • 0 in reply to Hong Guan64
    TI__Mastermind 28972 points

    Hi Hong,

    No worry, I can't see this Jira ticket also.

    Is there other limitation on QSPI NAND flash supporting? such as frequency limitation?

  • 0 in reply to Tony Tang
    TI__Guru 68420 points

    Hi Tony,
    Per our offline conversation, I've shared one e2e for some details on the topic for your reference.
    Let's catch up offline for any further questions.
    Best,
    -Hong