On 04/27/2017 09:34 PM, Priyanka Jain wrote:
-----Original Message----- From: York Sun [mailto:york.sun@nxp.com] Sent: Thursday, April 27, 2017 10:25 PM To: Priyanka Jain priyanka.jain@nxp.com; u-boot@lists.denx.de Cc: Suresh Gupta suresh.gupta@nxp.com Subject: Re: [u-boot-release] [PATCH 2/2][v5] nxp/ls2080ardb: Add QSPI-boot support
On 04/26/2017 09:56 PM, Priyanka Jain wrote:
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Priyanka,
I understand you don't have access to CPLD. Do you still have access to IFC NOR flash? Can you boot from NOR flash, and issue a cpld command to reboot from QSPI?
York
No, NOR and QSPI are muxed at RCW level. So, IFC is disabled for QSPI-boot. We use QSPI emulator on board or code-warrior to write to on-board QSPI
flash.
Also, for LS2088ARDB, we only have single QSPI flash. So no alternate bank.
What if the user brick the board by trashing QSPI flash? Is JTAG tool the only way to recover? Can QSPI be accessed by booting from other sources?
The single bank QSPI will be a disaster if we cannot recover a bricked board.
York
QSPI can be accessed also by attaching QSPI emulator device on boards. This issue has been resolved in another similar platform LS2081ARDB which has dual QSPI flash. Priyanka
Let's say a customer has this board without QSPI emulator, or CW Tap, is there any way to program QSPI flash if it is bricked?
You have another patch to enable SD for this board. Can this board boot from SD and access QSPI?
York