Re: [RFC] Accessing QSPI device under mtd

[Vignesh Raghavendra <vigneshr@xxxxxx>]

Hi,

On 10/30/20 1:17 AM, Dinh Nguyen wrote:
> Hi,
> 
> With commit "a314f6367787ee mtd: spi-nor: Convert cadence-quadspi to use
> spi-mem framework", I can no longer access the QSPI device under
> /dev/mtd<n> on the Intel Stratix10 and Agilex platforms and is breaking
> a few tests we have in-house.
> 
> Can someone point me to how to access the QSPI device using the spi-mem
> framework?
> 

There is should be no visible change to userspace. /dev/mtdX devices
should still get created based on cmdline or ofpart.

Could you elaborate what fails? Is the flash detected and /dev/mtdX
devices created? Is the issue with read or write or erase?

Also what is the kernel version and .config being used? Full bootlog +
testcase that fails would be helpful.

Regards
Vignesh