LS1012A - Quad SPI and Dual SPI Signal generate

[yogeshdave07]

We have ls1012A board having winbond spi flash chip.

With yocto-sdk project, (spi-nor.c) file changes, I am able to generate 1-4-4 (EB) and 1-1-4(6B) Fast Read Commands.

Next I want to generate 4-4-4 QuadSPI commands, but the same spi-nor changes not helping to achieve this ? Can someone guide me the how can I generate other Singale and double data rate 4-4-4 mode signals on ls1012a board.

Thank you

[JosephAtNXP]

Hi,

Thank you for your interest in NXP Semiconductor products,

I think this post may clarify your question.

Regards

[yogeshdave07]

Thanks @JosephAtNXP . This solution is to enable/disable OCTAL mode.

After reading the specification, I come to know that need to issue a 38h Instruction to enable QPI mode to generate 4-4-4 signals.

Can you or someone help here how we can issue 38h instruction ? Can you please guide with steps/commands or kernel side code changes to achieve this ?

Thanks !