[U-Boot] [PATCH v2 2/2] mtd: add altera quadspi driver

Thomas Chou thomas at wytron.com.tw
Thu Nov 5 15:45:17 CET 2015


Hi Jagan,

On 2015年11月05日 22:25, Jagan Teki wrote:
> On 5 November 2015 at 14:17, Thomas Chou <thomas at wytron.com.tw> wrote:
>> Add Altera Generic Quad SPI Controller support. The controller
>> converts SPI NOR flash to parallel flash interface. So it is
>> not like other SPI flash, but rather like CFI flash.
>
> Can you wait till spi-nor ready? it doesn't make sense to have Serial
> NOR to created as parallel NOR.

The altera quad spi core is very special that the hardware handle the 
spi-nor protocol. The core is designed to replace the CFI flash 
interface. So there is nothing to do with SPI from the parallel flash 
interface. It is memory mapped. There is no SPI interface. There is 
nothing related to SPI programming. So please don't worry about the 
progress on spi-nor. The core should belong to parallel flash, but not 
serial flash.

Best regards,
Thomas


More information about the U-Boot mailing list