[PATCH v2 00/10] spi: dw: Add support for DUAL/QUAD/OCTAL modes

[Sean Anderson]

On 4/2/21 7:05 PM, Sean Anderson wrote:
> This series adds support for enhanced SPI modes. It was tested on a K210 (DWC
> SSI with QSPI flash).
> 
> If anyone has a designware device with QSPI flash attached (especially a DW SSI
> APB device), I'd greatly appreciate them testing out this patch series. Given
> that there has been no testing of v2 over the past month, I don't think lack of
> testing should hold up this series.
> 
> Changes in v3:
> - Dropped merged patches
> - Rebased on u-boot/master
> 
> Changes in v2:
> - Add more information to exec_op debug message
> - Actually mask interrupts
> - Merge CAP_{DUAL,QUAD,OCTAL} into CAP_ENHANCED
> - Fix some inconsistencies in register naming and usage
> - Moved some hunks between commits so things make more sense
> 
> Sean Anderson (10):
>    mtd: spi-mem: Export spi_mem_default_supports_op
>    spi: spi-mem: Add debug message for spi-mem ops
>    spi: dw: Log status register on timeout
>    spi: dw: Actually mask interrupts
>    spi: dw: Switch to capabilities
>    spi: dw: Rewrite poll_transfer logic
>    spi: dw: Add ENHANCED cap
>    spi: dw: Define registers for enhanced mode
>    spi: dw: Support enhanced SPI
>    spi: dw: Support clock stretching
> 
>   drivers/spi/designware_spi.c | 647 ++++++++++++++++++++++++-----------
>   drivers/spi/spi-mem.c        |   7 +
>   include/spi-mem.h            |   3 +
>   3 files changed, 451 insertions(+), 206 deletions(-)
> 

Looks like I forgot to bump the version. This should be v3. I can resend if necessary.

--Sean