Hi Sean
The dw spi devices on the Kendryte K210 must be operated in a specific fasion which cannot be achived through multiple writes to via dw_spi_xfer (as it is currently written). This patch adds an implementation of exec_op, which gives correct behaviour when reading/writing spi flash.
I would like to be able to modify the existing dw_spi_xfer function such that it works properly (e.g. with the mmc_spi driver). However, the only example code I have to work off is Kendryte's sdk (which is written in the exec_op style), and I do not have access to the datasheet (if anyone does, I would love to have a look!).
Signed-off-by: Sean Anderson seanga2@gmail.com
Changes in v4:
- New
drivers/spi/designware_spi.c | 123 +++++++++++++++++++++++++++++++++-- 1 file changed, 119 insertions(+), 4 deletions(-)
Patch 6 and 7 shall be applied via spi tree. You mix them together, the patchwork will become complicated. It will be better for me to wait for a period of time to get the approval(Reviewed-by or Acked-by) of SPI MAINTAINER.
Thanks Rick
So is this just waiting for approval, or is there a change I should make on my end?
If they are not highly dependent, you shall separate and send them individually. But we can wait for few days and see, if it still no response. You can consider separate them.
Thanks Rick
--Sean