[PATCH v5 0/2] spi: dw: DW SPI DMA Driver updates

[Joy Chakraborty <joychakr@google.com>]

This Patch series adds support for 32 bits per word trasfers using DMA
and some defensive checks around dma controller capabilities.
---
V1 Changes : Add support for AxSize=4 bytes to support 32bits/word.
---
V1->V2 Changes : Add dma capability check to make sure address widths
are supported.
---
V2->V3 Changes : Split changes , add DMA direction check and other
cosmetic chnages.
---
V3->V4 Changes : Fix Sparce Warning
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303270715.w9sMJhIh-lkp@intel.com/
---
V4->V5 Changes : Preserve reverse xmas Tree order, move direction
check before initalisation of further capabilities, remove zero
initialisations, remove error OR'ing.
---

Joy Chakraborty (2):
  spi: dw: Add 32 bpw support to DW DMA Controller
  spi: dw: Add dma controller capability checks

 drivers/spi/spi-dw-dma.c | 70 ++++++++++++++++++++++++++++++++--------
 drivers/spi/spi-dw.h     |  1 +
 2 files changed, 57 insertions(+), 14 deletions(-)

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2.40.0.423.gd6c402a77b-goog