[PATCH v5 0/6] hw/ssi: imx_spi: Fix various bugs in the imx_spi model

[Bin Meng]

From: Bin Meng <bin.meng@windriver.com>

This series fixes a bunch of bugs in current implementation of the imx
spi controller, including the following issues:

- chip select signal was not lower down when spi controller is disabled
- remove imx_spi_update_irq() in imx_spi_reset()
- round up the tx burst length to be multiple of 8
- transfer incorrect data when the burst length is larger than 32 bit
- spi controller tx and rx fifo endianness is incorrect

Tested with upstream U-Boot v2020.10 (polling mode) and VxWorks 7
(interrupt mode).

Changes in v5:
- rename imx_spi_hard_reset() to imx_spi_soft_reset()
- round up the burst length to be multiple of 8

Changes in v4:
- adujst the patch 2,3 order
- rename imx_spi_soft_reset() to imx_spi_hard_reset() to avoid confusion
- s/normal/common/ in the commit message
- log the burst length value in the log message

Changes in v3:
- new patch: remove imx_spi_update_irq() in imx_spi_reset()
- Move the chip selects disable out of imx_spi_reset()
- new patch: log unimplemented burst length
- Simplify the tx fifo endianness handling

Changes in v2:
- Fix the "Fixes" tag in the commit message
- Use ternary operator as Philippe suggested

Bin Meng (5):
  hw/ssi: imx_spi: Use a macro for number of chip selects supported
  hw/ssi: imx_spi: Remove imx_spi_update_irq() in imx_spi_reset()
  hw/ssi: imx_spi: Round up the burst length to be multiple of 8
  hw/ssi: imx_spi: Correct the burst length > 32 bit transfer logic
  hw/ssi: imx_spi: Correct tx and rx fifo endianness

Xuzhou Cheng (1):
  hw/ssi: imx_spi: Disable chip selects when controller is disabled

 include/hw/ssi/imx_spi.h |  5 ++++-
 hw/ssi/imx_spi.c         | 46 +++++++++++++++++++++++++++++-----------
 2 files changed, 38 insertions(+), 13 deletions(-)

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2.25.1