[PATCH v2 0/5] sunxi: A523: Add SPI support

[Andre Przywara]

Version 2 of this SPI support series just fixes the pinmux refactoring to
sort the sun5i generation correctly, plus adding the tags thanks to the
diligent review from Jernej, many thanks for that!

======================
This series adds SPI support to the A523 family of SoCs. The SPI
controller is very similar to the previous generation, to a degree where
we don't need actual code changes, but just to add the new DT compatible
string to the driver (patch 1/5).
Patch 3/5 adds support for SPL SPI booting, again no real driver changes,
just adding the required pinmux settings for the A523. To make this
easier, patch 2/5 reworks the SPI pinmux setting. That doesn't look as
pretty as I hoped for, but is still better than what we have now.
The last two patches enable SPI and SPI booting on two boards with NOR
flash. 

I could successfully boot U-Boot from SPI on the Radxa A5E with that.
The OrangePi 4A also has a NOR SPI, but I couldn't test this, as I don't
have that board.

Please have a look and test!

Cheers,
Andre

Changelog v1 .. v2:
- fix sun5i pinmux assignment
- add Reviewed-by: tags

Andre Przywara (5):
  spi: sunxi: add support for A523 SPI controller
  sunxi: spl: spi: Clean up SPI0 pinmux setting
  sunxi: spl: spi: Add support for Allwinner A523
  sunxi: configs: Radxa Cubie A5E: enable SPI
  sunxi: configs: OrangePi 4A: enable SPI

 arch/arm/mach-sunxi/spl_spi_sunxi.c | 48 +++++++++++++----------------
 configs/orangepi_4a_defconfig       |  4 +++
 configs/radxa-cubie-a5e_defconfig   |  6 +++-
 drivers/spi/spi-sunxi.c             |  4 +++
 4 files changed, 35 insertions(+), 27 deletions(-)

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2.46.4