spi: cadence-qspi: add Mobileye EyeQ5 support

Hi all,

V2 of this series adding octal SPI-NOR support to Mobileye EyeQ5
platform. It has been tested on EyeQ5 hardware successfully.
V1 cover letter [5] contains a brief summary of what gets added.

There is no dependency except if you want zero errors in devicetree:
system-controller series [3] for <&clocks> phandle.

Have a nice day,
Théo

[0]: https://lore.kernel.org/lkml/20240216174227.409400-1-greg...
[1]: https://lore.kernel.org/linux-mips/20240209-regname-v1-0-...
[2]: https://git.kernel.org/pub/scm/linux/kernel/git/mips/linu...
[3]: https://lore.kernel.org/lkml/20240301-mbly-clk-v9-0-cbf06...
[4]: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/s...
[5]: https://lore.kernel.org/lkml/20240308-cdns-qspi-mbly-v1-0...

To: Mark Brown <broonie@kernel.org>
To: Rob Herring <robh+dt@kernel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Vaishnav Achath <vaishnav.a@ti.com>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: Rob Herring <robh@kernel.org>
Cc: linux-spi@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Cc: Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>
Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Tawfik Bayouk <tawfik.bayouk@mobileye.com>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>

Changes in v2:
- Rebase upon v6.9-rc2.
- Fix dt-bindings commit subject tags.
- Take Reviewed-by: Krzysztof Kozlowski on dt-bindings commit.
- Add dt-bindings commit to order compatibles alphabetically.
  adding EyeQ5 compatible can be taken alone easily.
- Drop patch taken upstream:
- Add To: Rob Herring, following get_maintainer.pl recommendation.
- Link to v1: https://lore.kernel.org/r/20240308-cdns-qspi-mbly-v1-0-a5...

Krzysztof: unsure if you want this. It is second so that commit
spi: cadence-qspi: switch from legacy names to modern ones
---
Théo Lebrun (11):
      spi: dt-bindings: cdns,qspi-nor: add mobileye,eyeq5-ospi compatible
      spi: dt-bindings: cdns,qspi-nor: sort compatibles alphabetically
      spi: cadence-qspi: allow building for MIPS
      spi: cadence-qspi: store device data pointer in private struct
      spi: cadence-qspi: add FIFO depth detection quirk
      spi: cadence-qspi: minimise register accesses on each op if !DTR
      spi: cadence-qspi: add no-IRQ mode to indirect reads
      spi: cadence-qspi: add early busywait to cqspi_wait_for_bit()
      spi: cadence-qspi: add mobileye,eyeq5-ospi compatible
      MIPS: mobileye: eyeq5: Add SPI-NOR controller node
      MIPS: mobileye: eyeq5: add octal flash node to eval board DTS

 .../devicetree/bindings/spi/cdns,qspi-nor.yaml     |  19 +++-
 arch/mips/boot/dts/mobileye/eyeq5-epm5.dts         |  15 +++
 arch/mips/boot/dts/mobileye/eyeq5.dtsi             |  15 +++
 drivers/spi/Kconfig                                |   2 +-
 drivers/spi/spi-cadence-quadspi.c                  | 114 ++++++++++++++++-----
 5 files changed, 132 insertions(+), 33 deletions(-)
---
base-commit: afccf1991d034a11ce0a1c21d90feba510838e34
change-id: 20240209-cdns-qspi-mbly-de2205a44ab3

Best regards,
-- 
Théo Lebrun <theo.lebrun@bootlin.com>