Merge series "spi: cadence-quadspi: Add QSPI controller support for Intel LGM SoC...

Add QSPI controller support for Intel LGM SoC.

Patches to move move bindings over to
"Documentation/devicetree/bindings/spi/" directory and also added compatible
Support for Intel platform.

dt-bindings: spi: cadence-qspi: Add support for Intel lgm-qspi
(earlier patch mail thread and Ack-by)
link: "https://lore.kernel.org/lkml/5d6d1b85.1c69fb81.96938.0315@mx.google.com/"

Reference:
        https://lkml.org/lkml/2020/6/1/50
---
v9:
  - Vignesh review comments address and update
  - Retain the patchv4 move the binding documentation from mtd to spi
    directory.
  - Add intel's compatible string over the legacy documentation
  - Remove unused variable, CQSPI_SUPPORTS_MULTI_CHIPSELECT macro and check
  - YAML convertion patch alone dropped
v8:
  - As Mark suggested to add the dt-bindings documentation patches
    end of the series , so dropped.
v7:
  - Rob's review comments address and fixed dt-schema warning
  - Pratyush review comments address and update
  - DAC bit reset to 0 and 1 (enable/disable)
  - tested QSI-NOR flash mx25l12805d on LGM soc, it's working after disable DAC
  - Linus suggested to use 'num-cs' prperty instead of 'num-chipselect'
v6:
  - Rob's review comments update
  - add compatible string in properly aligned
  - remove cadence-qspi extra comaptible string in example
v5:
  - Rob's review comments update
  - const with single compatible string kept
v4:
  - Rob's review comments update
  - remove '|' no formatting to preserve
  - child node attributes follows under 'properties' under '@[0-9a-f]+$'.
v3:
  - Pratyush review comments update
  - CQSPI_SUPPORTS_MULTI_CHIPSELECT macro used instead of cqspi->use_direct_mode
  - disable DAC support placed in end of controller_init
v2:
  - Rob's review comments update for dt-bindings
  - add 'oneOf' for compatible selection
  - drop un-neccessary descriptions
  - add the cdns,is-decoded-cs and cdns,rclk-en properties as schema
  - remove 'allOf' in not required place
  - add AdditionalProperties false
  - add minItems/maxItems for qspi reset attributes

resend-v1:
  - As per Mark's suggestion , reorder the patch series 1-3 driver
    support patches, series 4-6 dt-bindings patches.
v1:
  - initial version

Ramuthevar Vadivel Murugan (5):
  spi: cadence-quadspi: Add QSPI support for Intel LGM SoC
  spi: cadence-quadspi: Disable the DAC for Intel LGM SoC
  spi: cadence-quadspi: Add multi-chipselect support for Intel LGM SoC
  spi: Move cadence-quadspi.txt to Documentation/devicetree/bindings/spi
  dt-bindings: spi: cadence-qspi: Add support for Intel lgm-qspi

 .../bindings/{mtd => spi}/cadence-quadspi.txt      |  1 +
 drivers/spi/Kconfig                                |  2 +-
 drivers/spi/spi-cadence-quadspi.c                  | 24 ++++++++++++++++++----
 3 files changed, 22 insertions(+), 5 deletions(-)
 rename Documentation/devicetree/bindings/{mtd => spi}/cadence-quadspi.txt (97%)

--
2.11.0

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