This Flash Controller is derived by adding an SPI path to the original
raw NAND controller. This controller supports two modes: raw mode and
SPI mode. The raw mode has already been implemented in the community
(drivers/mtd/nand/raw/meson_nand.c).
This submission supports the SPI mode.

Add the drivers and bindings corresponding to the SPI Flash Controller.

Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
---
Changes in v6:
- Fix compilation warning appeared in v4 version tested by kernel test robot.
- Link to v5: https://lore.kernel.org/r/20250909-spifc-v5-0-962bc147d17f@amlogic.com (local)

Changes in v5:
- Initialize local variables and handle exceptions solve compilation error problems.
- Link to v4: https://lore.kernel.org/r/20250829-spifc-v4-0-1e57fd39f584@amlogic.com (local)

Changes in v4:
- Reword desc of 'amlogic, rx-adj' in bingding file.
- Link to v3: https://lore.kernel.org/r/20250826-spifc-v3-0-7e926041d7f6@amlogic.com (local)

Changes in v3:
- Restore message description and modify subject [1/3] that was omitted in v2. 
- Link to v2: https://lore.kernel.org/r/20250821-spifc-v2-0-b119f64b5c09@amlogic.com (local)

Changes in v2:
- Remove clock reg descriptor and get clock from common clk.
- Remove ecc and ramdom descriptor in bindings.
- Modify the format and message description.
- Link to v1: https://lore.kernel.org/r/20250808-spifc-v1-0-ff4e30e26a6b@amlogic.com (local)

---
Feng Chen (2):
      spi: dt-bindings: add Amlogic A113L2 SFC
      spi: amlogic: add driver for Amlogic SPI Flash Controller

Xianwei Zhao (1):
      MAINTAINERS: Add an entry for Amlogic spifc driver

 .../devicetree/bindings/spi/amlogic,a4-spifc.yaml  |   82 ++
 MAINTAINERS                                        |   10 +
 drivers/spi/Kconfig                                |   10 +
 drivers/spi/Makefile                               |    1 +
 drivers/spi/spi-amlogic-spifc-a4.c                 | 1222 ++++++++++++++++++++
 5 files changed, 1325 insertions(+)
---
base-commit: 475541d2f3dfe72e8cfe94bfb1b824030f8d9b68
change-id: 20250804-spifc-5761e35fbe1f

Best regards,
-- 
Xianwei Zhao [off-list ref]