[PATCH v5 0/4] i2c: add support for Andes platform

This patch series adds I2C support to Andes platform, such as AE350 and
QiLai SoC.

Signed-off-by: Ben Zong-You Xie <[email protected]>
---
Changes in v5:
- Rebased on andi.shyti/i2c/i2c-host-next. No logical changes.
- Link to v4: https://patch.msgid.link/[email protected]

Changes in v4:
- Rebased on andi.shyti/i2c/i2c-host-next.
- (1/4)
  - Added Conor's acked by tag.

- Link to v3: https://patch.msgid.link/[email protected]

Changes in v3:
- (1/4)
  - Rewrote the commit message to provide a detailed hardware
    description and explain the relationship between the ATCIIC100 IP,
    the AE350 platform, and the QiLai SoC. (Krzysztof)

- Link to v2: https://patch.msgid.link/[email protected]

Changes in v2:
- ATCIIC100 is the hardware name for the Andes I2C controller and was used
  throughout v1. However, since Device Tree bindings should reflect the hardware
  identity and driver/config naming typically follows the i2c-<soc/platform>
  convention, this version replaces occurrences of "atciic100" with more
  appropriate names, such as "i2c-andes" or "andes_i2c," to align with upstream
  standards.
- Updated cover letter title and the description.
- Rebased on andi.shyti/i2c/i2c-host-next.
- (1/4)
  - Updated the title and the description of the patch.
  - Specified what the hardware is, and modify the title and compatibles. (Krzysztof)
  - Corrected device register size.
- (2/4)
  - Updated the title and the description of the patch.
  - Replaced the readl/writel operations with regmap APIs.
  - Replaced all occurrences of atciic100 with proper names.
  - Used module_platform_driver() to initialize. (Andi)
  - Moved CONFIG_I2C_ANDES (CONFIG_I2C_ATCIIC100 in v1) to the
    "Embedded system I2C/SMBus host controller drivers" section.
  - Made CONFIG_I2C_ANDES depend on ARCH_ANDES
- (3/4) (new)
  - Added an entry to the MAINTAINERS file.
- (4/4) (new)
  - Added the I2C node to QiLai DTS.

- Link to v1: https://patch.msgid.link/[email protected]

---
Ben Zong-You Xie (4):
      dt-bindings: i2c: add support for AE350 I2C controller
      i2c: add Andes I2C driver support
      MAINTAINERS: add an entry for Andes I2C driver
      riscv: dts: andes: qilai: add I2C controller

 .../bindings/i2c/andestech,ae350-i2c.yaml          |  45 +++
 MAINTAINERS                                        |   6 +
 arch/riscv/boot/dts/andes/qilai.dtsi               |   7 +
 drivers/i2c/busses/Kconfig                         |  10 +
 drivers/i2c/busses/Makefile                        |   1 +
 drivers/i2c/busses/i2c-andes.c                     | 341 +++++++++++++++++++++
 6 files changed, 410 insertions(+)
---
base-commit: 04e9bf1648f846976b543e91c1838a712433772a
change-id: 20260120-atciic100-da3ec68f7bb4

Best regards,
--  
Ben Zong-You Xie <[email protected]>