linux-kernel - [PATCH v2 0/4] i2c: add support for Andes platform

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Message-Id: <20260122-atciic100-v2-0-7559136d07cf@andestech.com>
Date: Thu, 22 Jan 2026 11:53:17 +0800
From: Ben Zong-You Xie via B4 Relay <devnull+ben717.andestech.com@...nel.org>
To: Andi Shyti <andi.shyti@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Paul Walmsley <pjw@...nel.org>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
 Alexandre Ghiti <alex@...ti.fr>
Cc: linux-i2c@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, 
 Ben Zong-You Xie <ben717@...estech.com>
Subject: [PATCH v2 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 <ben717@...estech.com>
---
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/20250207021923.2912373-1-ben717@andestech.com

---
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: aa5804b8fb64f446260cee45e7e8a722ac7ca839
change-id: 20260120-atciic100-da3ec68f7bb4

Best regards,
--  
Ben Zong-You Xie <ben717@...estech.com>