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[0/5] i2c: ls2x: Add support for the Loongson-2K/LS7A I2C

Message ID cover.1663835855.git.zhoubinbin@loongson.cn
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Series i2c: ls2x: Add support for the Loongson-2K/LS7A I2C | expand

Message

Binbin Zhou Sept. 22, 2022, 11:39 a.m. UTC 
Hi all:

This patch series adds support for the I2C module found on various
Loongson systems with the Loongson-2K SoC or the Loongson LS7A bridge chip.

For now, the I2C driver is suitable for DT-based or ACPI-based systems.

BTW:
I have only tested on the Loongson-3A5000+LS7A1000/LS7A2000 under LoongArch
architecture.

Thanks.

Binbin Zhou (5):
  i2c: core: Pick i2c bus number from ACPI if present
  i2c: gpio: Add support on ACPI-based system
  dt-bindings: i2c: add bindings for Loongson LS2X I2C
  i2c: Add driver for Loongson-2K/LS7A I2C controller
  LoongArch: Enable LS2X I2C in loongson3_defconfig

 .../bindings/i2c/loongson,ls2x-i2c.yaml       |  48 +++
 arch/loongarch/configs/loongson3_defconfig    |   1 +
 drivers/i2c/busses/Kconfig                    |   7 +
 drivers/i2c/busses/Makefile                   |   1 +
 drivers/i2c/busses/i2c-gpio.c                 |  41 +-
 drivers/i2c/busses/i2c-ls2x.c                 | 364 ++++++++++++++++++
 drivers/i2c/i2c-core-base.c                   |  10 +-
 7 files changed, 470 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/i2c/loongson,ls2x-i2c.yaml
 create mode 100644 drivers/i2c/busses/i2c-ls2x.c