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. I have only tested the Loongson-3A5000+LS7A1000/LS7A2000 under LoongArch architecture. Thanks. Changes since V1: 1. Remove the function of getting the static i2c bus number from ACPI "_UID"; 2. Fix build warning from kernel test robot. Binbin Zhou (4): 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 | 30 ++ drivers/i2c/busses/i2c-ls2x.c | 365 ++++++++++++++++++ 6 files changed, 452 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/loongson,ls2x-i2c.yaml create mode 100644 drivers/i2c/busses/i2c-ls2x.c -- 2.31.1
