This patchset adds support for the I2C controller embedded in STM32F4xx SoC. It enables I2C transfer in interrupt mode with Standard-mode and Fast-mode bus speed. Changes since v7: - Remove unneeded parenthesis in some macro definitions (Uwe) - Fix some typo (s/KhzkHZ, s/PEC/POC) (Uwe) - Fix alignment issues in some structures declaration (Uwe) - Clarify comments to argue i2c_timing values chosen (Uwe) - Raise an error if parent clk rate is out of scope during I2C hw config (Uwe) - Use dev_dbg instead of dev_err message when I2C bus is busy (Uwe) - Add more comments about stuff done by stm32f4_i2c_handle_rx_btf() (Uwe) - Simplify stm32f4_i2c_isr_error() routine implementation by removing possible status checking (Uwe) - Rework stm32f4_i2c_isr_error() routine by removing the loop to check which status occured (Uwe) - Add open-drain property for SCL pins (Uwe) - Rework unneeded mul_ccr field from i2c_timing structure - Remove min_ccr field from i2c_timing structure as default scl_period is chosen to have a correct minimal ccr value - Execute hw_config once during probe - Remove soft_reset after an I2C error as all errors are now handled and hw_config is done once during probe - Generate STOP by software when Acknowledge failure occurs - Set the max speed mode for I2C pins - Add bias-disable property for I2C pins - Use intrinsic limitation of APB bus to set I2C max input clk M'boumba Cedric Madianga (5): dt-bindings: Document the STM32 I2C bindings i2c: Add STM32F4 I2C driver ARM: dts: stm32: Add I2C1 support for STM32F429 SoC ARM: dts: stm32: Add I2C1 support for STM32429 eval board ARM: configs: stm32: Add I2C support for STM32 defconfig .../devicetree/bindings/i2c/i2c-stm32.txt | 33 + arch/arm/boot/dts/stm32429i-eval.dts | 6 + arch/arm/boot/dts/stm32f429.dtsi | 23 + arch/arm/configs/stm32_defconfig | 3 + drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-stm32f4.c | 866 +++++++++++++++++++++ 7 files changed, 942 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-stm32.txt create mode 100644 drivers/i2c/busses/i2c-stm32f4.c -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
