u-boot.git/doc/device-tree-bindings/i2c, branch v2020.10

i2c: add nexell driver

2020-07-29T12:43:40Z

Changes in relation to FriendlyARM's U-Boot nanopi2-v2016.01: - i2c/nx_i2c.c: Some adaptions mainly because of changes in "struct udevice". - several Bugfixes in nx_i2c.c. - the driver has been for s5p6818 only. Code extended appropriately in order s5p4418 is also working. - "probe_chip" added. - pinctrl-driver/dt is used instead of configuring the i2c I/O-pins in the i2c-driver. - '#ifdef CONFIG...' changed to 'if (IS_ENABLED(CONFIG...))' where possible (and similar). - livetree API (dev_read_...) is used instead of fdt one (fdt...). Signed-off-by: Stefan Bosch

i2c: i2c-cortina: added CAxxxx I2C support

2020-07-09T04:02:44Z

Add I2C controller support for Cortina Access CAxxxx SoCs Signed-off-by: Arthur Li Signed-off-by: Alex Nemirovsky CC: Heiko Schocher Reviewed-by: Heiko Schocher hs: fixed build error, add include log.h

i2c: octeon_i2c: Add I2C controller driver for Octeon

2020-07-09T04:02:44Z

Add support for I2C controllers found on Octeon II/III and Octeon TX TX2 SoC platforms. Signed-off-by: Aaron Williams Signed-off-by: Suneel Garapati Signed-off-by: Stefan Roese Cc: Heiko Schocher Cc: Simon Glass Cc: Daniel Schwierzeck Cc: Aaron Williams Cc: Chandrakala Chavva Reviewed-by: Simon Glass Reviewed-by: Heiko Schocher Reviewed-by: Rayagonda Kokatanur

dm: i2c-gpio: add support for clock stretching

2020-03-16T06:55:06Z

This adds support for clock stretching to the i2c-gpio driver. This is accomplished by switching the GPIO used for the SCL line to an input when it should be driven high, and polling on the SCL line value until it goes high (indicating that the I2C slave is no longer pulling it low). This is enabled by default; for gpios which cannot be configured as inputs, the i2c-gpio,scl-output-only property can be used to fall back to the previous behavior. Signed-off-by: Michael Auchter Cc: Heiko Schocher Reviewed-by: Heiko Schocher

doc: i2c: gpio: Document deblock sequence on probe

2020-03-16T06:47:52Z

Document the gpio-i2c deblocking sequence binding. Signed-off-by: Marek Vasut Reviewed-by: Heiko Schocher

i2c: designware_i2c: Bring in the binding file

2020-01-27T06:20:42Z

Bring in this file from Linux v5.4. Signed-off-by: Simon Glass Reviewed-by: Heiko Schocher

DM: I2C: Introduce 'u-boot, i2c-transaction-bytes' property

2019-04-11T13:21:33Z

The 'u-boot,i2c-transaction-bytes' device tree property provides information regarding number of bytes transferred by a device in a single transaction. This change is necessary to avoid hanging devices after soft reset. One notable example is communication with MC34708 device: 1. Reset when communicating with MC34708 via I2C. 2. The u-boot (after reboot -f) tries to setup the I2C and then calls force_idle_bus. In the same time MC34708 still has some data to be sent (as it transfers data in 24 bits chunks). 3. The force_idle_bus() is not able to make the bus idle as 8 SCL clocks may be not enough to have the full transmission. 4. We end up with I2C inconsistency with MC34708. This PMIC device requires 24+ SCL cycles to make finish any pending I2C transmission. Signed-off-by: Lukasz Majewski

dm: i2c: dts: Add gpios and pinctrl device tree properties

2018-04-11T09:34:17Z

The commit describe usage of gpios and pinctrl device tree properties in order to enable gpio-based software deblocking. Signed-off-by: Alexander Kochetkov

i2c: add i2c driver for stm32

2017-08-23T05:04:40Z

Add i2c driver which can be used on both STM32F7 and STM32H7. This I2C block supports the following features: _ Slave and master modes _ Multimaster capability _ Standard-mode (up to 100 kHz) _ Fast-mode (up to 400 kHz) _ Fast-mode Plus (up to 1 MHz) _ 7-bit and 10-bit addressing mode _ Multiple 7-bit slave addresses (2 addresses, 1 with configurable mask) _ All 7-bit addresses acknowledge mode _ General call _ Programmable setup and hold times _ Easy to use event management _ Optional clock stretching _ Software reset Signed-off-by: Christophe Kerello Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass

i2c: atmel: DT binding for i2c driver

2016-08-15T20:12:00Z

DT binding documentation for atmel i2c driver. Signed-off-by: Songjun Wu Reviewed-by: Heiko Schocher Acked-by: Heiko Schocher