u-boot.git/drivers/i2c/muxes, branch v2017.09

i2c: muxes: add i2c gpio multiplexer driver

2017-08-23T05:04:56Z

Add an i2c mux driver providing access to i2c bus segments using a hardware MUX sitting on a master bus and controlled through gpio pins. E.G. something like: ---------- ---------- Bus segment 1 - - - - - | | SCL/SDA | |-------------- | | | |------------| | | | | | Bus segment 2 | | | Linux | GPIO 1..N | MUX |--------------- Devices | |------------| | | | | | | | Bus segment M | | | |---------------| | ---------- ---------- - - - - - SCL/SDA of the master I2C bus is multiplexed to bus segment 1..M according to the settings of the GPIO pins 1..N. Note commit log from kernel commit 92ed1a76("i2c: Add generic I2C multiplexer using GPIO API") Signed-off-by: Peng Fan Tested-by: Peng Fan (i.MX6QP-Sabreauto) Cc: Heiko Schocher Cc: Stefano Babic Cc: Simon Glass

drivers/i2c/muxes/pca954x: Add pca9547 I2C mux support

2017-07-12T04:56:48Z

This I2C mux is found, for example, on the Turris Omnia board. Signed-off-by: Marek Behun Reviewed-by: Heiko Schocher Signed-off-by: Stefan Roese

dm: core: Update device_bind_driver_to_node() to use ofnode

2017-06-01T13:03:08Z

Adjust this function to us an ofnode instead of an offset, so it can be used with livetree. This involves updating all callers. Signed-off-by: Simon Glass

dm: core: Replace of_offset with accessor

2017-02-08T13:12:14Z

At present devices use a simple integer offset to record the device tree node associated with the device. In preparation for supporting a live device tree, which uses a node pointer instead, refactor existing code to access this field through an inline function. Signed-off-by: Simon Glass

i2c: mux: Allow muxes to work as children of i2c bus without i2c-parent

2017-01-18T05:37:57Z

For mux check if the parent is already a device of UCLASS_I2C and if yes just use that. Otherwise see if someone specified an i2c-parent phandle. This mimics the behavior found in the Kernel, as it removes the requirement to explicitly specify a i2c-parent phandle. Signed-off-by: Moritz Fischer Cc: Heiko Schocher Cc: Bin Meng Cc: Simon Glass Cc: Michal Simek Cc: u-boot@lists.denx.de

i2c: Drop redundant platform data setting in drivers

2016-08-12T04:41:41Z

The i2c uclass has a default setting for per_child_platdata_auto_alloc_size so drivers do not need to set it. Remove this from drivers to avoid confusion. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

i2c: muxes: Add support for TI PCA954X mux

2016-05-17T06:28:50Z

Add support for common TI i2c mux which is available on ZynqMP zcu102 board. DM i2c mux core code is selecting/deselecting bus before/after every command is performed that's why only one channel is active at a time. That's also the reason why deselect is just disable all available channels. Signed-off-by: Michal Simek Reviewed-by: Heiko Schocher Reviewed-by: Simon Glass

dm: i2c: Allow muxes to be enabled for SPL separately

2016-01-22T03:42:35Z

Since I2C muxes are seldom needed in SPL, and the code for this increases the size somewhat, add a separate option to enable I2C muxes for SPL. Signed-off-by: Simon Glass

Kconfig: i2c: Fix indentation

2015-12-11T05:30:01Z

Use tabs instead of space for indentation. Signed-off-by: Michal Simek Reviewed-by: Simon Glass

Kconfig: i2c: Fix typo Suport -> Support

2015-12-11T05:29:54Z

Fix typo in command description. Signed-off-by: Michal Simek Reviewed-by: Simon Glass