Merge git://git.denx.de/u-boot-dm

cros_ec: Support the LDO access method used by spring

Add a driver to support the special LDO access used by spring. This is a
custom method in the cros_ec protocol - it does not use an I2C
pass-thr

cros_ec: Support the LDO access method used by spring

Add a driver to support the special LDO access used by spring. This is a
custom method in the cros_ec protocol - it does not use an I2C
pass-through.

There are two implementation choices:

1. Write a special LDO driver which can talk across the EC. Duplicate all
the logic from TPS65090 for retrying when the LDO fails to come up.

2. Write a special I2C bus driver which pretends to be a TPS65090 and
transfers reads and writes using the LDO message.

Either is distasteful. The latter method is chosen since it results in less
code duplication and a fairly simple (30-line) implementation of the core
logic.

The crosec 'ldo' subcommand could be removed (since i2c md/mw will work
instead) but is retained as a convenience.

Signed-off-by: Simon Glass <sjg@chromium.org>

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dm: cros_ec: Convert the I2C tunnel code to use driver model

The Chrome OS EC supports tunnelling through to an I2C bus on the EC. This
currently uses a copy of the I2C command code and a special 'c

dm: cros_ec: Convert the I2C tunnel code to use driver model

The Chrome OS EC supports tunnelling through to an I2C bus on the EC. This
currently uses a copy of the I2C command code and a special 'crosec'
sub-command.

With driver model we can define an I2C bus which tunnels through to the EC,
and use the normal 'i2c' command to access it. This simplifies the code and
removes some duplication.

Add an I2C driver which tunnels through to the EC. Adjust the EC code to
support binding child devices so that it can be set up. Adjust the existing
I2C xfer function to fit driver model better.

For now the old code remains to allow things to still work. It will be
removed in a later patch once the new flow is fully enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>

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dm: i2c: Add support for multiplexed I2C buses

Add a new I2C_MUX uclass. Devices in this class can multiplex between
several I2C buses, selecting them one at a time for use by the system.
The multip

dm: i2c: Add support for multiplexed I2C buses

Add a new I2C_MUX uclass. Devices in this class can multiplex between
several I2C buses, selecting them one at a time for use by the system.
The multiplexing mechanism is left to the driver to decide - it may be
controlled by GPIOs, for example.

The uclass supports only two methods: select() and deselect().

The current mux state is expected to be stored in the mux itself since
it is the only thing that knows how to make things work. The mux can
record the current state and then avoid switching unless it is necessary.
So select() can be skipped if the mux is already in the correct state.
Also deselect() can be made a nop if required.

Signed-off-by: Simon Glass <sjg@chromium.org>

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Merge branch 'u-boot/master' into 'u-boot-arm/master'

dm: i2c: add i2c-gpio driver

This commit adds driver model support to software emulated i2c bus driver.
This driver supports kernel-style device tree bindings. Fdt properties in use:
- compatible -

dm: i2c: add i2c-gpio driver

This commit adds driver model support to software emulated i2c bus driver.
This driver supports kernel-style device tree bindings. Fdt properties in use:
- compatible - "i2c-gpio"
- gpios - data and clock GPIO pin phandles
- delay-us - micro seconds delay between GPIOs toggle operations,
which is 1/4 of I2C speed clock period.

Added:
- Config: CONFIG_DM_I2C_GPIO
- File: drivers/i2c/i2c-gpio.c
- File: doc/device-tree-bindings/i2c/i2c-gpio.txt

Driver base code is taken from: drivers/i2c/soft-i2c.c, changes:
- use "i2c-gpio" naming
- update comments style
- move preprocesor macros into functions
- add device tree support
- add driver model i2c support
- code cleanup,
- add Kconfig entry

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Added braces in i2c_gpio_xfer() to fix style nit:
Signed-off-by: Simon Glass <sjg@chromium.org>

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Merge branch 'master' of git://git.denx.de/u-boot-arm

lpc32xx: i2c: add LPC32xx I2C interface support

Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>

Merge remote-tracking branch 'u-boot/master' into 'u-boot-arm/master'

Merge branch 'master' of git://git.denx.de/u-boot

Merge branch 'master' of git://git.denx.de/u-boot-dm

dm: i2c: Add a compatbility layer

For boards which use multiple I2C devices, or for SOCs which support
multiple boards, we might want to convert these to driver model at different
times. At present

dm: i2c: Add a compatbility layer

For boards which use multiple I2C devices, or for SOCs which support
multiple boards, we might want to convert these to driver model at different
times. At present this is difficult because we need to either use
CONFIG_DM_I2C for a board or not.

Add a compatibility layer which implements the old API, thus allowing a
board to move to driver model for I2C without requiring that everything it
uses is moved in the same commit.

Signed-off-by: Simon Glass <sjg@chromium.org>

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i2c: UniPhier: add driver for UniPhier FIFO-builtin i2c controller

This commit adds on-chip I2C driver used on newer SoCs of Panasonic
UniPhier platform.

Signed-off-by: Masahiro Yamada <yamada.m@jp

i2c: UniPhier: add driver for UniPhier FIFO-builtin i2c controller

This commit adds on-chip I2C driver used on newer SoCs of Panasonic
UniPhier platform.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>

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i2c: UniPhier: add driver for UniPhier i2c controller

This commit adds on-chip I2C driver used on some old Panasonic
UniPhier SoCs.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Review

i2c: UniPhier: add driver for UniPhier i2c controller

This commit adds on-chip I2C driver used on some old Panasonic
UniPhier SoCs.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>

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Merge git://git.denx.de/u-boot-dm

dm: i2c: Add a sandbox I2C driver

This driver includes some test features such as only supporting certain
bus speeds. It passes its I2C traffic through to an emulator.

Acked-by: Heiko Schocher <hs@

dm: i2c: Add a sandbox I2C driver

This driver includes some test features such as only supporting certain
bus speeds. It passes its I2C traffic through to an emulator.

Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

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dm: i2c: Add I2C emulation driver for sandbox

In order to test I2C we need some sort of emulation interface. Add hooks
to allow a driver to emulate an I2C device for sandbox.

Signed-off-by: Simon G

dm: i2c: Add I2C emulation driver for sandbox

In order to test I2C we need some sort of emulation interface. Add hooks
to allow a driver to emulate an I2C device for sandbox.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

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dm: i2c: Add a uclass for I2C

The uclass implements the same operations as the current I2C framework but
makes some changes to make it fit driver model better:

- Remove the chip address from API ca

dm: i2c: Add a uclass for I2C

The uclass implements the same operations as the current I2C framework but
makes some changes to make it fit driver model better:

- Remove the chip address from API calls
- Remove the address length from API calls
- Remove concept of 'current' I2C bus
- Drop all existing init functions

Acked-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

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Merge branch 'master' of git://git.denx.de/u-boot-i2c

blackfin: rename bfin-twi_i2c driver to adi_i2c

Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>

i2c: designware: Convert driver to multibus/multiadapter framework

In preparation for the SoCFPGA support of the designware I2C driver,
convert this driver to the common CONFIG_SYS_I2C framework.

T

i2c: designware: Convert driver to multibus/multiadapter framework

In preparation for the SoCFPGA support of the designware I2C driver,
convert this driver to the common CONFIG_SYS_I2C framework.

This patch converts all users of this driver, this is:

- ST spearxxx boards
- AXS101 (ARC700 platform)

I couldn't test this patch on those boards. Only compile tested for all
spear boards. And tested on SoCFPGA.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Tested-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Vipin Kumar <vk.vipin@gmail.com>
Cc: Jeroen Hofstee <jeroen@myspectrum.nl>

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i2c: mxs: Add basic support for i2c framework

This patch just converts the function prototypes used throughout
this driver to match those of the i2c framework. There is so far
no functional change.

i2c: mxs: Add basic support for i2c framework

This patch just converts the function prototypes used throughout
this driver to match those of the i2c framework. There is so far
no functional change. This patch does not do the deeper integration
of the framework bits.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>

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Merge branch 'master' of git://git.denx.de/u-boot-arm

Merge branch 'master' of git://git.denx.de/u-boot-arm

Merge branch 'u-boot-sunxi/master' into 'u-boot-arm/master'