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Add Device Model based I2C driver for ast2500/ast2400 SoCs.
The driver is very limited, it only supports master mode and
synchronous byte-by-byte reads/writes, no DMA or Pool Buffers.
Signed-off-by: Maxim Sloyko <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Acked-by: Heiko Schocher <[email protected]>
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This patch allows using i2c commands (e.g. "i2c probe", "i2c md", etc)
without the need to first select the bus number with e.g. "i2c dev 0".
This is the "i2c" command behavior similar to the one from pre DM, where
by default bus 0 was immediately accessible.
Signed-off-by: Lukasz Majewski <[email protected]>
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Add lpi2c driver for i.MX7ULP.
Need to enable the two options to use this driver:
CONFIG_DM_I2C=y
CONFIG_SYS_I2C_IMX_LPI2C=y
Signed-off-by: Peng Fan <[email protected]>
Acked-by: Heiko Schocher <[email protected]>
Cc: Stefano Babic <[email protected]>
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With the Kconfig re-sync with Linux 4.10, characters such as
'}', ';' in Kconfig help message cause warnings:
$ make defconfig
*** Default configuration is based on 'sandbox_defconfig'
drivers/i2c/Kconfig:132:warning: ignoring unsupported character '}'
drivers/i2c/Kconfig:132:warning: ignoring unsupported character ';'
Drop the Device Tree fragment from the help.
Acked-by: Heiko Schocher <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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Adding Kconfig for SYS_I2C_S3C24X0.
Signed-off-by: Jaehoon Chung <[email protected]>
Signed-off-by: Minkyu Kang <[email protected]>
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Added kconfig for SYS_I2C_MXC driver.
Cc: Stefano Babic <[email protected]>
Cc: Heiko Schocher <[email protected]>
Cc: Matteo Lisi <[email protected]>
Cc: Michael Trimarchi <[email protected]>
Signed-off-by: Jagan Teki <[email protected]>
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Add i2c driver.
Signed-off-by: Songjun Wu <[email protected]>
Reviewed-by: Heiko Schocher <[email protected]>
Acked-by: Heiko Schocher <[email protected]>
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On Tegra186, some I2C controllers are directly controlled by the main CPU,
whereas others are controlled by the BPMP, and can only be accessed by the
main CPU via IPC requests to the BPMP. This driver covers the latter case.
Signed-off-by: Stephen Warren <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Heiko Schocher <[email protected]>
Signed-off-by: Tom Warren <[email protected]>
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This patch adds the necessary functions and Kconfig entry to make the
MVTWSI I2C driver compatible with the driver model.
A possible device tree entry might look like this:
i2c@11100 {
compatible = "marvell,mv64xxx-i2c";
reg = <0x11000 0x20>;
clock-frequency = <100000>;
u-boot,i2c-slave-addr = <0x0>;
};
Signed-off-by: Mario Six <[email protected]>
Reviewed-by: Stefan Roese <[email protected]>
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The DW I2C controller in the SPEAr SoCs doesn't support the enable
status register check. This patch selects
SYS_I2C_DW_ENABLE_STATUS_UNSUPPORTED for these boards.
Signed-off-by: Stefan Roese <[email protected]>
Cc: Heiko Schocher <[email protected]>
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This patch adds an entry for the Designware I2C driver in Kconfig.
Signed-off-by: Stefan Roese <[email protected]>
Cc: Heiko Schocher <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Signed-off-by: Mario Six <[email protected]>
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This is a possible drop in replacement for drivers/i2c/zynq-i2c.c
Since this is cadence IP it has been renamed to cdns-i2c,
to make sense with the compatible string.
Signed-off-by: Moritz Fischer <[email protected]>
Reviewed-by: Heiko Schocher <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
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This is used on most Intel platforms. We don't have a driver for it yet, but
add a stub to handle the init. For now this targets ivybridge so we may want
to add a device tree binding and generalise it when other platforms are
supported.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Heiko Schocher <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Add an I2C driver for the Rockchip RK3288, using driver model. It should work
for other Rockchip SoCs also.
Signed-off-by: Simon Glass <[email protected]>
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The menuconfig for drivers are getting more and more cluttered
and unreadable because too many entries are displayed in a single
flat menu. Use hierarchic menu for each category.
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
[trini: Update to apply again in a few places, drop USB hunk]
Signed-off-by: Tom Rini <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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The business for UniPhier Soc family has been transferred from
Panasonic Corporation to Socionext Inc.
Update the SoC select menu in Kconfig.
Signed-off-by: Masahiro Yamada <[email protected]>
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Move this over to Kconfig and tidy up.
Signed-off-by: Simon Glass <[email protected]>
Acked-by: Heiko Schocher<[email protected]>
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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 <[email protected]>
Acked-by: Simon Glass <[email protected]>
Added braces in i2c_gpio_xfer() to fix style nit:
Signed-off-by: Simon Glass <[email protected]>
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Signed-off-by: Przemyslaw Marczak <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Make this option available in Kconfig and clean up the board that uses it.
Note there is also an entry in exynos5-common.h but this affects multiple
boards and should be dropped as part of the Samsung I2C migration to
driver model.
Signed-off-by: Simon Glass <[email protected]>
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Expand the help messages for each driver. Add missing Kconfig for I2C,
SPI flash and thermal.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Masahiro Yamada <[email protected]>
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This commit adds on-chip I2C driver used on newer SoCs of Panasonic
UniPhier platform.
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Acked-by: Simon Glass <[email protected]>
Acked-by: Heiko Schocher <[email protected]>
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This commit adds on-chip I2C driver used on some old Panasonic
UniPhier SoCs.
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Acked-by: Simon Glass <[email protected]>
Acked-by: Heiko Schocher <[email protected]>
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Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Acked-by: Simon Glass <[email protected]>
Acked-by: Heiko Schocher <[email protected]>
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This would be useful to start moving various config options.
Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Simon Glass <[email protected]>
Tested-by: Simon Glass <[email protected]>
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