2 bool "Enable Driver Model for I2C drivers"
5 Enable driver model for I2C. The I2C uclass interface: probe, read,
6 write and speed, is implemented with the bus drivers operations,
7 which provide methods for bus setting and data transfer. Each chip
8 device (bus child) info is kept as parent platdata. The interface
9 is defined in include/i2c.h. When i2c bus driver supports the i2c
10 uclass, but the device drivers not, then DM_I2C_COMPAT config can
11 be used as compatibility layer.
14 bool "Enable I2C compatibility layer"
17 Enable old-style I2C functions for compatibility with existing code.
18 This option can be enabled as a temporary measure to avoid needing
19 to convert all code for a board in a single commit. It should not
20 be enabled for any board in an official release.
22 config I2C_CROS_EC_TUNNEL
23 tristate "Chrome OS EC tunnel I2C bus"
26 This provides an I2C bus that will tunnel i2c commands through to
27 the other side of the Chrome OS EC to the I2C bus connected there.
28 This will work whatever the interface used to talk to the EC (SPI,
29 I2C or LPC). Some Chromebooks use this when the hardware design
30 does not allow direct access to the main PMIC from the AP.
34 bool "Enable Driver Model for software emulated I2C bus driver"
35 depends on DM_I2C && DM_GPIO
37 Enable the i2c bus driver emulation by using the GPIOs. The bus GPIO
38 configuration is given by the device tree. Kernel-style device tree
39 bindings are supported.
40 Binding info: doc/device-tree-bindings/i2c/i2c-gpio.txt
42 config SYS_I2C_SANDBOX
43 bool "Sandbox I2C driver"
44 depends on SANDBOX && DM_I2C
46 Enable I2C support for sandbox. This is an emulation of a real I2C
47 bus. Devices can be attached to the bus using the device tree
48 which specifies the driver to use. As an example, see this device
49 tree fragment from sandbox.dts. It shows that the I2C bus has a
50 single EEPROM at address 0x2c (7-bit address) which is emulated by
51 the driver for "sandbox,i2c-eeprom", which is in
52 drivers/misc/i2c_eeprom_emul.c.
58 compatible = "sandbox,i2c";
59 clock-frequency = <400000>;
62 compatible = "i2c-eeprom";
64 compatible = "sandbox,i2c-eeprom";
65 sandbox,filename = "i2c.bin";
72 config SYS_I2C_UNIPHIER
73 bool "UniPhier I2C driver"
74 depends on ARCH_UNIPHIER && DM_I2C
77 Support for UniPhier I2C controller driver. This I2C controller
78 is used on PH1-LD4, PH1-sLD8 or older UniPhier SoCs.
80 config SYS_I2C_UNIPHIER_F
81 bool "UniPhier FIFO-builtin I2C driver"
82 depends on ARCH_UNIPHIER && DM_I2C
85 Support for UniPhier FIFO-builtin I2C controller driver.
86 This I2C controller is used on PH1-Pro4 or newer UniPhier SoCs.
88 source "drivers/i2c/muxes/Kconfig"