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.
23 bool "Enable Driver Model for software emulated I2C bus driver"
24 depends on DM_I2C && DM_GPIO
26 Enable the i2c bus driver emulation by using the GPIOs. The bus GPIO
27 configuration is given by the device tree. Kernel-style device tree
28 bindings are supported.
29 Binding info: doc/device-tree-bindings/i2c/i2c-gpio.txt
31 config SYS_I2C_SANDBOX
32 bool "Sandbox I2C driver"
33 depends on SANDBOX && DM_I2C
35 Enable I2C support for sandbox. This is an emulation of a real I2C
36 bus. Devices can be attached to the bus using the device tree
37 which specifies the driver to use. As an example, see this device
38 tree fragment from sandbox.dts. It shows that the I2C bus has a
39 single EEPROM at address 0x2c (7-bit address) which is emulated by
40 the driver for "sandbox,i2c-eeprom", which is in
41 drivers/misc/i2c_eeprom_emul.c.
47 compatible = "sandbox,i2c";
48 clock-frequency = <400000>;
51 compatible = "i2c-eeprom";
53 compatible = "sandbox,i2c-eeprom";
54 sandbox,filename = "i2c.bin";
61 config SYS_I2C_UNIPHIER
62 bool "UniPhier I2C driver"
63 depends on ARCH_UNIPHIER && DM_I2C
66 Support for UniPhier I2C controller driver. This I2C controller
67 is used on PH1-LD4, PH1-sLD8 or older UniPhier SoCs.
69 config SYS_I2C_UNIPHIER_F
70 bool "UniPhier FIFO-builtin I2C driver"
71 depends on ARCH_UNIPHIER && DM_I2C
74 Support for UniPhier FIFO-builtin I2C controller driver.
75 This I2C controller is used on PH1-Pro4 or newer UniPhier SoCs.