drivers/i2c/Kconfig

   1 config DM_I2C
   2         bool "Enable Driver Model for I2C drivers"
   3         depends on DM
   4         help
   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.
  12
  13 config DM_I2C_COMPAT
  14         bool "Enable I2C compatibility layer"
  15         depends on DM
  16         help
  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.
  21
  22 config DM_I2C_GPIO
  23         bool "Enable Driver Model for software emulated I2C bus driver"
  24         depends on DM_I2C && DM_GPIO
  25         help
  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
  30
  31 config SYS_I2C_SANDBOX
  32         bool "Sandbox I2C driver"
  33         depends on SANDBOX && DM_I2C
  34         help
  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.
  42
  43           i2c@0 {
  44                 #address-cells = <1>;
  45                 #size-cells = <0>;
  46                 reg = <0>;
  47                 compatible = "sandbox,i2c";
  48                 clock-frequency = <400000>;
  49                 eeprom@2c {
  50                         reg = <0x2c>;
  51                         compatible = "i2c-eeprom";
  52                         emul {
  53                                 compatible = "sandbox,i2c-eeprom";
  54                                 sandbox,filename = "i2c.bin";
  55                                 sandbox,size = <128>;
  56                         };
  57                 };
  58         };
  59
  60
  61 config SYS_I2C_UNIPHIER
  62         bool "UniPhier I2C driver"
  63         depends on ARCH_UNIPHIER && DM_I2C
  64         default y
  65         help
  66           Support for Panasonic UniPhier I2C controller driver.  This I2C
  67           controller is used on PH1-LD4, PH1-sLD8 or older UniPhier SoCs.
  68
  69 config SYS_I2C_UNIPHIER_F
  70         bool "UniPhier FIFO-builtin I2C driver"
  71         depends on ARCH_UNIPHIER && DM_I2C
  72         default y
  73         help
  74           Support for Panasonic UniPhier FIFO-builtin I2C controller driver.
  75           This I2C controller is used on PH1-Pro4 or newer UniPhier SoCs.