blob: 86fb36b5d4c0266fc609a69803588f9d5067eaf0 [file] [log] [blame]
Masahiro Yamadab6036bc2015-01-13 12:44:35 +09001config DM_I2C
2 bool "Enable Driver Model for I2C drivers"
3 depends on DM
4 help
Przemyslaw Marczak705fcf42015-03-31 18:57:17 +02005 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.
Masahiro Yamada26f820f2015-01-13 12:44:36 +090012
Simon Glass4bba9d32015-02-13 12:20:48 -070013config 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
Przemyslaw Marczakc54473c2015-03-31 18:57:18 +020022config 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
Simon Glass1174aad2015-03-06 13:19:04 -070031config 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
Masahiro Yamada26f820f2015-01-13 12:44:36 +090061config SYS_I2C_UNIPHIER
62 bool "UniPhier I2C driver"
63 depends on ARCH_UNIPHIER && DM_I2C
64 default y
65 help
Masahiro Yamadab6ef3a32015-05-29 17:30:01 +090066 Support for UniPhier I2C controller driver. This I2C controller
67 is used on PH1-LD4, PH1-sLD8 or older UniPhier SoCs.
Masahiro Yamada238bd0b2015-01-13 12:44:37 +090068
69config SYS_I2C_UNIPHIER_F
70 bool "UniPhier FIFO-builtin I2C driver"
71 depends on ARCH_UNIPHIER && DM_I2C
72 default y
73 help
Masahiro Yamadab6ef3a32015-05-29 17:30:01 +090074 Support for UniPhier FIFO-builtin I2C controller driver.
Masahiro Yamada238bd0b2015-01-13 12:44:37 +090075 This I2C controller is used on PH1-Pro4 or newer UniPhier SoCs.