2 # Multifunction miscellaneous devices
5 menu "Multifunction device drivers"
8 bool "Enable crosec command"
11 Enable command-line access to the Chrome OS EC (Embedded
12 Controller). This provides the 'crosec' command which has
13 a number of sub-commands for performing EC tasks such as
14 updating its flash, accessing a small saved context area
15 and talking to the I2C bus behind the EC (if there is one).
18 bool "Enable Chrome OS EC"
20 Enable access to the Chrome OS EC. This is a separate
21 microcontroller typically available on a SPI bus on Chromebooks. It
22 provides access to the keyboard, some internal storage and may
23 control access to the battery and main PMIC depending on the
24 device. You can use the 'crosec' command to access it.
27 bool "Enable Chrome OS EC I2C driver"
30 Enable I2C access to the Chrome OS EC. This is used on older
31 ARM Chromebooks such as snow and spring before the standard bus
32 changed to SPI. The EC will accept commands across the I2C using
33 a special message protocol, and provide responses.
36 bool "Enable Chrome OS EC LPC driver"
39 Enable I2C access to the Chrome OS EC. This is used on x86
40 Chromebooks such as link and falco. The keyboard is provided
41 through a legacy port interface, so on x86 machines the main
42 function of the EC is power and thermal management.
44 config CROS_EC_SANDBOX
45 bool "Enable Chrome OS EC sandbox driver"
46 depends on CROS_EC && SANDBOX
48 Enable a sandbox emulation of the Chrome OS EC. This supports
49 keyboard (use the -l flag to enable the LCD), verified boot context,
50 EC flash read/write/erase support and a few other things. It is
51 enough to perform a Chrome OS verified boot on sandbox.
54 bool "Enable Chrome OS EC SPI driver"
57 Enable SPI access to the Chrome OS EC. This is used on newer
58 ARM Chromebooks such as pit, pi and nyan-big. The SPI interface
59 provides a faster and more robust interface than I2C but the bugs
62 config CONFIG_FSL_SEC_MON
63 bool "Enable FSL SEC_MON Driver"
65 Freescale Security Monitor block is responsible for monitoring
67 Security Monitor can be transitioned on any security failures,
68 like software violations or hardware security violations.
71 bool "Enable PCA9551 LED driver"
73 Enable driver for PCA9551 LED controller. This controller
74 is connected via I2C. So I2C needs to be enabled.
76 config PCA9551_I2C_ADDR
77 hex "I2C address of PCA9551 LED controller"
78 depends on PCA9551_LED
81 The I2C address of the PCA9551 LED controller.
84 bool "Enable support for reset drivers"
87 Enable reset drivers which can be used to reset the CPU or board.
88 Each driver can provide a reset method which will be called to
89 effect a reset. The uclass will try all available drivers when
90 reset_walk() is called.