diff options
Diffstat (limited to 'drivers/mfd/Kconfig')
| -rw-r--r-- | drivers/mfd/Kconfig | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 9da0e504bbe..29781ca1eb6 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -7,7 +7,16 @@ menuconfig MFD_SUPPORT depends on HAS_IOMEM default y help - Configure MFD device drivers. + Multifunction devices embed several functions (e.g. GPIOs, + touchscreens, keyboards, current regulators, power management chips, + etc...) in one single integrated circuit. They usually talk to the + main CPU through one or more IRQ lines and low speed data busses (SPI, + I2C, etc..). They appear as one single device to the main system + through the data bus and the MFD framework allows for sub devices + (a.k.a. functions) to appear as discrete platform devices. + MFDs are typically found on embedded platforms. + + This option alone does not add any kernel code. if MFD_SUPPORT |