Intel Low Power Subsystem support in PCI mode

modulename: intel-lpss-pci.ko

configname: CONFIG_MFD_INTEL_LPSS_PCI

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Intel Low Power Subsystem support in PCI mode
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This driver supports Intel Low Power Subsystem (LPSS) devices such as
I2C, SPI and HS-UART starting from Intel Sunrisepoint (Intel Skylake
PCH) in PCI mode.

source code:
drivers/mfd//intel-lpss-pci.c