Defined in 4 files as a config:

• arch/x86/soc/intel_quark/quark_x1000/Kconfig.defconfig.series, line 168 (as a config)
• boards/arc/arduino_101_sss/Kconfig.defconfig, line 30 (as a config)
• boards/x86/arduino_101/Kconfig.defconfig, line 27 (as a config)
• drivers/spi/Kconfig, line 131 (as a config)

Referenced in 3 files:

• drivers/spi/spi_dw_legacy.c, line 432
• drivers/spi/spi_intel.c, line 475
• drivers/spi/spi_qmsi.c, line 357