Defined in 3 files as a config:

• arch/x86/soc/intel_quark/quark_x1000/Kconfig.defconfig.series, line 166 (as a config)
• boards/arc/arduino_101_sss/Kconfig.defconfig, line 33 (as a config)
• drivers/spi/Kconfig, line 125 (as a config)

Referenced in 3 files:

• drivers/spi/spi_dw_legacy.c, line 431
• drivers/spi/spi_intel.c, line 474
• drivers/spi/spi_qmsi.c, line 356