CLOCK_DIV_SHIFT 47 drivers/spi/spi-meson-spifc.c #define CLOCK_DIV_MASK (0x3f << CLOCK_DIV_SHIFT) CLOCK_DIV_SHIFT 176 drivers/spi/spi-meson-spifc.c value = (n << CLOCK_DIV_SHIFT) & CLOCK_DIV_MASK;