CEC_CLOCK_FREQ     55 drivers/gpu/drm/vc4/vc4_hdmi.c #define CEC_CLOCK_DIV  (HSM_CLOCK_FREQ / CEC_CLOCK_FREQ)
CEC_CLOCK_FREQ   1217 drivers/gpu/drm/vc4/vc4_hdmi.c 	const u32 usecs = 1000000 / CEC_CLOCK_FREQ;