GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_SHIFT  981 drivers/gpu/drm/i915/i915_reg.h #define  GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_MASK	(1 << GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_SHIFT)
GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_SHIFT  640 drivers/gpu/drm/i915/intel_device_info.c 			    GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_SHIFT;