GMBUS_RATE_1MHZ    38 drivers/gpu/drm/gma500/psb_intel_reg.h #define   GMBUS_RATE_1MHZ	(3<<8) /* reserved on Pineview */
GMBUS_RATE_1MHZ  3214 drivers/gpu/drm/i915/i915_reg.h #define   GMBUS_RATE_1MHZ	(3 << 8) /* reserved on Pineview */