HPRT0_SPD_MASK
u32 prtspd = (hprt0 & HPRT0_SPD_MASK) >> HPRT0_SPD_SHIFT;
speed = (hprt0 & HPRT0_SPD_MASK) >> HPRT0_SPD_SHIFT;
us_per_frame = (hprt & HPRT0_SPD_MASK) ? 1000 : 125;
if ((hprt0 & HPRT0_SPD_MASK) >> HPRT0_SPD_SHIFT == HPRT0_SPD_HIGH_SPEED)
prtspd = (hprt0 & HPRT0_SPD_MASK) >> HPRT0_SPD_SHIFT;
u32 prtspd = (hprt & HPRT0_SPD_MASK) >> HPRT0_SPD_SHIFT;