LCPLL1_CTL
val = I915_READ(LCPLL1_CTL);
I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) | LCPLL_PLL_ENABLE);
LCPLL1_CTL, LCPLL_PLL_LOCK, LCPLL_PLL_LOCK,
I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) & ~LCPLL_PLL_ENABLE);
LCPLL1_CTL, LCPLL_PLL_LOCK, 0,
.ctl = LCPLL1_CTL,