DPCLKA_CFGCR0
val = I915_READ(DPCLKA_CFGCR0);
I915_WRITE(DPCLKA_CFGCR0, val);
val = I915_READ(DPCLKA_CFGCR0);
I915_WRITE(DPCLKA_CFGCR0, val);
I915_WRITE(DPCLKA_CFGCR0, I915_READ(DPCLKA_CFGCR0) |
temp = I915_READ(DPCLKA_CFGCR0) & DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);