RADEON_PLL_PREFER_HIGH_FB_DIV
radeon_crtc->pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
radeon_crtc->pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;