diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 731210bef744..79d445373c34 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -1109,6 +1109,15 @@ static void radeon_atom_apply_lvds_quirks(struct drm_device *dev, lvds->pll_algo = PLL_ALGO_LEGACY; } + /* Dell Studio 15 laptop panel doesn't like new pll divider algo */ + if ((dev->pdev->device == 0x95c4) && + (dev->pdev->subsystem_vendor == 0x1028) && + (dev->pdev->subsystem_device == 0x029f)) { + if ((lvds->native_mode.hdisplay == 1280) && + (lvds->native_mode.vdisplay == 800)) + lvds->pll_algo = PLL_ALGO_LEGACY; + } + } union lvds_info {