cail_pll_write   2013 drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c 	atom_card_info->pll_write = cail_pll_write;
cail_pll_write    997 drivers/gpu/drm/radeon/radeon_device.c 	atom_card_info->pll_write = cail_pll_write;