GFXCLK_SOURCE_PLL 356 drivers/gpu/drm/amd/powerplay/inc/smu11_driver_if_arcturus.h GFXCLK_SOURCE_PLL = 0, GFXCLK_SOURCE_PLL 363 drivers/gpu/drm/amd/powerplay/inc/smu11_driver_if_navi10.h GFXCLK_SOURCE_PLL = 0,