ucCoreRefClkSource 8363 drivers/gpu/drm/amd/include/atombios.h   UCHAR  ucCoreRefClkSource;                    // value of CORE_REF_CLK_SOURCE
ucCoreRefClkSource 7092 drivers/gpu/drm/radeon/atombios.h   UCHAR  ucCoreRefClkSource;                    // value of CORE_REF_CLK_SOURCE