IMX8MN_GPU_PLL_REF_SEL 21 include/dt-bindings/clock/imx8mn-clock.h #define IMX8MN_GPU_PLL_REF_SEL 12 IMX8MN_GPU_PLL_REF_SEL 21 scripts/dtc/include-prefixes/dt-bindings/clock/imx8mn-clock.h #define IMX8MN_GPU_PLL_REF_SEL 12