clk_HFPERCLKUSART1 25 include/dt-bindings/clock/efm32-cmu.h #define clk_HFPERCLKUSART1 20 clk_HFPERCLKUSART1 25 scripts/dtc/include-prefixes/dt-bindings/clock/efm32-cmu.h #define clk_HFPERCLKUSART1 20