The root oscillators reference used to be in rcc node since3d15245502("ARM: dts: stm32mp1: explicit clock reference needed by RCC clock driver") however this is not part of upstream stm32mp151.dtsi . The RCC driver does need this reference, reinstate it locally. Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> (cherry picked from commitb651906122)