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Align the framebuffer size on MMU_SECTION_SIZE in kernel, = max 2MB for LPAE for armV7, to avoid issue with the simple frame buffer activation, when U-Boot add a reserved memory in the kernel device tree to preserve the splash screen until Linux driver initialization. See Linux documentation for details: Documentation/devicetree/bindings/display/simple-framebuffer.yaml Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>