/ { memory@80000000 { device_type = "memory"; reg = <0x00 CVIMMAP_KERNEL_MEMORY_ADDR 0x00 CVIMMAP_KERNEL_MEMORY_SIZE>; }; fast_image { compatible = "cvitek,rtos_image"; reg-names = "rtos_region"; reg = <0x0 CVIMMAP_FREERTOS_ADDR 0x0 CVIMMAP_FREERTOS_SIZE>; ion-size = ; //reserved ion size for freertos }; reserved-memory { #size-cells = <0x2>; #address-cells = <0x2>; ranges; ion_reserved: ion { compatible = "ion-region"; size = <0x0 CVIMMAP_ION_SIZE>; }; }; };