You cannot work with A133 firmware using standard Ubuntu repositories. You need the Allwinner "DragonBoard" or "Tina Linux" SDK, or a mainline build environment.
Documentation
For Android, you interact with the . Firmware work here means ensuring /dev/cma (Contiguous Memory Allocator) is sized correctly for a camera sensor. allwinner+a133+firmware+work
. Working with its firmware often involves navigating between the official Board Support Package (BSP) and the growing Mainline Linux Current Firmware Landscape Mainline Linux & U-Boot You cannot work with A133 firmware using standard
&pwm1 status = "okay"; ;