Gpu_mem minimum GPU memory for camera use Note: As per popcornmix states that CMA is not officially supported.ĭisable_camera_led Turn off the red camera LED when recording video or taking a still picture The following options need to be in cmdline.txt for CMA to work: November 2012 supports CMA, which means the memory split between ARM and GPU is managed dynamically at runtime.Ĭma_lwm When GPU has less than cma_lwm (low water mark) memory available it will request some from ARM.Ĭma_hwm When GPU has more than cma_hwm (high water mark) memory available it will release some to ARM. Default not setĭisable_pvt Disable adjusting the refresh rate of RAM every 500 ms (measuring RAM temperature).Īdditional documentation can be found on the official Raspberry Pi documentation CMA - dynamic memory split Gpu_mem_1024 GPU memory in megabyte for Raspberry Pis with 1024 MB or more memory. Gpu_mem_512 GPU memory in megabyte for the 512 MB Raspberry Pi. Gpu_mem_256 GPU memory in megabyte for the 256 MB Raspberry Pi. Sets the memory split between the ARM and GPU. # Make display smaller to stop text spilling off the screenĪnd here is another example file, containing extended documentation of features.ĭisable_l2cache disable ARM access to GPU's L2 cache. # Set monitor resolution to 1024x768 XGA 60 Hz (HDMI_DMT_XGA_60) # Force the monitor to HDMI mode so that sound will be sent over HDMI cable # Set sdtv mode to PAL (as used in Europe) Note: In the newer Raspberry Pi models there is # before every line, if you want changes to have an affect then 'uncomment' meaning remove the #. Comments may be added by starting a line with the '#' character.
You may specify only one option per line. The format is "property=value" where value is an integer. 6.2 Which values are valid for my monitor?.
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