rk3566 android CMA预留内存系统层获取ddr容量变小
reserved-memory {
dts中配置了预留的memery
[ 0.000000] Reserved memory: created CMA memory pool at 0x0000000060000000, size 512 MiB
[ 0.000000] OF: reserved mem: initialized node rknpu, compatible id shared-dma-pool
[ 0.000000] Reserved memory: created CMA memory pool at 0x0000000010000000, size 8 MiB
[ 0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
所以导致2G的DDR实际上只有1.3G
去掉后解决问题