rk3566 android CMA预留内存系统层获取ddr容量变小
作者:互联网
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
reserved: buffer@0 {
compatible = "shared-dma-pool";
reusable;
reg = <0x0 0x70000000 0x0 0x10000000>;
linux,cma-default; };
};
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
标签:reserved,0.000000,rk3566,ddr,CMA,memory,pool,size 来源: https://www.cnblogs.com/ChenChangXiong/p/15772402.html