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rk3566 android CMA预留内存系统层获取ddr容量变小

本文主要是介绍rk3566 android CMA预留内存系统层获取ddr容量变小,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!

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

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