sensor dma alloc failed问题

打印信息

[CAPTURE][printCapCapbility:93]:D/ driver:sunxi-vfe
[CAPTURE][printCapCapbility:94]:D/ card:sunxi-vfe
[CAPTURE][printCapCapbility[   58.682684] sunxi_buf_alloc(134) err: alloc size 0x1c2000 failed!
:95]:D/ bus_info:sunxi_vfe sunxi[   58.691821] (NULL device *): dma_alloc_coherent size 1843200 failed_vfe.0
[CAPTURE][printCapCapbility:96]:D/ version:10000
[CAPTURE][printCapCapbility:97]:D/ capbilities:5000001
[CAPTURE][printCapCapbility:98]:D/ device_caps:0

修改package/boot/uboot-sunxi/env.cfg，修改内容为ion_cma_512m的值:

setargs_nand=setenv bootargs console=${console} root=${nand_root} rootwait init=${init} ion_cma_512m=16m