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How does M4 and A9 on i.mx6sx access DDR

Question asked by jingyang xie on Jan 3, 2017
Latest reply on Jun 10, 2018 by jingyang xie

In my i.mx6sx sdb board,there is only a DDR3(1G),How can I allocate some memory(such as 200M) as shared memory ? How dose M4 and A9 access the shared memory I allocated?