在 2017-10-16 17:11，Maxime Ripard 写道：
On Sat, Oct 14, 2017 at 08:29:24PM +0800, Icenowy Zheng wrote:
A64's Display Engine 2.0 needs a section of SRAM (SRAM C) to be
claimed.
Why?
Allwinner didn't document this, but if the SRAM is not claimed, the
DE2 MMIO zone is totally not accessible.
It seems that Allwinner uses the SRAM C in the DE2 internally.
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