于 2018年3月21日 GMT+08:00 上午2:46:46, Maxime Ripard [off-list ref] 写到:

On Sat, Mar 17, 2018 at 01:53:49AM +0800, Icenowy Zheng wrote:

quoted

All the sub-blocks of Allwinner A64 DE2 needs the SRAM C on A64 SoC

to

quoted

be claimed, otherwise the whole DE2 space is inaccessible.

Add a device tree binding of the DE2 part as a sub-bus.

Where did you get the info that it was a bus?

There's no direct evidence, just some guess.

The DE2 is a whole part that is just allocated a memory
space at the user manual, and the SRAM controls the
access to all modules in the DE2.

So it might be a bus.

Implement it as a bus is a clear representation on A64.

Maxime

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