Re: [PATCH v15 1/2] drm: Add kms driver for loongson display controller

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Hi,

On 2023/6/19 18:19, Huacai Chen wrote:
Single patch is more easy to manage.

The first patch of this driver should comes a whole.
Benchmarks and debugfs are not the very basic parts.

In the V2,

Thomas told me that if we implement our own TTM-based memory manager,

we will also have the possibility of implementing a faster console.


Back to that time I do not even know the bandwidth of our hardware.

1) The bandwidth of copying buffer from the system RAM to system RAM;

2) The bandwidth of copying buffer from the system RAM to dedicated VRAM;

3) The bandwidth of copying buffer from the dedicated VRAM to system RAM;


We can make the right decision only when we know the various bandwidth listed as above.

How to implement it.

--
Jingfeng




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