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

[Sui Jingfeng]

On 2023/6/27 23:27, Sui Jingfeng wrote:
> 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.
>

I means that the benchmarks can actually improve your cognition toward 
the hardware.

Where is the bottleneck of the performance.

It also can be a kind of self test, to verify if various parts works as 
expected.