AMD Queues Its First Batch Of AMDGPU Changes For Linux 5.9: Sienna Cichlid + More

[phoronix]

Phoronix: AMD Queues Its First Batch Of AMDGPU Changes For Linux 5.9: Sienna Cichlid + More

On Friday the initial batch of AMDGPU kernel graphics driver changes were submitted to DRM-Next ahead of the Linux 5.9 merge window happening in August...

http://www.phoronix.com/scan.php?page=news_item&px=AMDGPU-Linux-5.9-Round-1

[_r00t-]

Will those changes fix ring gfx timeout bug for navi10 too?

[xxmitsu]

The only data I have found in the patches is that the new GPU has 4 SDMA engines, up from 2 in Polaris/Navi.

Oh, that thing that they plan to disable completely ?
https://gitlab.freedesktop.org/mesa/..._requests/4895

[TemplarGR]

Fingers crossed for Freesync over HDMI

[tiltkoko]

There is no new pitcairn etc. uvd firmware posted in the linux-firmware.git tree...
That has always been a missing piece.

[xxmitsu]

There is no new pitcairn etc. uvd firmware posted in the linux-firmware.git tree...
That has always been a missing piece.

I think they plan to use the old firmware with amdgpu.

[tiltkoko]

I think they plan to use the old firmware with amdgpu.

There have never existed a uvd firmware for pitcairn. UVD on pitcairn have never worked in linux, so we need a firmware for it..

[lumks]

Fingers crossed for Freesync over HDMI

For that we would need to have freesync support in general, that we do not have. Right now there is Vesa adaptive sync support. Thats a DisplayPort 1.2a feature. HDMI doesn't provide something like this and Linux is not known to support proprietary "one-way" standards to often. Better buy new hardware for displayport support, because I don't think we will see freesync support at all.

[TemplarGR]

For that we would need to have freesync support in general, that we do not have. Right now there is Vesa adaptive sync support. Thats a DisplayPort 1.2a feature. HDMI doesn't provide something like this and Linux is not known to support proprietary "one-way" standards to often. Better buy new hardware for displayport support, because I don't think we will see freesync support at all.

This is not true. We will probably see Freesync support over hdmi in the future. It is a matter of when, not if. Keep in mind that HDMI has been supported in Linux for years already. I don't understand why people keep repeating the same bullshit, that HDMI can't see support. I am using HDMI for both monitor AND audio right now, and it works perfectly fine. There goes your theory.

[bridgman]

Thanks for the information. Though let me compare the above information with the precision of information about some features of Intel's Sunny Cove microarchitecture

If you're comparing information available on unannounced vs announced products you're probably never going to be happy with the outcome. When we actually announce the product there will be a lot more information available.

BTW along with the increase in execution ports, I would argue that the biggest change in Sunny Cove is the larger instruction window - re-order buffer going up to something like 352 entries from 224.