More Polaris IDs, Golden Register Settings Added To AMDGPU
Written by Michael Larabel in Radeon on 17 May 2016 at 05:29 PM EDT. 22 Comments
Another day, another round of more open-source driver work out of the AMD folks. The latest are some minor Polaris updates for the AMDGPU DRM driver.

The folks working on the AMDGPU driver stack sent out four commits today for AMDGPU DRM -- adding in new PCI IDs and updating the golden register settings, each done for Polaris 10 and Polaris 11. Polaris 10 is expected to represent the mid-range chips while Polaris 11 will be on the lower-end. Polaris 10 was previously codenamed Ellesmere and Polaris 11 as Baffin.

Newly-added Polaris PCI IDs include 0x67C1, 0x67C2, 0x67C4, 0x67C7, 0x67C8, 0x67C9, 0x67CA, 0x67CC, and 0x67CF... Certainly more than before of the previous Polaris 10 PCI IDs being just 0x67C0 and 0x67DF, but keep in mind the hardware vendors tend to reserve more PCI IDs than they necessarily end up releasing as products to market.

New Polaris 11 PCI IDs include 0x67E3, 0x67EF, and 0x67E7 to complement the current ones of 0x67E0, 0x67E1, 0x67E8, 0x67E9, 0x67EB, and 0x67FF.

Unfortunately no further details about the golden settings update, with what's changed with these minor golden Polaris updates, but they tend to be for matching the configuration programmed by the binary driver for offering the best performance, etc. The four new patches are sitting for now on the dri-devel list.
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