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AMD Posts Code Enabling "Cyan Skillfish" Display Support Due To Different DCN2 Variant

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  • AMD Posts Code Enabling "Cyan Skillfish" Display Support Due To Different DCN2 Variant

    Phoronix: AMD Posts Code Enabling "Cyan Skillfish" Display Support Due To Different DCN2 Variant

    Since July we've seen AMD open-source driver engineers posting code for "Cyan Skillfish" as an APU with Navi 1x graphics. While initial support for Cyan Skillfish was merged for Linux 5.15, it turns out the display code isn't yet wired up due to being a different DCN2 variant for its display block...

    https://www.phoronix.com/scan.php?pa...lfish-DCN-2.01

  • #2
    This has to be a variant of the 4700S (the PS5 SoC based CPU with GPU disabled) with some of the onboard graphics enabled.

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    • #3
      Originally posted by sykobee View Post
      This has to be a variant of the 4700S (the PS5 SoC based CPU with GPU disabled) with some of the onboard graphics enabled.
      Could they turn a RDNA2 core in a RDNA1 one just cutting damaged silicon? I had my doubts.

      In another place someone said a RDNA1 core would make sense for mobile/embedded CPUs, since those are power constrained and RDNA2 may have stuff like ray tracing, that would be a waste of silicon if made to run on such limited conditions. Nvidia itself didn't put the fancy stuff on their low powered cards too.

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      • #4
        Originally posted by sykobee View Post
        This has to be a variant of the 4700S (the PS5 SoC based CPU with GPU disabled) with some of the onboard graphics enabled.
        The worst guess made yet.

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        • #5
          All this seemingly implies a lower end APU... but why would anyone pay for a custom lower end APU? It would be cheaper to just use an existing, newer design unless the shipping volume was absolutely massive.


          If its not custom, is this the new Brazos from AMD? Still seems like a weird config for that niche.
          Last edited by brucethemoose; 28 September 2021, 11:38 AM.

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          • #6
            Originally posted by jaxa View Post

            The worst guess made yet.
            If we're making bad guesses, then I have heard that RDNA 1 is preferred to RDNA 2 for mining. Therefore, this could be a mining APU.

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