Fairphone 6 wide camera experimental Linux support

(nondescriptpointer.com)

80 points | by helonaut 6 hours ago

5 comments

  • Throwaway698514 7 minutes ago
    Does the article seem AI-written/assisted to anyone else?

    Some parts that stood out to me: > A phone camera is not a single device. On Qualcomm SoCs, the capture path is a chain: > The bus register base moved from 0xa00 to 0x1800, and encapsulating that offset shift accounted for most of the work. > It gated the AHB register bus used by the whole camera complex, including the CCI. Without it, register accesses silently returned zero. > With the wrong numbering, CSIPHY programmed a lane mask with lane 0 missing, and the PHY never locked. > This was the main bug. Frames arrived at the right rate and size, and buf_done fired, but every pixel was zero. [...] The data path delivered frame timing, but not pixel data. > Changing the register value from PLAIN64 (0xa) to 0x0 turned the all-zero frames into real images: the maximum pixel value was 255, the full colour-bar pattern appeared, and the violations stopped.

    Sorry if not, but it seems like so much uses AI nowadays.

  • NooneAtAll3 1 hour ago
    have fairphone looked into supporting GrapheneOS? what exactly is missing there other than "it's not Pixel"?
    • Telaneo 1 hour ago
      The hardware doesn't support the relevant security features GrapheneOS requires.

      https://grapheneos.org/faq#future-devices

      • NooneAtAll3 1 hour ago
        yes, yes, I know the usual song and whistle. That's why I'm saying "other than It's-Not-Pixel"

        I'm asking for details

        • svpk 18 minutes ago
          That's a pretty concrete list so it's unclear to me what you mean. They're also going to support some of the upcoming Motorola phones so it's not just pixels.

          I think the short answer of what they'd need to do in a practical way is to release a phone that uses one of the latest Qualcomm processors (those have the required hardware security features), make sure they have at least 5 years of driver support and commit to keeping the phone up to date, allow for relocking the bootloater (they might already do that). And I think that's basically it, the Graphene project would be able to take things from there.

          Realistically given that they tend to source older/weaker processors for reasons related to their goals it's unlikely they would source a processor with the required security features for their next model, but that's just a guess.

        • Telaneo 1 hour ago
          Fairphone hasn't talked about GrapheneOS at all, instead opting to be in bed with Murena and /e/os, so I doubt they've even bothered to read the list of hardware requirements. They didn't bother with the Fairphone 6, which was released barely a year ago.
  • BraveOPotato 3 hours ago
    I wish one day I could do cool stuff like that. Kudos!
  • noIdeaTheSecond 3 hours ago
    Good to see this! Love Fairphone!
  • helonaut 6 hours ago
    [dead]