PS4 LINUX STATUS

status.md

PS4 Bridge / Hardware Status and Open Issues

Last updated: 2026-04-21

This document tracks current bring-up status and remaining issues in checklist form.

Feature status

Working / confirmed

• GPU frequency is working. (SMU NEEDED)
• HDMI audio is fixed.
• HDMI reconnect base fix landed.
• Belize display bring-up issues are fixed.
• ICC is complete on Aeolia.
• ICC is complete on Belize.
• 128MB payloads work.
• Hardware decoding was reported working in later testing.

Still broken / incomplete

• CPU dynamic frequency scaling.
• Fully automatic hotplug detection without manual reprobe.
• EDID still needs fixing on Aeolia and Belize.
• Aeolia / Belize mode detection is incorrect in some cases.
• Wrong display modes are being found / reported on Aeolia and Belize.
• Belize EDID logging / log collection.
• Display connection polling.
• Additional payload patching for the 683 MHz clock path on fat models.
• GPU audio crackling under heavy GPU load.
• Device-specific UVD sequencing.
• GPU driver optimization.

Detailed checklist

CPU frequency

• CPU initializes and locks to the Orbis-defined boot frequency.
• Dynamic frequency scaling is available.
• Earlier maybe patched / awaiting testing path was checked and did not lead anywhere useful.

GPU frequency

• GPU frequency is currently working.
• Earlier uncertain fixed???? status was superseded by later working status.

GPU driver

• GPU driver optimization is finished.
• Earlier rework / fix stage improved to needs optimization.

Display bring-up / hotplug / reconnect

• Base reconnect fix landed earlier.
• Belize display bring-up issues are fixed.
• Hotplug is fully automatic.
• Current behavior still requires manual reprobe.
• Display connection polling is finished.
• Aeolia signal handling by syscon has been ruled out as a cause.

HDMI audio

• HDMI audio output is fixed.
• Bring-up was fixed by enabling IEC958 on R6xx converters during initialization.

EDID

• EDID handling is fully correct on Aeolia.
• EDID handling is fully correct on Belize.
• EDID is being read far enough to expose mode-related problems.
• Aeolia finds the correct modes.
• Belize finds the correct modes.
• Wrong modes / mode tables still need investigation on Aeolia and Belize.
• Belize EDID logs have been collected.

ICC

• ICC works on Aeolia.
• ICC works on Belize.
• Earlier ICC remap / validation follow-up moved from TODO to complete.

Payloads

• 128MB payloads work.
• Fat-model 683 MHz payload-related clock patching is complete.

GPU audio crackling

• HDMI audio crackling under high GPU load is fixed.
• Crackling was reported under heavy GPU usage.
• The problem does not appear on USB audio devices.
• Another report confirmed the same issue on an older kernel.
• A working mitigation or workaround exists.

UVD / hardware decoding

• Early hardware decoding status was broken.
• Later testing reported hardware decoding as working.
• UVD device-specific sequencing is finalized.

Implementation notes

• HDMI hotplug detection work used DPCD AUX status plus polling.
• HDMI audio bring-up required IEC958 enable on R6xx converters at init.
• Belize display bring-up issues were resolved.
• Current display bring-up focus has shifted to EDID correctness and mode detection on Aeolia / Belize.

Open items summary

• CPU dynamic frequency scaling
• fully automatic hotplug detection / reprobe behavior
• EDID fix-up on Aeolia / Belize
• wrong mode detection on Aeolia / Belize
• Belize EDID logs
• display connection polling
• remaining payload patching for fat models
• GPU audio crackling investigation
• UVD device-specific sequencing
• GPU driver optimization