Re: [PATCH v8 00/39] Add HDMI 2.0 support to DW HDMI QP TX

[Maud Spierings]

> Enable HDMI 2.0 display modes (e.g. 4K@60Hz) on the Synopsys DW HDMI QP
> TX controller, as found in Rockchip RK3576 & RK3588 SoCs, by adding SCDC
> management for high TMDS clock ratio and scrambling.
>
> Since SCDC state is lost on sink disconnects, the bridge driver needs to
> trigger a CRTC reset during connector detection.  To support this, the
> series introduces the connector and bridge scrambling infrastructure
> (patches 1-8), wires it up through the bridge connector layer with an
> atomic-aware detect_ctx hook (patches 9-11), then implements the SCDC
> scrambling feature in the DW HDMI QP bridge driver (patches 12-15).
>
> Patches 16-18 are minor cleanups in the Rockchip platform driver.
> Patches 19-23 improve HPD handling by deferring IRQ registration until
> the connector is fully initialized, adding .enable_hpd()/.disable_hpd()
> PHY ops, and restricting HPD events to the affected connector.
>
> Patches 24-25 convert vc4 HDMI to the common SCDC scrambling helpers as
> a proof of reuse, replacing the driver-local scrambling implementation.
>
> Patches 26-30 add KUnit tests: connector scrambler validation, a new
> 4K@60Hz 600MHz EDID, hdmi_state_helper scrambling tests, and EDID
> conformity fixes for some of the existing test blobs.
>
> This has been tested on the following boards:
>
> * Radxa ROCK 5B (RK3588)
> * Radxa ROCK 4D (RK3576)
> * Raspberry Pi 5 Model B Rev 1.1 (BCM2712 D0)
>
> Note that commit d87773de9efe1 ("clocksource/drivers/arm_arch_timer:
> Default to EL2 virtual timer when running VHE"), introduced in v7.2-rc1,
> causes Raspberry Pi 5 to hang during boot.  Reverting the commit
> restores normal boot.  This issue has already been reported in [1];
> alternatively, the workaround proposed in [2] can be applied.
>
> Regards,
> Cristian
>
> [1] https://lore.kernel.org/all/ea15cce1-b393-43f6-8d58-3d6f90f0c0cd@xxxxxxxxxxx/
> [2] https://lore.kernel.org/all/20260619204832.586079-1-dan@xxxxxxxxxxxxxxx/
>
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>

Tested on an Orangepi 5+ board (rk3588), with a 4k60 tv and a 1440p100 
monitor.

To all applicable patches:

Tested-by: Maud Spierings <maud_spierings@xxxxxxxxxxx>

Kind regards,
Maud