Hi Krzysztof,
On 18/08/26 06:05, Krzysztof Kozlowski wrote:
On Sun, Aug 16, 2026 at 11:05:41AM -0300, Maíra Canal wrote:
The BCM2835 PM block has exposed a reset line for the V3D block since
commit 670c672608a1 ("soc: bcm: bcm2835-pm: Add support for power domains
This is a reset provider driver, so not really relevant here. Driver
commit would be relevant if it was about consumer who implemented
undocumented ABI. I suggest to drop reference to driver and instead
describe the hardware.
Ack.
under a new binding."), which allows the GPU to be reset without
power-cycling its domain. Document it so that the vc4 driver can use it to
recover from a GPU hang.
Does every device have it? Cygnus as well?
I'm not familiar to the Cygnus hardware, only Raspberry Pi, so I'd
appreciate if one of the folks from Broadcom could help us with this
information.
However, just like the power domain, I added this property as optional
to accommodate the fact that the current Cygnus DT doesn't expose any
power domain or reset controller.
Best regards,
- Maíra
Best regards,
Krzysztof
