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When the GPU is the only device attached to a single power domain, core genpd disable and enable it when gpu enter and leave runtime suspend. Some power-domain requires a sequence before disabled, and the reverse when enabled. Add GPU_PM_RT flag, and implement in panfrost_device_runtime_suspend/resume. Reviewed-by: Steven Price <steven.price@arm.com> Signed-off-by: Philippe Simons <simons.philippe@gmail.com> Signed-off-by: Steven Price <steven.price@arm.com> Link: https://lore.kernel.org/r/20250403055210.54486-2-simons.philippe@gmail.com