[PATCH v2 0/2] firmware: arm_scmi: add pm ops for scmi_power_control

Sudeep Holla sudeep.holla at arm.com
Tue Jul 8 08:26:03 PDT 2025


On Fri, 04 Jul 2025 11:09:34 +0800, Peng Fan wrote:
> Move information could be found in patch 2 commit log, hope it is clear
> 
> When testing on i.MX95, two consecutive suspend message send to the Linux
> agent, Linux will suspend(by the 1st suspend message) and wake up(by the
> 2nd suspend message).
> 
> The ARM SCMI spec does not allow for filtering of which messages an agent
> wants to get on the system power protocol. To i.MX95, as we use mailbox
> to receive message, and the mailbox supports wake up(interrupt is always
> enabled), so linux will also get a repeated suspend message. This will
> cause Linux to wake (and should then go back into suspend).
> 
> [...]

Applied to sudeep.holla/linux (for-linux-next), thanks!
(with some commit message changes and removal of #ifdef)

[1/2] firmware: arm_scmi: bus: Add pm ops
      https://git.kernel.org/sudeep.holla/c/76e65f7a0e0f
[2/2] firmware: arm_scmi: power_control: Set SCMI_SYSPOWER_IDLE in PM resume
      https://git.kernel.org/sudeep.holla/c/9a0658d3991e

--
Regards,
Sudeep




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