[PATCH v21 05/13] mfd: psci-mfd: Add PSCI MFD driver for cpuidle-psci-domain cell

[Bartosz Golaszewski]

On Mon, 27 Apr 2026 19:34:45 +0200, Shivendra Pratap
<shivendra.pratap at oss.qualcomm.com> said:
> PSCI has multiple kernel consumers, such as cpuidle-psci-domain.
> Currently, both the PSCI core driver and cpuidle-psci-domain bind
> directly to the same PSCI node "arm,psci-1.0". Additional consumers, if
> introduced, would also need to bind in the same way, leading to several
> drivers attached to a single device node.
>
> Introduce a PSCI MFD driver that binds to "arm,psci-1.0" and registers
> PSCI child cells. As the first user, register cpuidle-psci-domain as a
> child cell.
>
> Update cpuidle-psci-domain to probe as an MFD child and use the parent
> PSCI node for power-domain traversal.
>
> Signed-off-by: Shivendra Pratap <shivendra.pratap at oss.qualcomm.com>

Shamelessly taking credit for the idea. :) Looks short and sweet LGTM.

Suggested-by: Bartosz Golaszewski <bartosz.golaszewski at oss.qualcomm.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski at oss.qualcomm.com>