[PATCH v19 00/10] Implement PSCI reboot mode driver for PSCI resets

[Shivendra Pratap]

On 12/28/2025 10:50 PM, Shivendra Pratap wrote:
> Userspace should be able to initiate device reboots using the various
> PSCI SYSTEM_RESET and SYSTEM_RESET2 types defined by PSCI spec. This
> patch series introduces psci-reboot-mode driver that registers with
> reboot-mode framework to provide this functionality.
> 
> The PSCI system reset calls takes two arguments: reset_type and cookie.
> It defines predefined reset types, such as warm and cold reset, and
> vendor-specific reset types which are SoC vendor specific. To support
> these requirements, the reboot-mode framework is enhanced in two key
> ways:
> 1. 64-bit magic support: Extend reboot-mode to handle two 32-bit
> arguments (reset_type and cookie) by encoding them into a single 64-bit
> magic value.
> 2. Predefined modes: Add support for predefined reboot modes in the
> framework.
> 
> With these enhancements, the patch series enables:
>  - Warm reset and cold reset as predefined reboot modes.
>  - Vendor-specific resets exposed as tunables, configurable via the
>    SoC-specific device tree.
> 
> Together, these changes allow userspace to trigger all above PSCI resets
> from userspace.
> 

Hi Lorenzo,

Is this patch series now converging towards the design changes you
proposed in v17? We’d like to conclude the design so we can move it
towards closure.

Thanks,
Shivendra