Re: [PATCH v2 0/2] Add psci_sys_reset2 reboot modes for Qualcomm boards

[Loic Poulain]

Hi Anurag,

On Fri, May 29, 2026 at 4:29 PM Anurag Pateriya
<anurag.pateriya@xxxxxxxxxxxxxxxx> wrote:
>
> Adding PSCI SYSTEM_RESET2 reboot-modes for sm8750 and
> kaanapali based boards.

I would like to highlight that when Linux/EFI is enabled, which is a
common config, efi_reboot is used as the primary reboot path (see
machine_restart). As a result, the PSCI reboot hook is not invoked in
this scenario, assuming Qualcomm firmware provides EFI runtime
services. As a follow-up, it would therefore be beneficial to also
improve the EFI path to support such custom mode(s)...

Regards,
Loic



>
> These DT patches depend on PSCI SYSTEM_RESET2 support introduced in:
> https://lore.kernel.org/all/20260514-arm-psci-system_reset2-vendor-reboots-v22-0-28a5bde07483@xxxxxxxxxxxxxxxx/
>
> To: Bjorn Andersson <andersson@xxxxxxxxxx>
> To: Konrad Dybcio <konradybcio@xxxxxxxxxx>
> To: Rob Herring <robh@xxxxxxxxxx>
> To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
> To: Conor Dooley <conor+dt@xxxxxxxxxx>
> Cc: Shivendra Pratap <shivendra.pratap@xxxxxxxxxxxxxxxx>
> Cc: Lorenzo Pieralisi <lpieralisi@xxxxxxxxxx>
> Cc: linux-arm-msm@xxxxxxxxxxxxxxx
> Cc: devicetree@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
>
> Signed-off-by: Anurag Pateriya <anurag.pateriya@xxxxxxxxxxxxxxxx>
> ---
> Changes in v2:
> - Fixed subject lines.
> - Link to v1: https://lore.kernel.org/r/20260529-psci_sys_reset-dt-changes-for-pakala-v1-0-7c32161cf50b@xxxxxxxxxxxxxxxx
>
> ---
> Anurag Pateriya (1):
>       arm64: dts: qcom: sm8750: add reboot-mode support
>
> Xin Liu (1):
>       arm64: dts: qcom: kaanapali: add reboot-mode support
>
>  arch/arm64/boot/dts/qcom/kaanapali-mtp.dts | 7 +++++++
>  arch/arm64/boot/dts/qcom/kaanapali-qrd.dts | 7 +++++++
>  arch/arm64/boot/dts/qcom/kaanapali.dtsi    | 2 +-
>  arch/arm64/boot/dts/qcom/sm8750-mtp.dts    | 7 +++++++
>  arch/arm64/boot/dts/qcom/sm8750-qrd.dts    | 7 +++++++
>  arch/arm64/boot/dts/qcom/sm8750.dtsi       | 2 +-
>  6 files changed, 30 insertions(+), 2 deletions(-)
> ---
> base-commit: 6ee02bbf328be8a8586487e3af73b65a906cce58
> change-id: 20260529-psci_sys_reset-dt-changes-for-pakala-a09fc0e2a8a8
>
> Best regards,
> --
> Anurag Pateriya <anurag.pateriya@xxxxxxxxxxxxxxxx>
>
>