[RFC PATCH 0/4] Implement a PSCI SYSTEM_RESET2 reboot-mode driver

From: Elliot Berman
Date: Mon Jul 24 2023 - 18:31:32 EST


PSCI implements a restart notifier for architectural defined resets.
The SYSTEM_RESET2 call allows vendor firmware to define additional reset
types which could be mapped to the reboot reason.

Implement a driver to wire the reboot-mode framework to make vendor
SYSTEM_RESET2 calls on reboot.

This is a continuation from https://lore.kernel.org/all/4a679542-b48d-7e11-f33a-63535a5c68cb@xxxxxxxxxxx/

Elliot Berman (4):
power: reset: reboot-mode: Allow magic to be 0
power: reset: reboot-mode: Wire reboot_mode enum to magic
dt-bindings: power: reset: Document arm,psci-vendor-reset
power: reset: Implement a PSCI SYSTEM_RESET2 reboot-mode driver

.../power/reset/arm,psci-vendor-reset.yaml | 35 +++++++++++++
MAINTAINERS | 2 +
drivers/firmware/psci/psci.c | 9 ++++
drivers/power/reset/Kconfig | 9 ++++
drivers/power/reset/Makefile | 1 +
drivers/power/reset/psci-vendor-reset.c | 49 +++++++++++++++++++
drivers/power/reset/reboot-mode.c | 44 ++++++++++++-----
include/linux/psci.h | 2 +
8 files changed, 139 insertions(+), 12 deletions(-)
create mode 100644 Documentation/devicetree/bindings/power/reset/arm,psci-vendor-reset.yaml
create mode 100644 drivers/power/reset/psci-vendor-reset.c


base-commit: 6eaae198076080886b9e7d57f4ae06fa782f90ef
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2.41.0