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

Message ID 20230724223057.1208122-1-quic_eberman@quicinc.com
Headers show
Series Implement a PSCI SYSTEM_RESET2 reboot-mode driver | expand

Message

Elliot Berman July 24, 2023, 10:30 p.m. UTC 
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@quicinc.com/

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