linux-kernel - [RFC PATCH v1 0/2] allow idle state to be found as deepest state for s2idle only

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Date:   Mon, 13 Apr 2020 15:00:12 +0800
From:   zhang.lyra@...il.com
To:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Chunyan Zhang <zhang.lyra@...il.com>,
        Chunyan Zhang <chunyan.zhang@...soc.com>
Subject: [RFC PATCH v1 0/2] allow idle state to be found as deepest state for s2idle only

From: Chunyan Zhang <chunyan.zhang@...soc.com>

We can add a new c-state to let system suspend enter into the same deep
state as s2ram when using s2idle, but we don't want other cases to use
that c-state, such as play_idle() which would find the deepest state by
invoking find_deepest_state() as well. This patch-set provides users
an option which can restrict c-state to be found as deepest state for
s2idle only.

Chunyan Zhang (2):
  cpuidle: allow idle state to be found as deepest state for s2idle only
  dt-bindings: arm: Add description to the new property for-s2idle-only

 Documentation/devicetree/bindings/arm/idle-states.yaml | 10 +++++++++-
 drivers/cpuidle/cpuidle.c                              |  3 ++-
 drivers/cpuidle/dt_idle_states.c                       |  3 +++
 include/linux/cpuidle.h                                |  1 +
 4 files changed, 15 insertions(+), 2 deletions(-)

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2.20.1