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Wed, 27 Nov 2019 02:29:16 -0800 (PST) From: Ulf Hansson To: Sudeep Holla , Lorenzo Pieralisi , Rob Herring , linux-pm@vger.kernel.org Subject: [PATCH v3 00/13] cpuidle: psci: Support hierarchical CPU arrangement Date: Wed, 27 Nov 2019 11:29:01 +0100 Message-Id: <20191127102914.18729-1-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191127_022920_227378_C8FE42C2 X-CRM114-Status: GOOD ( 16.32 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:143 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Ulf Hansson , Kevin Hilman , Stephen Boyd , linux-arm-msm@vger.kernel.org, Daniel Lezcano , "Rafael J . Wysocki" , Lina Iyer , Bjorn Andersson , Andy Gross , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Rob, Lorenzo, Sudeep - apologize for sending a new version in the middle of the merge window, but I thought I might as well get this out, especially since there are only a very small amount of updates. Please review, whenever you find some time for it. Kind regards Ulf Hansson Changes in v3: - Take one step further to completely avoid executing any OSI specific code from the ->enter() callback, while operating in the default PSCI Platform Coordinated mode. - Update example for the PSCI DT bindings to make it compile with "make dt_binding_check" Changes in v2: - Avoid to affect the non-OSI path with specific changes for OSI. This forced me to re-order the series and a caused more or less minor changes to most of the patches. - Updated the DT bindings for PSCI to clarify and to include the "psci" name of the PM domain to attach to. - Replaced patch1 with another patch from Sudeep, solving the same problem, but in a different way. This series enables initial support for hierarchical CPU arrangement, managed by PSCI and its corresponding cpuidle driver. It's based on using the generic PM domain (genpd), which nowadays also supports devices belonging to CPUs. The last DTS patch enables the hierarchical topology to be used for the Qcom 410c Dragonboard, which supports the PSCI OS-initiated mode. More detailed background can be found from previous submissions [1]. The series is also available at: git.linaro.org/people/ulf.hansson/linux-pm.git next Kind regards Ulf Hansson [1] https://lwn.net/Articles/788306/ Lina Iyer (1): cpuidle: dt: Support hierarchical CPU idle states Sudeep Holla (1): cpuidle: psci: Align psci_power_state count with idle state count Ulf Hansson (11): dt: psci: Update DT bindings to support hierarchical PSCI states firmware: psci: Export functions to manage the OSI mode of: base: Add of_get_cpu_state_node() to get idle states for a CPU node cpuidle: psci: Simplify OF parsing of CPU idle state nodes cpuidle: psci: Support hierarchical CPU idle states cpuidle: psci: Add a helper to attach a CPU to its PM domain cpuidle: psci: Attach CPU devices to their PM domains cpuidle: psci: Prepare to use OS initiated suspend mode via PM domains cpuidle: psci: Manage runtime PM in the idle path cpuidle: psci: Add support for PM domains by using genpd arm64: dts: Convert to the hierarchical CPU topology layout for MSM8916 .../devicetree/bindings/arm/cpus.yaml | 15 + .../devicetree/bindings/arm/psci.yaml | 104 ++++++ arch/arm64/boot/dts/qcom/msm8916.dtsi | 57 +++- drivers/cpuidle/Makefile | 4 +- drivers/cpuidle/cpuidle-psci-domain.c | 302 ++++++++++++++++++ drivers/cpuidle/cpuidle-psci.c | 114 +++++-- drivers/cpuidle/cpuidle-psci.h | 17 + drivers/cpuidle/dt_idle_states.c | 5 +- drivers/firmware/psci/psci.c | 18 +- drivers/of/base.c | 36 +++ include/linux/of.h | 8 + include/linux/psci.h | 2 + 12 files changed, 647 insertions(+), 35 deletions(-) create mode 100644 drivers/cpuidle/cpuidle-psci-domain.c create mode 100644 drivers/cpuidle/cpuidle-psci.h