| Message ID | 20200102160820.3572-1-ulf.hansson@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | [GIT,PULL] cpuidle/psci updates for v5.6 | expand |
Hi, On Thu, Jan 02, 2020 at 05:08:20PM +0100, Ulf Hansson wrote: > Hi SoC maintainers, > > Here's a PR with updates for v5.6 for cpuidle/psci for ARM/ARM64. > > The changes are somewhat sprinkled over a couple of different directories and > there is also dts update for MSM8916. The main changes are in drivers/cpuidle/, > which have been acked-by Rafael [1] and Sudeep. > > If you have any further questions, please just tell. What was the reason to bring in a dts change in this branch? Bindings should be stable such that old DT contents still works even if drivers are updated to support newer attributes, etc. -Olof
On Mon, 6 Jan 2020 at 18:31, Olof Johansson <olof@lixom.net> wrote: > > Hi, > > On Thu, Jan 02, 2020 at 05:08:20PM +0100, Ulf Hansson wrote: > > Hi SoC maintainers, > > > > Here's a PR with updates for v5.6 for cpuidle/psci for ARM/ARM64. > > > > The changes are somewhat sprinkled over a couple of different directories and > > there is also dts update for MSM8916. The main changes are in drivers/cpuidle/, > > which have been acked-by Rafael [1] and Sudeep. > > > > If you have any further questions, please just tell. > > What was the reason to bring in a dts change in this branch? Convenience. But I am not usually sending these PR, so feel free to tell me to change. > Bindings should be > stable such that old DT contents still works even if drivers are updated to > support newer attributes, etc. They already are. No worries! If you want to pick everything else but the DTS patch, that's fine by me. Do you want me to send a new PR? Kind regards Uffe
On Tue 07 Jan 11:28 PST 2020, Ulf Hansson wrote: > On Mon, 6 Jan 2020 at 18:31, Olof Johansson <olof@lixom.net> wrote: > > > > Hi, > > > > On Thu, Jan 02, 2020 at 05:08:20PM +0100, Ulf Hansson wrote: > > > Hi SoC maintainers, > > > > > > Here's a PR with updates for v5.6 for cpuidle/psci for ARM/ARM64. > > > > > > The changes are somewhat sprinkled over a couple of different directories and > > > there is also dts update for MSM8916. The main changes are in drivers/cpuidle/, > > > which have been acked-by Rafael [1] and Sudeep. > > > > > > If you have any further questions, please just tell. > > > > What was the reason to bring in a dts change in this branch? > > Convenience. But I am not usually sending these PR, so feel free to > tell me to change. > The dts files are typically moving a lot, so to reduce the risk of conflicts it's generally better if we take them through the qcom tree. > > Bindings should be > > stable such that old DT contents still works even if drivers are updated to > > support newer attributes, etc. > > They already are. No worries! > > If you want to pick everything else but the DTS patch, that's fine by me. > Generally, yes. > Do you want me to send a new PR? > But I'm happy with the dts patch and afaict there's nothing that this will conflict with. So you have my retroactive ack on the patch and lets stick with the current PR. Regards, Bjorn
On Tue, Jan 07, 2020 at 11:38:44AM -0800, Bjorn Andersson wrote: > On Tue 07 Jan 11:28 PST 2020, Ulf Hansson wrote: > > > On Mon, 6 Jan 2020 at 18:31, Olof Johansson <olof@lixom.net> wrote: > > > > > > Hi, > > > > > > On Thu, Jan 02, 2020 at 05:08:20PM +0100, Ulf Hansson wrote: > > > > Hi SoC maintainers, > > > > > > > > Here's a PR with updates for v5.6 for cpuidle/psci for ARM/ARM64. > > > > > > > > The changes are somewhat sprinkled over a couple of different directories and > > > > there is also dts update for MSM8916. The main changes are in drivers/cpuidle/, > > > > which have been acked-by Rafael [1] and Sudeep. > > > > > > > > If you have any further questions, please just tell. > > > > > > What was the reason to bring in a dts change in this branch? > > > > Convenience. But I am not usually sending these PR, so feel free to > > tell me to change. > > > > The dts files are typically moving a lot, so to reduce the risk of > conflicts it's generally better if we take them through the qcom tree. > > > > Bindings should be > > > stable such that old DT contents still works even if drivers are updated to > > > support newer attributes, etc. > > > > They already are. No worries! > > > > If you want to pick everything else but the DTS patch, that's fine by me. > > > > Generally, yes. > > > Do you want me to send a new PR? > > > > But I'm happy with the dts patch and afaict there's nothing that this > will conflict with. So you have my retroactive ack on the patch and > lets stick with the current PR. As long as there's no anticipated changes in DTS that's OK (which is why it's good to at least seek the ack from Bjorn in this case). There's one more issue with this pull request -- it's based on 5.5-rc4. We normally don't move to later -rcs for the base once things land (i.e. we're still at -rc2), since it just causes churn. I'll merge this now anyway, but in the future if you're unsure what to use as a base for your topic branches, look at our master branch to see where it's at. -Olof
Hi SoC maintainers, Here's a PR with updates for v5.6 for cpuidle/psci for ARM/ARM64. The changes are somewhat sprinkled over a couple of different directories and there is also dts update for MSM8916. The main changes are in drivers/cpuidle/, which have been acked-by Rafael [1] and Sudeep. If you have any further questions, please just tell. Please pull this in! Kind regards Ulf Hansson [1] https://lore.kernel.org/linux-arm-msm/CAJZ5v0gSY_Zg+sbBEfTaeBCiOf_L6JP4_-4tdpeFU0iCGJu3Nw@mail.gmail.com/ The following changes since commit fd6988496e79a6a4bdb514a4655d2920209eb85d: Linux 5.5-rc4 (2019-12-29 15:29:16 -0800) are available in the Git repository at: git://git.linaro.org/people/ulf.hansson/linux-pm.git tags/cpuidle_psci-v5.5-rc4 for you to fetch changes up to e37131556801dd76880914f0930fe0cbd1fd3223: arm64: dts: Convert to the hierarchical CPU topology layout for MSM8916 (2020-01-02 16:53:10 +0100) ---------------------------------------------------------------- Initial support for hierarchical CPU arrangement, managed by PSCI and its corresponding cpuidle driver. This support is based upon using the generic PM domain, which already supports devices belonging to CPUs. Finally, these is a DTS patch that enables the hierarchical topology to be used for the Qcom 410c Dragonboard, which supports the PSCI OS-initiated mode. ---------------------------------------------------------------- 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 (13): 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: Support CPU hotplug for the hierarchical model PM / Domains: Introduce a genpd OF helper that removes a subdomain cpuidle: psci: Add support for PM domains by using genpd arm64: dts: Convert to the hierarchical CPU topology layout for MSM8916 Documentation/devicetree/bindings/arm/cpus.yaml | 15 ++ Documentation/devicetree/bindings/arm/psci.yaml | 104 ++++++++ arch/arm64/boot/dts/qcom/msm8916.dtsi | 57 ++++- drivers/base/power/domain.c | 38 +++ drivers/cpuidle/Makefile | 4 +- drivers/cpuidle/cpuidle-psci-domain.c | 308 ++++++++++++++++++++++++ drivers/cpuidle/cpuidle-psci.c | 161 +++++++++++-- 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/cpuhotplug.h | 1 + include/linux/of.h | 8 + include/linux/pm_domain.h | 8 + include/linux/psci.h | 2 + 15 files changed, 747 insertions(+), 35 deletions(-) create mode 100644 drivers/cpuidle/cpuidle-psci-domain.c create mode 100644 drivers/cpuidle/cpuidle-psci.h