Re: [PATCH v2 0/5] Support CPR on MSM8916
On 09/26, Rafael J. Wysocki wrote:
> On Friday, September 18, 2015 05:52:04 PM Stephen Boyd wrote:
> > This patch series adds support for CPR on MSM8916. The first
> > patch exposes a corner voting API to the CPR driver so that we can
> > change the corner for the MX regulator. If possible I would
> > like to make this patch prettier, but I don't have any great
> > ideas right now. The next patch adds support to adjust voltages in the OPP
> > layer, and then hooks that up to cpufreq-dt so that we can adjust
> > the voltage in response to what CPR tells us to do. I've also thrown
> > in a patch to make RCU lockdep warnings go away, but I'm not sure if it's
> > right. There's still work to do.
> >
> > The final patch adds the CPR driver. This still has some rough edges. With
> > the OPPv2 bindings I'm thinking of moving the frequency tables into DT
> > and adding a custom vendor property to describe which fuse corner to use for
> > each frequency.
> >
> > Once you have these patches in place along with a CPU clock driver you
> > can eanble enable cpufreq-dt and add the cpufreq-dt device (maybe the
> > CPR driver should add the cpufreq-dt device?) and you'll see interrupts
> > for CPR and OPP voltage adjustments triggering CPUfreq to modify voltages.
> >
> > Andy Gross (1):
> > regulator: smd: Add floor and corner operations
> >
> > Stephen Boyd (4):
> > PM / OPP: Support adjusting OPP voltages at runtime
> > OPP: Allow notifiers to call dev_pm_opp_get_{voltage,freq} RCU-free
> > cpufreq-dt: Handle OPP voltage adjust events
> > power: avs: Add support for CPR (Core Power Reduction)
>
> From the responses so far I gather there will be a v3?
>
Yes. Definitely.
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Re: [PATCH v2 0/5] Support CPR on MSM8916
On Friday, September 18, 2015 05:52:04 PM Stephen Boyd wrote:
> This patch series adds support for CPR on MSM8916. The first
> patch exposes a corner voting API to the CPR driver so that we can
> change the corner for the MX regulator. If possible I would
> like to make this patch prettier, but I don't have any great
> ideas right now. The next patch adds support to adjust voltages in the OPP
> layer, and then hooks that up to cpufreq-dt so that we can adjust
> the voltage in response to what CPR tells us to do. I've also thrown
> in a patch to make RCU lockdep warnings go away, but I'm not sure if it's
> right. There's still work to do.
>
> The final patch adds the CPR driver. This still has some rough edges. With
> the OPPv2 bindings I'm thinking of moving the frequency tables into DT
> and adding a custom vendor property to describe which fuse corner to use for
> each frequency.
>
> Once you have these patches in place along with a CPU clock driver you
> can eanble enable cpufreq-dt and add the cpufreq-dt device (maybe the
> CPR driver should add the cpufreq-dt device?) and you'll see interrupts
> for CPR and OPP voltage adjustments triggering CPUfreq to modify voltages.
>
> Andy Gross (1):
> regulator: smd: Add floor and corner operations
>
> Stephen Boyd (4):
> PM / OPP: Support adjusting OPP voltages at runtime
> OPP: Allow notifiers to call dev_pm_opp_get_{voltage,freq} RCU-free
> cpufreq-dt: Handle OPP voltage adjust events
> power: avs: Add support for CPR (Core Power Reduction)
>From the responses so far I gather there will be a v3?
Thanks,
Rafael
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Re: [PATCH v2 0/5] Support CPR on MSM8916
On Fri, Sep 18, 2015 at 05:52:04PM -0700, Stephen Boyd wrote: > This patch series adds support for CPR on MSM8916. The first > patch exposes a corner voting API to the CPR driver so that we can You might want to expand on the acronym CPR since I'm reasonably sure that you don't in fact mean the normal expansion cardiopulmonary resuscitation. signature.asc Description: Digital signature
[PATCH v2 0/5] Support CPR on MSM8916
This patch series adds support for CPR on MSM8916. The first
patch exposes a corner voting API to the CPR driver so that we can
change the corner for the MX regulator. If possible I would
like to make this patch prettier, but I don't have any great
ideas right now. The next patch adds support to adjust voltages in the OPP
layer, and then hooks that up to cpufreq-dt so that we can adjust
the voltage in response to what CPR tells us to do. I've also thrown
in a patch to make RCU lockdep warnings go away, but I'm not sure if it's
right. There's still work to do.
The final patch adds the CPR driver. This still has some rough edges. With
the OPPv2 bindings I'm thinking of moving the frequency tables into DT
and adding a custom vendor property to describe which fuse corner to use for
each frequency.
Once you have these patches in place along with a CPU clock driver you
can eanble enable cpufreq-dt and add the cpufreq-dt device (maybe the
CPR driver should add the cpufreq-dt device?) and you'll see interrupts
for CPR and OPP voltage adjustments triggering CPUfreq to modify voltages.
Andy Gross (1):
regulator: smd: Add floor and corner operations
Stephen Boyd (4):
PM / OPP: Support adjusting OPP voltages at runtime
OPP: Allow notifiers to call dev_pm_opp_get_{voltage,freq} RCU-free
cpufreq-dt: Handle OPP voltage adjust events
power: avs: Add support for CPR (Core Power Reduction)
.../devicetree/bindings/power/avs/qcom,cpr.txt | 125 ++
drivers/base/power/opp.c | 96 +-
drivers/cpufreq/cpufreq-dt.c | 63 +-
drivers/power/avs/Kconfig | 15 +
drivers/power/avs/Makefile |1 +
drivers/power/avs/qcom-cpr.c | 1999
drivers/regulator/qcom_smd-regulator.c | 52 +
include/linux/pm_opp.h | 11 +
include/linux/regulator/qcom_smd-regulator.h | 30 +
9 files changed, 2378 insertions(+), 14 deletions(-)
create mode 100644 Documentation/devicetree/bindings/power/avs/qcom,cpr.txt
create mode 100644 drivers/power/avs/qcom-cpr.c
create mode 100644 include/linux/regulator/qcom_smd-regulator.h
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a Linux Foundation Collaborative Project
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