mbox series

[v3,0/6] Add CPU clock support for Armada 7K/8K

Message ID 20181216094147.6468-1-gregory.clement@bootlin.com (mailing list archive)
Headers show
Series Add CPU clock support for Armada 7K/8K | expand

Message

Gregory CLEMENT Dec. 16, 2018, 9:41 a.m. UTC
Hello,

This is the third version of a series allowing to manage the cpu
clock for Armada 7K/8K. For these SoCs, the CPUs share the same clock
by cluster, so actually the clock management is done at cluster level.

As for the other Armada 7K/8K clocks it is possible to have multiple
AP so here again we need to have unique name: the purpose of the second
patch is to share a common code which will be used in 3 drivers.

The last 2 patch enable the driver at dt and platform level and will
be applied through the mvebu subsystem.

Changelog v2->v3:
 - Add back the first patch documenting the binding

Changelog v1->v2:
 - Header cleanup
 - Use unsigned int instead of it for cluster member of the ap_cpu_clk struct
 - Use clk_hw instead of clk
 - Use regmap_read_poll_timeout
 - Use for_each_of_cpu_node
 - Remove unnecessary WARN_ON()
 - Remove headers from armada_ap_cp_helper.h
 - Few other minor cleanup

Gregory CLEMENT (6):
  dt-bindings: ap806: add the cluster clock node in the syscon file
  clk: mvebu: add helper file for Armada AP and CP clocks
  clk: mvebu: add CPU clock driver for Armada 7K/8K
  clk: mvebu: ap806: Fix clock name for the cluster
  arm64: marvell: enable the  Armada 7K/8K CPU clk driver
  arm64: dts: marvell: Add cpu clock node on Armada 7K/8K

 .../arm/marvell/ap806-system-controller.txt   |  22 ++
 arch/arm64/Kconfig.platforms                  |   1 +
 .../boot/dts/marvell/armada-ap806-quad.dtsi   |   4 +
 arch/arm64/boot/dts/marvell/armada-ap806.dtsi |   6 +
 drivers/clk/mvebu/Kconfig                     |   8 +
 drivers/clk/mvebu/Makefile                    |   2 +
 drivers/clk/mvebu/ap-cpu-clk.c                | 259 ++++++++++++++++++
 drivers/clk/mvebu/ap806-system-controller.c   |  24 +-
 drivers/clk/mvebu/armada_ap_cp_helper.c       |  30 ++
 drivers/clk/mvebu/armada_ap_cp_helper.h       |  11 +
 drivers/clk/mvebu/cp110-system-controller.c   |  32 +--
 11 files changed, 357 insertions(+), 42 deletions(-)
 create mode 100644 drivers/clk/mvebu/ap-cpu-clk.c
 create mode 100644 drivers/clk/mvebu/armada_ap_cp_helper.c
 create mode 100644 drivers/clk/mvebu/armada_ap_cp_helper.h

Comments

Gregory CLEMENT Jan. 10, 2019, 4:16 p.m. UTC | #1
Hi Stephen,
 
 On dim., déc. 16 2018, Gregory CLEMENT <gregory.clement@bootlin.com> wrote:

> Hello,
>
> This is the third version of a series allowing to manage the cpu
> clock for Armada 7K/8K. For these SoCs, the CPUs share the same clock
> by cluster, so actually the clock management is done at cluster level.
>
> As for the other Armada 7K/8K clocks it is possible to have multiple
> AP so here again we need to have unique name: the purpose of the second
> patch is to share a common code which will be used in 3 drivers.
>
> The last 2 patch enable the driver at dt and platform level and will
> be applied through the mvebu subsystem.

What is the status of this series?

The only comments I had was from Rob about the binding and I answered
them 3 weeks ago. Do you have any other comments? Do you expect a rebase
of this series on v5.0-rc1?

Thanks,

Gregory

>
> Changelog v2->v3:
>  - Add back the first patch documenting the binding
>
> Changelog v1->v2:
>  - Header cleanup
>  - Use unsigned int instead of it for cluster member of the ap_cpu_clk struct
>  - Use clk_hw instead of clk
>  - Use regmap_read_poll_timeout
>  - Use for_each_of_cpu_node
>  - Remove unnecessary WARN_ON()
>  - Remove headers from armada_ap_cp_helper.h
>  - Few other minor cleanup
>
> Gregory CLEMENT (6):
>   dt-bindings: ap806: add the cluster clock node in the syscon file
>   clk: mvebu: add helper file for Armada AP and CP clocks
>   clk: mvebu: add CPU clock driver for Armada 7K/8K
>   clk: mvebu: ap806: Fix clock name for the cluster
>   arm64: marvell: enable the  Armada 7K/8K CPU clk driver
>   arm64: dts: marvell: Add cpu clock node on Armada 7K/8K
>
>  .../arm/marvell/ap806-system-controller.txt   |  22 ++
>  arch/arm64/Kconfig.platforms                  |   1 +
>  .../boot/dts/marvell/armada-ap806-quad.dtsi   |   4 +
>  arch/arm64/boot/dts/marvell/armada-ap806.dtsi |   6 +
>  drivers/clk/mvebu/Kconfig                     |   8 +
>  drivers/clk/mvebu/Makefile                    |   2 +
>  drivers/clk/mvebu/ap-cpu-clk.c                | 259 ++++++++++++++++++
>  drivers/clk/mvebu/ap806-system-controller.c   |  24 +-
>  drivers/clk/mvebu/armada_ap_cp_helper.c       |  30 ++
>  drivers/clk/mvebu/armada_ap_cp_helper.h       |  11 +
>  drivers/clk/mvebu/cp110-system-controller.c   |  32 +--
>  11 files changed, 357 insertions(+), 42 deletions(-)
>  create mode 100644 drivers/clk/mvebu/ap-cpu-clk.c
>  create mode 100644 drivers/clk/mvebu/armada_ap_cp_helper.c
>  create mode 100644 drivers/clk/mvebu/armada_ap_cp_helper.h
>
> -- 
> 2.19.2
>
Stephen Boyd Jan. 10, 2019, 4:27 p.m. UTC | #2
Quoting Gregory CLEMENT (2019-01-10 08:16:22)
> Hi Stephen,
>  
>  On dim., déc. 16 2018, Gregory CLEMENT <gregory.clement@bootlin.com> wrote:
> 
> > Hello,
> >
> > This is the third version of a series allowing to manage the cpu
> > clock for Armada 7K/8K. For these SoCs, the CPUs share the same clock
> > by cluster, so actually the clock management is done at cluster level.
> >
> > As for the other Armada 7K/8K clocks it is possible to have multiple
> > AP so here again we need to have unique name: the purpose of the second
> > patch is to share a common code which will be used in 3 drivers.
> >
> > The last 2 patch enable the driver at dt and platform level and will
> > be applied through the mvebu subsystem.
> 
> What is the status of this series?
> 
> The only comments I had was from Rob about the binding and I answered
> them 3 weeks ago. Do you have any other comments? Do you expect a rebase
> of this series on v5.0-rc1?
> 

I'm waiting for Rob. I think the binding is not proper so presumably you
will figure out what Rob wants and then change the code accordingly and
resend?
Gregory CLEMENT Jan. 10, 2019, 4:36 p.m. UTC | #3
Hi Stephen,
 
 On jeu., janv. 10 2019, Stephen Boyd <sboyd@kernel.org> wrote:

> Quoting Gregory CLEMENT (2019-01-10 08:16:22)
>> Hi Stephen,
>>  
>>  On dim., déc. 16 2018, Gregory CLEMENT <gregory.clement@bootlin.com> wrote:
>> 
>> > Hello,
>> >
>> > This is the third version of a series allowing to manage the cpu
>> > clock for Armada 7K/8K. For these SoCs, the CPUs share the same clock
>> > by cluster, so actually the clock management is done at cluster level.
>> >
>> > As for the other Armada 7K/8K clocks it is possible to have multiple
>> > AP so here again we need to have unique name: the purpose of the second
>> > patch is to share a common code which will be used in 3 drivers.
>> >
>> > The last 2 patch enable the driver at dt and platform level and will
>> > be applied through the mvebu subsystem.
>> 
>> What is the status of this series?
>> 
>> The only comments I had was from Rob about the binding and I answered
>> them 3 weeks ago. Do you have any other comments? Do you expect a rebase
>> of this series on v5.0-rc1?
>> 
>
> I'm waiting for Rob. I think the binding is not proper so presumably you
> will figure out what Rob wants and then change the code accordingly and
> resend?

Actually the binding describes properly the hardware we have and that
what I answered to Rob.

Gregory
Gregory CLEMENT Feb. 13, 2019, 8:57 a.m. UTC | #4
Hi Stephen,
 
 On jeu., janv. 10 2019, Gregory CLEMENT <gregory.clement@bootlin.com> wrote:

> Hi Stephen,
>  
>  On jeu., janv. 10 2019, Stephen Boyd <sboyd@kernel.org> wrote:
>
>> Quoting Gregory CLEMENT (2019-01-10 08:16:22)
>>> Hi Stephen,
>>>  
>>>  On dim., déc. 16 2018, Gregory CLEMENT <gregory.clement@bootlin.com> wrote:
>>> 
>>> > Hello,
>>> >
>>> > This is the third version of a series allowing to manage the cpu
>>> > clock for Armada 7K/8K. For these SoCs, the CPUs share the same clock
>>> > by cluster, so actually the clock management is done at cluster level.
>>> >
>>> > As for the other Armada 7K/8K clocks it is possible to have multiple
>>> > AP so here again we need to have unique name: the purpose of the second
>>> > patch is to share a common code which will be used in 3 drivers.
>>> >
>>> > The last 2 patch enable the driver at dt and platform level and will
>>> > be applied through the mvebu subsystem.
>>> 
>>> What is the status of this series?
>>> 
>>> The only comments I had was from Rob about the binding and I answered
>>> them 3 weeks ago. Do you have any other comments? Do you expect a rebase
>>> of this series on v5.0-rc1?
>>> 
>>
>> I'm waiting for Rob. I think the binding is not proper so presumably you
>> will figure out what Rob wants and then change the code accordingly and
>> resend?
>
> Actually the binding describes properly the hardware we have and that
> what I answered to Rob.

I pinged you about this series more than one month ago, and answered Rob
concerned 2 months ago! He didn't said anything about my comments so I
really think that the binding is OK and described the hardware we have.

So could you consider to apply this series?

Thanks,

Gregory


>
> Gregory
>
> -- 
> Gregory Clement, Bootlin
> Embedded Linux and Kernel engineering
> http://bootlin.com
>
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