[PATCHv1 0/2] ARM: socfpga: Soft reset, hotplug and device tree clocks

[dinh.linux@gmail.com (Dinh Nguyen)]

Hi Rob,

On 03/13/2013 08:04 PM, Rob Herring wrote:
> Dinh,
> 
> On 03/13/2013 04:55 PM, dinguyen at altera.com wrote:
>> From: Dinh Nguyen <dinguyen@altera.com>
>>
>> Hi Arnd/Olof,
>>
>> Just 2 patches for mach-socfpga:
>>
>> 0001: ARM: socfpga: Enable hotplug and soft reset
>> 	- Able to hotplug CPU1 by putting it into reset and bringing back online.
>>
> 
> Have you seen the discussion on PSCI? There's an ARM doc on it and
> Linaro session from last week. Is there a possibility you can use that?
> You would need to be able to run in non-secure mode and implement smc calls.

I just briefly skimmed the ARM doc and Linaro slidedeck. It looks like
PSCI is already in the kernel, but I don't see any usage of it yet? I'll
try to use PSCI for our hotplug. Do you know where those opcodes for
cpu_on or cpu_off came from?

Currently we are running in non-secure mode, but may have a requirement
to run in secure mode in other applications, so will PSCI still work for
that case?

Thanks,
Dinh
> 
> Rob
> 
> 
>> 0002: ARM: socfpga: Add clock entries into device tree
>> 	- Correctly use the clock framework with device tree entries.
>> 	- Based from clk-highbank.c
>> 	
>> Based on arm-soc/for-next.
>> 	
>> Thanks,
>> Dinh
>>
>> Dinh Nguyen (2):
>>   ARM: socfpga: Enable hotplug and soft reset
>>   ARM: socfpga: Add clock entries into device tree
>>
>>  .../bindings/arm/altera/socfpga-clk-manager.txt    |   11 ++
>>  .../devicetree/bindings/clock/altr_socfpga.txt     |   15 ++
>>  arch/arm/boot/dts/socfpga.dtsi                     |  154 +++++++++++++++++
>>  arch/arm/boot/dts/socfpga_cyclone5.dts             |    8 +
>>  arch/arm/boot/dts/socfpga_vt.dts                   |    8 +
>>  arch/arm/mach-socfpga/core.h                       |   17 ++
>>  arch/arm/mach-socfpga/platsmp.c                    |    9 +-
>>  arch/arm/mach-socfpga/socfpga.c                    |   16 +-
>>  drivers/clk/socfpga/clk.c                          |  174 +++++++++++++++++---
>>  9 files changed, 387 insertions(+), 25 deletions(-)
>>  create mode 100644 Documentation/devicetree/bindings/arm/altera/socfpga-clk-manager.txt
>>  create mode 100644 Documentation/devicetree/bindings/clock/altr_socfpga.txt
>>
>