[PATCHv1 0/2] ARM: socfpga: Soft reset, hotplug and device tree clocks
Dinh Nguyen
dinh.linux at gmail.com
Thu Mar 14 09:39:25 EDT 2013
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 at 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
>>
>
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