Re: [RFC PATCH 01/15] PM / devfreq: exynos: Add generic exynos bus frequency driver

[Anand Moon]

Hi Chanwoo,

On 26 November 2015 at 21:42, Chanwoo Choi <cwchoi00@xxxxxxxxx> wrote:
> On Thu, Nov 26, 2015 at 11:00 PM, MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx> wrote:
>> On Thu, Nov 26, 2015 at 10:47 PM, Chanwoo Choi <cw00.choi@xxxxxxxxxxx> wrote:
>>> This patch adds the generic exynos bus frequency driver for AMBA AXI bus
>>> of sub-blocks in exynos SoC with DEVFREQ framework. The Samsung Exynos SoC
>>> have the common architecture for bus between DRAM and sub-blocks in SoC.
>>> This driver can support the generic bus frequency driver for Exynos SoCs.
>>>
>>> In devicetree, Each bus block has a bus clock, regulator, operation-point
>>> and devfreq-event devices which measure the utilization of each bus block.
>>>
>>> Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
>>> ---
>>>  drivers/devfreq/Kconfig             |  15 ++
>>>  drivers/devfreq/Makefile            |   1 +
>>>  drivers/devfreq/exynos/Makefile     |   1 +
>>>  drivers/devfreq/exynos/exynos-bus.c | 443 ++++++++++++++++++++++++++++++++++++
>>>  4 files changed, 460 insertions(+)
>>>  create mode 100644 drivers/devfreq/exynos/exynos-bus.c
>>>
>>
>> Are we finally getting a common Exynos bus driver with full DT support?
>> (can this replace both Exynos4/5 drivers and support Exynos7 series?)
>
> Yes.
> This patch-set would support all Exynos SoCs for bus frequency driver.
> To make sure the support for Exynos7 series, I need to check the TRM
> document of Exynos7.  I think it is possible for support Exynos7.
>
> I'm going to test this driver on various Exynos-based board.
>
> Regards,
> Chanwoo Choi

Please do consider Exynos 542x series as well.

-Anand Moon
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