linux-kernel - Re: [PATCH 2/7] Documentation: bindings: Add Exynos5433 PMU compatible

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Message-id: <57B2C9EE.6000005@samsung.com>
Date:	Tue, 16 Aug 2016 17:08:14 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>, kgene@...nel.org,
	robh+dt@...nel.org, mark.rutland@....com, catalin.marinas@....com,
	will.deacon@....com, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	krzk@...nel.org, jh80.chung@...sung.com, sw0312.kim@...sung.com,
	jy0922.shim@...sung.com, inki.dae@...sung.com,
	jonghwa3.lee@...sung.com, beomho.seo@...sung.com,
	jaewon02.kim@...sung.com, human.hwang@...sung.com,
	ideal.song@...sung.com, ingi2.kim@...sung.com,
	m.szyprowski@...sung.com, a.hajda@...sung.com,
	s.nawrocki@...sung.com, chanwoo@...nel.org
Subject: Re: [PATCH 2/7] Documentation: bindings: Add Exynos5433 PMU compatible

Hi Krzysztof,

On 2016년 08월 16일 16:40, Krzysztof Kozlowski wrote:
> On 08/16/2016 08:27 AM, Chanwoo Choi wrote:
>> This patch adds the exynos5433 PMU compatible to support the access
>> of PMU (Power Management Unit) block.
>>
>> Cc: Kukjin Kim <kgene@...nel.org>
>> Cc: Krzysztof Kozlowski <k.kozlowski@...sung.com>
>> Cc: Rob Herring <robh+dt@...nel.org>
>> Cc: Mark Rutland <mark.rutland@....com>
>> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
>> ---
>>  Documentation/devicetree/bindings/arm/samsung/pmu.txt | 1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/Documentation/devicetree/bindings/arm/samsung/pmu.txt b/Documentation/devicetree/bindings/arm/samsung/pmu.txt
>> index 2d6356d8daf4..bf5fc59a6938 100644
>> --- a/Documentation/devicetree/bindings/arm/samsung/pmu.txt
>> +++ b/Documentation/devicetree/bindings/arm/samsung/pmu.txt
>> @@ -10,6 +10,7 @@ Properties:
>>  		   - "samsung,exynos5260-pmu" - for Exynos5260 SoC.
>>  		   - "samsung,exynos5410-pmu" - for Exynos5410 SoC,
>>  		   - "samsung,exynos5420-pmu" - for Exynos5420 SoC.
>> +		   - "samsung,exynos5433-pmu" - for Exynos5433 SoC.
>>  		   - "samsung,exynos7-pmu" - for Exynos7 SoC.
>>  		second value must be always "syscon".
> 
> Is there any plan to add Exynos5433 support to
> drivers/soc/samsung/exynos-pmu.c? If no... then exynos7-pmu might be
> reused. If yes, then this makes sense.

Yes.
I'll support the suspend-to-ram for Exynos5433. But it is not right now.
because the current kernel support the suspend-to-ram for only 32-bit Exynos.
and the pm/suspend code are included in in arch/arm/mach-exynos/.

To support the suspend-to-ram for 64bit Exynos, I need a lot of time
to support the 64-bit suspend.

Regards,
Chanwoo Choi