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From: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
To: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Kamil Konieczny <k.konieczny@partner.samsung.com>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Kukjin Kim <kgene@kernel.org>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Mark Rutland <mark.rutland@arm.com>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Nishanth Menon <nm@ti.com>, Rob Herring <robh+dt@kernel.org>,
	Stephen Boyd <sboyd@kernel.org>,
	Viresh Kumar <vireshk@kernel.org>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-samsung-soc@vger.kernel.org
Subject: Re: [PATCH v2 2/4] devfreq: exynos-bus: convert to use dev_pm_opp_set_rate()
Date: Tue, 16 Jul 2019 13:56:28 +0200
Message-ID: <e5570b67-8326-c9ba-fb1a-488cb5673410@samsung.com> (raw)
In-Reply-To: <1a9e5752-bc2b-3b08-a36b-fc02ca51764c@samsung.com>


On 7/16/19 1:39 PM, Bartlomiej Zolnierkiewicz wrote:
> 
> On 7/16/19 1:26 PM, Chanwoo Choi wrote:

[...]

>>> Doesn't seem to be needed, care to explain it more?
>>
>> In order to fix the sequence problem between clock and regulator
>> with dev_pm_opp_set_regualtor() and want to keep two functions
>> (exynos_bus_parent_parse_of() and exynos_bus_parse_of()),
>> have to change the call order as following and then modify
>> the exception handling code when error happen.
>>
>> 	node = of_parse_phandle(dev->of_node, "devfreq", 0);                    
>> 	if (node) {                                                             
>> 		of_node_put(node);                                              
>> 		passive = true
>> 	}
>>
>> 	if (!passive)	
>> 		exynos_bus_parent_parse_of()
>> 			dev_pm_opp_set_regulator
>>
>> 	exynos_bus_parse_of()
> 
> OK. This seems like a solution.

PS Thanks for explaining this in detail.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

  reply index

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20190715120430eucas1p1dd216e552403899e614845295373e467@eucas1p1.samsung.com>
2019-07-15 12:04 ` [PATCH v2 0/4] add coupled regulators for Exynos5422/5800 Kamil Konieczny
     [not found]   ` <CGME20190715120430eucas1p19dddcc93756e6a110d3476229f9428b3@eucas1p1.samsung.com>
2019-07-15 12:04     ` [PATCH v2 1/4] opp: core: add regulators enable and disable Kamil Konieczny
2019-07-16  4:03       ` Chanwoo Choi
2019-07-17 14:12         ` Kamil Konieczny
2019-07-16 10:05       ` Viresh Kumar
2019-07-17 14:14         ` Kamil Konieczny
     [not found]   ` <CGME20190715120431eucas1p215eae81d0ca772d7e2a22a803669068a@eucas1p2.samsung.com>
2019-07-15 12:04     ` [PATCH v2 2/4] devfreq: exynos-bus: convert to use dev_pm_opp_set_rate() Kamil Konieczny
2019-07-16  3:56       ` Chanwoo Choi
2019-07-16 10:13         ` Bartlomiej Zolnierkiewicz
2019-07-16 10:33           ` Chanwoo Choi
2019-07-16 10:59             ` Bartlomiej Zolnierkiewicz
2019-07-16 11:26               ` Chanwoo Choi
2019-07-16 11:39                 ` Bartlomiej Zolnierkiewicz
2019-07-16 11:56                   ` Bartlomiej Zolnierkiewicz [this message]
     [not found]   ` <CGME20190715120432eucas1p1b32d72d239420b861bf8596d4e8a053d@eucas1p1.samsung.com>
2019-07-15 12:04     ` [PATCH v2 3/4] ARM: dts: exynos: add initial data for coupled regulators for Exynos5422/5800 Kamil Konieczny
2019-07-16  9:00       ` Chanwoo Choi
2019-07-16  9:22       ` Krzysztof Kozlowski
2019-07-16 10:30         ` Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20190715120433eucas1p26681c5c2d87423253b651d88446c538c@eucas1p2.samsung.com>
2019-07-15 12:04     ` [PATCH v2 4/4] dt-bindings: devfreq: exynos-bus: remove unused property Kamil Konieczny
2019-07-16  8:54       ` Chanwoo Choi

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