From: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
To: Marek Szyprowski <m.szyprowski@samsung.com>,
linux-clk@vger.kernel.org, linux-pm@vger.kernel.org,
linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: Stephen Boyd <sboyd@codeaurora.org>,
Michael Turquette <mturquette@baylibre.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Inki Dae <inki.dae@samsung.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: Re: [PATCH v2 0/5] Add runtime PM support for clocks (on Exynos SoC example)
Date: Fri, 7 Oct 2016 13:17:39 +0200 [thread overview]
Message-ID: <57F78453.4090201@math.uni-bielefeld.de> (raw)
In-Reply-To: <c1cf1a1f-2d1f-7f35-3e3b-f2de90959a24@samsung.com>
Hey Marek,
Marek Szyprowski wrote:
> Hi Tobias,
>
>
> On 2016-10-06 20:05, Tobias Jakobi wrote:
>> Hello Marek,
>>
>> I'm using the patches from the v4.8-clocks-pm-v2 branch plus the ones
>> from the v4.8-clocks-pm-v2 branch on top of 4.8.0.
>>
>> I see some warnings on boot coming from driver core. It appears that the
>> warnings are actually meaningful, since IOMMUs stop working completly.
>> E.g. if I modprobe s5p-mfc later, firmware loading fails because
>> apparantly the IOMMU domain isn't online.
>>
>>> WARNING: CPU: 0 PID: 1 at drivers/base/core.c:356
>>> device_links_driver_bound+0x124/0x12c
>> I added some debug printk() to device_links_driver_bound(), to show the
>> link status. Apparantly it is always DEVICE_LINK_AVAILABLE.
>
> Please note that some additional patches are needed to get IOMMU working
> properly with both runtime-pm patches and deferred probe, which feature
> in turn is needed to get it working after adding clocks-pm changes. I
> will send such patch soon (as a new version of IOMMU deferred probe
> support patches were posted a few days ago).
I see. I thought that this was supposed to work with the patches in
v4.8-clocks-pm-v2.
I picked the patches in this range (endpoints included).
- arm: dma-mapping: Don't override dma_ops in arch_setup_dma_ops()
- clocks: exynos5433: add runtime pm support
And this range in v4.8-iommu-pm-v4>
- driver core: Add a wrapper around __device_release_driver()
- iommu/exynos: Add proper runtime pm support
Anyway, looking forward to test the new patchset.
- Tobias
>
>> (...)
>
> Best regards
prev parent reply other threads:[~2016-10-07 11:17 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20160919105545eucas1p1026e435bbaeb1f5c866a9abcdd051464@eucas1p1.samsung.com>
2016-09-19 10:55 ` [PATCH v2 0/5] Add runtime PM support for clocks (on Exynos SoC example) Marek Szyprowski
2016-09-19 10:55 ` [PATCH v2 1/5] clk: add support for runtime pm Marek Szyprowski
2016-10-07 10:07 ` Ulf Hansson
2016-10-10 11:21 ` Marek Szyprowski
2016-10-10 13:44 ` Ulf Hansson
2016-09-19 10:55 ` [PATCH v2 2/5] clock: samsung: " Marek Szyprowski
2016-09-19 10:55 ` [PATCH v2 3/5] clocks: exynos4x12: add runtime pm support for ISP clocks Marek Szyprowski
2016-09-19 10:55 ` [PATCH v2 4/5] ARM: dts: exynos: add support for ISP power domain to exynos4x12 clocks device Marek Szyprowski
2016-09-19 10:58 ` [PATCH v2 5/5] clocks: exynos5433: add runtime pm support Marek Szyprowski
2016-10-06 18:05 ` [PATCH v2 0/5] Add runtime PM support for clocks (on Exynos SoC example) Tobias Jakobi
2016-10-06 18:07 ` Tobias Jakobi
2016-10-07 9:12 ` Marek Szyprowski
2016-10-07 11:17 ` Tobias Jakobi [this message]
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