From: Tomasz Figa <t.figa@samsung.com>
To: Pankaj Dubey <pankaj.dubey@samsung.com>,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: kgene.kim@samsung.com, linux@arm.linux.org.uk,
vikas.sajjan@samsung.com, joshi@samsung.com, naushad@samsung.com,
thomas.ab@samsung.com, chow.kim@samsung.com
Subject: Re: [PATCH v5 4/5] ARM: EXYNOS: Add platform driver support for Exynos PMU
Date: Tue, 08 Jul 2014 16:14:59 +0200 [thread overview]
Message-ID: <53BBFCE3.4050806@samsung.com> (raw)
In-Reply-To: <001e01cf9820$18f29440$4ad7bcc0$@samsung.com>
On 05.07.2014 09:09, Pankaj Dubey wrote:
> On Monday, June 30, 2014 Tomasz Figa wrote:
>> On 25.06.2014 16:03, Pankaj Dubey wrote:
>>> +
>>> + if (pmu_context->pmu_data && pmu_context->pmu_data->pmu_init)
>>
>> In what conditions pmu_data will be NULL?
>>
>
> What if we want driver to be probed but no data has been given?
> If driver gets probed it still can act as syscon provider, and other IPs can
> access
> PMU registers, but PMU functionality itself will not be available, for same
> reason
> I have put a check for pmu_data in powerdown_conf also.
>
Is there any point in probing this driver just to register the syscon?
AFAIK if this driver errors out, the syscon platform driver will take
over and do what we want. That's why we have the second "syscon"
compatible string.
Best regards,
Tomasz
next prev parent reply other threads:[~2014-07-08 14:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-25 14:03 [PATCH v5 0/5] ARM: Exynos: PMU cleanup and refactoring for using DT Pankaj Dubey
2014-06-25 14:03 ` [PATCH v5 1/5] ARM: EXYNOS: Add support for mapping PMU base address via DT Pankaj Dubey
2014-06-30 16:11 ` Tomasz Figa
2014-07-05 6:31 ` Pankaj Dubey
2014-06-25 14:03 ` [PATCH v5 2/5] ARM: EXYNOS: Refactored code for using PMU " Pankaj Dubey
2014-06-30 16:19 ` Tomasz Figa
2014-07-05 6:34 ` Pankaj Dubey
2014-06-25 14:03 ` [PATCH v5 3/5] ARM: EXYNOS: Move "mach/map.h" inclusion from regs-pmu.h to platsmp.c Pankaj Dubey
2014-06-30 16:20 ` Tomasz Figa
2014-07-05 6:35 ` Pankaj Dubey
2014-06-25 14:03 ` [PATCH v5 4/5] ARM: EXYNOS: Add platform driver support for Exynos PMU Pankaj Dubey
2014-06-30 17:05 ` Tomasz Figa
2014-07-05 7:09 ` Pankaj Dubey
2014-07-08 14:14 ` Tomasz Figa [this message]
2014-06-25 14:03 ` [PATCH v5 5/5] ARM: EXYNOS: Move PMU specific definitions from common.h Pankaj Dubey
2014-06-30 17:15 ` Tomasz Figa
2014-07-05 7:10 ` Pankaj Dubey
2014-06-26 11:30 ` [PATCH v5 0/5] ARM: Exynos: PMU cleanup and refactoring for using DT Vikas Sajjan
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