From: Peter Ujfalusi <peter.ujfalusi@nokia.com>
To: "ext ABRAHAM, KISHON VIJAY" <kishon@ti.com>
Cc: linux-omap@vger.kernel.org, paul@pwsan.com,
khilman@deeprootsystems.com, p-basak2@ti.com, b-cousson@ti.com
Subject: Re: [PATCH v1 09/10] OMAP: McBSP: use omap_device APIs to modify SYSCONFIG
Date: Tue, 04 Jan 2011 11:46:59 +0200 [thread overview]
Message-ID: <4D22EC93.70008@nokia.com> (raw)
In-Reply-To: <AANLkTinW4uEW1qOjBfXiwayi1mr=iygohxX5mtr9KwBo@mail.gmail.com>
On 01/04/11 11:26, ext ABRAHAM, KISHON VIJAY wrote:
>> 1. How we select the WAKE events from McBSP?
>> We need XRDYEN, and RRDYEN bits for wake (in WAKEUPEN register),
>
> Ahh.. Ok. This setting still need to be present. Will add it in my
> next patch version.
> Thanks.
Thanks.
>> and
>> also we need to enable the WAKEUP in SYSCON register.
>
> Setting of WAKEUPEN will be taken care by pm_runtime_get_sync()
I need to get more familiar with the hwmod things ;)
>> 2. How we are configuring the CLOCKACTIVITY field in SYSCON register?
>
>
> It's been set in the hwmod database. In [1], there is a field
> .clockact in
> omap_hwmod_class_sysconfig where we set the clock activity to 2.
> Whenever
> we do a get_sync, CLOCKACTIVITY field in SYSCON register will be set
> to the value present in .clockact field.
>
> [1] https://patchwork.kernel.org/patch/423731/
I see. Is there a way to change the CLOCKACTIVITY field in certain cases?
What I mean is:
the 0x2 means that ICLK can be switched off, PRCM FCLK must kept on
I have a setup, where I can switch off the FCLK for a period of time (so
PER domain can hit retention). For this I'll need to have 0x0 in
CLOCKACTIVITY.
I'm not sure what are the side effects if we always use 0x0, but IMHO
that shall be fine as well.
--
Péter
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next prev parent reply other threads:[~2011-01-04 9:47 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-21 7:40 [PATCH v1 01/10] OMAP: hwmod: Add member 'name' to omap_hwmod_addr_space struct Kishon Vijay Abraham I
2010-12-21 7:40 ` [PATCH v1 02/10] OMAP: McBSP: Convert McBSP to platform device model Kishon Vijay Abraham I
2010-12-23 9:29 ` Varadarajan, Charulatha
2010-12-21 7:40 ` [PATCH v1 03/10] OMAP2420: hwmod data: Add McBSP Kishon Vijay Abraham I
2010-12-21 7:40 ` [PATCH v1 04/10] OMAP2430: " Kishon Vijay Abraham I
2010-12-21 7:40 ` [PATCH v1 05/10] OMAP3: " Kishon Vijay Abraham I
2010-12-21 7:40 ` [PATCH v1 06/10] OMAP4: " Kishon Vijay Abraham I
2010-12-21 7:40 ` [PATCH v1 07/10] OMAP3: hwmod: add dev_attr for McBSP sidetone Kishon Vijay Abraham I
2010-12-21 7:40 ` [PATCH v1 08/10] OMAP2+: McBSP: hwmod adaptation for McBSP Kishon Vijay Abraham I
2010-12-21 7:40 ` [PATCH v1 09/10] OMAP: McBSP: use omap_device APIs to modify SYSCONFIG Kishon Vijay Abraham I
2011-01-04 7:35 ` Peter Ujfalusi
2011-01-04 9:34 ` ABRAHAM, KISHON VIJAY
[not found] ` <AANLkTinW4uEW1qOjBfXiwayi1mr=iygohxX5mtr9KwBo@mail.gmail.com>
2011-01-04 9:46 ` Peter Ujfalusi [this message]
2010-12-21 7:40 ` [PATCH v1 10/10] OMAP: McBSP: Add pm runtime support Kishon Vijay Abraham I
2010-12-21 7:40 ` [PATCH v1 00/10] OMAP: McBSP: hwmod adaptation and runtime conversion Kishon Vijay Abraham I
2010-12-22 15:42 ` Jarkko Nikula
2010-12-23 9:21 ` Varadarajan, Charulatha
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