From: Rajendra Nayak <rnayak-l0cyMroinI0@public.gmane.org>
To: Shawn Guo <shawn.guo-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: patches-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
lrg-l0cyMroinI0@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH v2 3/5] regulator: helper routine to extract regulator_init_data
Date: Tue, 25 Oct 2011 12:26:01 +0530 [thread overview]
Message-ID: <4EA65D81.6030109@ti.com> (raw)
In-Reply-To: <20111025065216.GD2119-+NayF8gZjK2ctlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
On Tuesday 25 October 2011 12:22 PM, Shawn Guo wrote:
> On Tue, Oct 25, 2011 at 11:30:19AM +0530, Rajendra Nayak wrote:
>> On Monday 24 October 2011 07:17 PM, Shawn Guo wrote:
>>> On Mon, Oct 24, 2011 at 02:43:58PM +0530, Rajendra Nayak wrote:
>>>> Case 2:
>>>> One device for all regulators:
>>>>
>>>> DT nodes look something like this
>>>>
>>>> regulators {
>>>> reg1: reg@1 {
>>>> ...
>>>> ...
>>>> };
>>>>
>>>> reg2: reg@2 {
>>>> ...
>>>> ...
>>>> };
>>>> };
>>>>
>>>> The regulator driver probes only one device and the dev->of_node
>>>> points to the "regulators" node above.
>>>
>>> The mc13892 example I put in the reply to Grant demonstrates that
>>> for some case, dev->of_node is NULL (devices are created by mfd core).
>>
>> In that case should you not be first converting the mfd driver to
>> register regulator devices using DT?
>
> The mc13892 mfd driver calls mfd_add_devices() to add device for
> mc13892 regulator driver. Are you suggesting that I should hack
> mfd_add_devices() to have device_node of 'regulators' attached?
> The mfd is not a bus like i2c and spi, so I'm not sure this is the
> right thing to do.
>
>> Thats what we did for OMAP, and hence we always have the of_node
>> populated when the regulator devices are probed.
>> See this patch from Benoit on how thats done for twl devices..
>> http://marc.info/?l=linux-omap&m=131489864814428&w=2
>>
> OMAP is "Case 1", and we are talking about "Case 2".
I don't see why it wouldn't work for "Case 2". The only difference
is in case of "Case 1", the dev->of_node would already point to
the right regulator node, like 'reg1', 'reg2' above.
In case of "Case 2", the dev->of_node would point to the 'regulators'
node instead, and the driver could then do a for_each_child_of_node()
to iterate over all its children to get 'reg1', 'reg2' etc.
>
WARNING: multiple messages have this Message-ID (diff)
From: rnayak@ti.com (Rajendra Nayak)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 3/5] regulator: helper routine to extract regulator_init_data
Date: Tue, 25 Oct 2011 12:26:01 +0530 [thread overview]
Message-ID: <4EA65D81.6030109@ti.com> (raw)
In-Reply-To: <20111025065216.GD2119@S2100-06.ap.freescale.net>
On Tuesday 25 October 2011 12:22 PM, Shawn Guo wrote:
> On Tue, Oct 25, 2011 at 11:30:19AM +0530, Rajendra Nayak wrote:
>> On Monday 24 October 2011 07:17 PM, Shawn Guo wrote:
>>> On Mon, Oct 24, 2011 at 02:43:58PM +0530, Rajendra Nayak wrote:
>>>> Case 2:
>>>> One device for all regulators:
>>>>
>>>> DT nodes look something like this
>>>>
>>>> regulators {
>>>> reg1: reg at 1 {
>>>> ...
>>>> ...
>>>> };
>>>>
>>>> reg2: reg at 2 {
>>>> ...
>>>> ...
>>>> };
>>>> };
>>>>
>>>> The regulator driver probes only one device and the dev->of_node
>>>> points to the "regulators" node above.
>>>
>>> The mc13892 example I put in the reply to Grant demonstrates that
>>> for some case, dev->of_node is NULL (devices are created by mfd core).
>>
>> In that case should you not be first converting the mfd driver to
>> register regulator devices using DT?
>
> The mc13892 mfd driver calls mfd_add_devices() to add device for
> mc13892 regulator driver. Are you suggesting that I should hack
> mfd_add_devices() to have device_node of 'regulators' attached?
> The mfd is not a bus like i2c and spi, so I'm not sure this is the
> right thing to do.
>
>> Thats what we did for OMAP, and hence we always have the of_node
>> populated when the regulator devices are probed.
>> See this patch from Benoit on how thats done for twl devices..
>> http://marc.info/?l=linux-omap&m=131489864814428&w=2
>>
> OMAP is "Case 1", and we are talking about "Case 2".
I don't see why it wouldn't work for "Case 2". The only difference
is in case of "Case 1", the dev->of_node would already point to
the right regulator node, like 'reg1', 'reg2' above.
In case of "Case 2", the dev->of_node would point to the 'regulators'
node instead, and the driver could then do a for_each_child_of_node()
to iterate over all its children to get 'reg1', 'reg2' etc.
>
WARNING: multiple messages have this Message-ID (diff)
From: Rajendra Nayak <rnayak@ti.com>
To: Shawn Guo <shawn.guo@freescale.com>
Cc: Grant Likely <grant.likely@secretlab.ca>,
broonie@opensource.wolfsonmicro.com, patches@linaro.org,
tony@atomide.com, devicetree-discuss@lists.ozlabs.org,
linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
lrg@ti.com, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 3/5] regulator: helper routine to extract regulator_init_data
Date: Tue, 25 Oct 2011 12:26:01 +0530 [thread overview]
Message-ID: <4EA65D81.6030109@ti.com> (raw)
In-Reply-To: <20111025065216.GD2119@S2100-06.ap.freescale.net>
On Tuesday 25 October 2011 12:22 PM, Shawn Guo wrote:
> On Tue, Oct 25, 2011 at 11:30:19AM +0530, Rajendra Nayak wrote:
>> On Monday 24 October 2011 07:17 PM, Shawn Guo wrote:
>>> On Mon, Oct 24, 2011 at 02:43:58PM +0530, Rajendra Nayak wrote:
>>>> Case 2:
>>>> One device for all regulators:
>>>>
>>>> DT nodes look something like this
>>>>
>>>> regulators {
>>>> reg1: reg@1 {
>>>> ...
>>>> ...
>>>> };
>>>>
>>>> reg2: reg@2 {
>>>> ...
>>>> ...
>>>> };
>>>> };
>>>>
>>>> The regulator driver probes only one device and the dev->of_node
>>>> points to the "regulators" node above.
>>>
>>> The mc13892 example I put in the reply to Grant demonstrates that
>>> for some case, dev->of_node is NULL (devices are created by mfd core).
>>
>> In that case should you not be first converting the mfd driver to
>> register regulator devices using DT?
>
> The mc13892 mfd driver calls mfd_add_devices() to add device for
> mc13892 regulator driver. Are you suggesting that I should hack
> mfd_add_devices() to have device_node of 'regulators' attached?
> The mfd is not a bus like i2c and spi, so I'm not sure this is the
> right thing to do.
>
>> Thats what we did for OMAP, and hence we always have the of_node
>> populated when the regulator devices are probed.
>> See this patch from Benoit on how thats done for twl devices..
>> http://marc.info/?l=linux-omap&m=131489864814428&w=2
>>
> OMAP is "Case 1", and we are talking about "Case 2".
I don't see why it wouldn't work for "Case 2". The only difference
is in case of "Case 1", the dev->of_node would already point to
the right regulator node, like 'reg1', 'reg2' above.
In case of "Case 2", the dev->of_node would point to the 'regulators'
node instead, and the driver could then do a for_each_child_of_node()
to iterate over all its children to get 'reg1', 'reg2' etc.
>
next prev parent reply other threads:[~2011-10-25 6:56 UTC|newest]
Thread overview: 238+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-10 16:19 [PATCH v2 0/5] Device tree support for regulators Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
[not found] ` <1318263578-7407-1-git-send-email-rnayak-l0cyMroinI0@public.gmane.org>
2011-10-10 16:19 ` [PATCH v2 1/5] regulator: twl: Remove hardcoded board constraints from driver Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-10 16:25 ` Mark Brown
2011-10-10 16:25 ` Mark Brown
2011-10-10 16:34 ` Rajendra Nayak
2011-10-10 16:34 ` Rajendra Nayak
2011-10-10 16:19 ` [PATCH v2 3/5] regulator: helper routine to extract regulator_init_data Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-10 17:22 ` Mark Brown
2011-10-10 17:22 ` Mark Brown
2011-10-10 17:22 ` Mark Brown
2011-10-11 5:59 ` Rajendra Nayak
2011-10-11 5:59 ` Rajendra Nayak
2011-10-13 18:38 ` Grant Likely
2011-10-13 18:38 ` Grant Likely
2011-10-13 18:38 ` Grant Likely
2011-10-13 22:12 ` Mark Brown
2011-10-13 22:12 ` Mark Brown
2011-10-13 22:12 ` Mark Brown
2011-10-13 18:40 ` Grant Likely
2011-10-13 18:40 ` Grant Likely
2011-10-13 18:40 ` Grant Likely
2011-10-16 14:55 ` Shawn Guo
2011-10-16 14:55 ` Shawn Guo
2011-10-16 14:55 ` Shawn Guo
2011-10-17 4:17 ` Rajendra Nayak
2011-10-17 4:17 ` Rajendra Nayak
2011-10-18 11:58 ` Shawn Guo
2011-10-18 11:58 ` Shawn Guo
2011-10-18 11:58 ` Shawn Guo
[not found] ` <20111018115836.GC30703-+NayF8gZjK2ctlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2011-10-18 16:00 ` Mark Brown
2011-10-18 16:00 ` Mark Brown
2011-10-18 16:00 ` Mark Brown
2011-10-19 5:33 ` Shawn Guo
2011-10-19 5:33 ` Shawn Guo
2011-10-19 5:33 ` Shawn Guo
[not found] ` <20111019053354.GB31162-+NayF8gZjK2ctlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2011-10-19 14:47 ` Mark Brown
2011-10-19 14:47 ` Mark Brown
2011-10-19 14:47 ` Mark Brown
2011-10-19 15:04 ` Shawn Guo
2011-10-19 15:04 ` Shawn Guo
2011-10-19 15:04 ` Shawn Guo
2011-10-19 15:10 ` Mark Brown
2011-10-19 15:10 ` Mark Brown
2011-10-20 3:42 ` Rajendra Nayak
2011-10-20 3:42 ` Rajendra Nayak
[not found] ` <4E9F9892.9070007-l0cyMroinI0@public.gmane.org>
2011-10-20 9:41 ` Mark Brown
2011-10-20 9:41 ` Mark Brown
2011-10-20 9:41 ` Mark Brown
[not found] ` <20111020094140.GK18713-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2011-10-20 12:10 ` Rajendra Nayak
2011-10-20 12:10 ` Rajendra Nayak
2011-10-20 12:10 ` Rajendra Nayak
2011-10-20 16:27 ` Tony Lindgren
2011-10-20 16:27 ` Tony Lindgren
2011-10-20 16:27 ` Tony Lindgren
[not found] ` <20111020162743.GB31337-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2011-10-20 16:40 ` Mark Brown
2011-10-20 16:40 ` Mark Brown
2011-10-20 16:40 ` Mark Brown
2011-10-20 17:05 ` Tony Lindgren
2011-10-20 17:05 ` Tony Lindgren
2011-10-20 17:22 ` Tony Lindgren
2011-10-20 17:22 ` Tony Lindgren
2011-10-20 19:57 ` Mark Brown
2011-10-20 19:57 ` Mark Brown
2011-10-20 20:10 ` Tony Lindgren
2011-10-20 20:10 ` Tony Lindgren
2011-10-20 21:42 ` Mark Brown
2011-10-20 21:42 ` Mark Brown
2011-10-20 22:09 ` Tony Lindgren
2011-10-20 22:09 ` Tony Lindgren
2011-10-24 9:07 ` Grant Likely
2011-10-24 9:07 ` Grant Likely
2011-10-20 19:56 ` Mark Brown
2011-10-20 19:56 ` Mark Brown
2011-10-18 13:20 ` Shawn Guo
2011-10-18 13:20 ` Shawn Guo
2011-10-18 13:20 ` Shawn Guo
2011-10-19 11:35 ` Rajendra Nayak
2011-10-19 11:35 ` Rajendra Nayak
2011-10-19 11:35 ` Rajendra Nayak
2011-10-19 14:42 ` Shawn Guo
2011-10-19 14:42 ` Shawn Guo
2011-10-19 14:42 ` Shawn Guo
2011-10-19 14:50 ` Mark Brown
2011-10-19 14:50 ` Mark Brown
2011-10-19 14:50 ` Mark Brown
[not found] ` <20111019144215.GA32007-+NayF8gZjK2ctlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2011-10-20 5:18 ` Rajendra Nayak
2011-10-20 5:18 ` Rajendra Nayak
2011-10-20 5:18 ` Rajendra Nayak
2011-10-20 6:14 ` Shawn Guo
2011-10-20 6:14 ` Shawn Guo
2011-10-20 6:14 ` Shawn Guo
2011-10-20 12:09 ` Rajendra Nayak
2011-10-20 12:09 ` Rajendra Nayak
2011-10-20 12:09 ` Rajendra Nayak
2011-10-21 8:23 ` Shawn Guo
2011-10-21 8:23 ` Shawn Guo
2011-10-21 8:23 ` Shawn Guo
2011-10-21 8:41 ` Rajendra Nayak
2011-10-21 8:41 ` Rajendra Nayak
2011-10-21 11:58 ` Shawn Guo
2011-10-21 11:58 ` Shawn Guo
2011-10-21 11:58 ` Shawn Guo
2011-10-24 6:02 ` Rajendra Nayak
2011-10-24 6:02 ` Rajendra Nayak
2011-10-24 7:34 ` Mark Brown
2011-10-24 7:34 ` Mark Brown
2011-10-24 8:17 ` Grant Likely
2011-10-24 8:17 ` Grant Likely
2011-10-24 8:17 ` Grant Likely
2011-10-24 8:53 ` Rajendra Nayak
2011-10-24 8:53 ` Rajendra Nayak
2011-10-24 8:53 ` Rajendra Nayak
2011-10-24 9:19 ` Mark Brown
2011-10-24 9:19 ` Mark Brown
2011-10-24 9:19 ` Mark Brown
2011-10-24 10:05 ` Rajendra Nayak
2011-10-24 10:05 ` Rajendra Nayak
2011-10-24 9:23 ` Shawn Guo
2011-10-24 9:23 ` Shawn Guo
2011-10-24 9:23 ` Shawn Guo
2011-10-24 9:02 ` Shawn Guo
2011-10-24 9:02 ` Shawn Guo
2011-10-24 9:02 ` Shawn Guo
2011-10-24 8:56 ` Rajendra Nayak
2011-10-24 8:56 ` Rajendra Nayak
2011-10-24 9:11 ` Shawn Guo
2011-10-24 9:11 ` Shawn Guo
2011-10-24 9:11 ` Shawn Guo
2011-10-24 9:13 ` Rajendra Nayak
2011-10-24 9:13 ` Rajendra Nayak
2011-10-24 13:47 ` Shawn Guo
2011-10-24 13:47 ` Shawn Guo
2011-10-24 13:47 ` Shawn Guo
2011-10-25 6:00 ` Rajendra Nayak
2011-10-25 6:00 ` Rajendra Nayak
2011-10-25 6:00 ` Rajendra Nayak
2011-10-25 6:26 ` Rajendra Nayak
2011-10-25 6:26 ` Rajendra Nayak
2011-10-25 6:26 ` Rajendra Nayak
2011-10-25 6:52 ` Shawn Guo
2011-10-25 6:52 ` Shawn Guo
2011-10-25 6:52 ` Shawn Guo
[not found] ` <20111025065216.GD2119-+NayF8gZjK2ctlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2011-10-25 6:56 ` Rajendra Nayak [this message]
2011-10-25 6:56 ` Rajendra Nayak
2011-10-25 6:56 ` Rajendra Nayak
2011-10-25 7:20 ` Shawn Guo
2011-10-25 7:20 ` Shawn Guo
2011-10-25 7:20 ` Shawn Guo
2011-10-25 7:13 ` Rajendra Nayak
2011-10-25 7:13 ` Rajendra Nayak
2011-10-25 7:13 ` Rajendra Nayak
2011-10-25 7:42 ` Shawn Guo
2011-10-25 7:42 ` Shawn Guo
2011-10-25 7:42 ` Shawn Guo
2011-10-24 11:35 ` Grant Likely
2011-10-24 11:35 ` Grant Likely
2011-10-24 9:24 ` Grant Likely
2011-10-24 9:24 ` Grant Likely
2011-10-24 9:24 ` Grant Likely
2011-10-24 9:39 ` Mark Brown
2011-10-24 9:39 ` Mark Brown
2011-10-24 13:04 ` Shawn Guo
2011-10-24 13:04 ` Shawn Guo
2011-10-24 13:04 ` Shawn Guo
2011-10-24 13:06 ` Mark Brown
2011-10-24 13:06 ` Mark Brown
2011-10-24 13:40 ` Shawn Guo
2011-10-24 13:40 ` Shawn Guo
2011-10-24 13:40 ` Shawn Guo
2011-10-24 13:49 ` Mark Brown
2011-10-24 13:49 ` Mark Brown
2011-10-24 14:47 ` Shawn Guo
2011-10-24 14:47 ` Shawn Guo
2011-10-24 14:47 ` Shawn Guo
[not found] ` <20111024144716.GG1755-+NayF8gZjK2ctlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2011-10-25 7:11 ` Mark Brown
2011-10-25 7:11 ` Mark Brown
2011-10-25 7:11 ` Mark Brown
2011-10-24 13:59 ` Grant Likely
2011-10-24 13:59 ` Grant Likely
2011-10-24 13:59 ` Grant Likely
2011-10-24 14:51 ` Shawn Guo
2011-10-24 14:51 ` Shawn Guo
2011-10-24 14:51 ` Shawn Guo
2011-10-24 14:56 ` Grant Likely
2011-10-24 14:56 ` Grant Likely
2011-10-24 15:51 ` Shawn Guo
2011-10-24 15:51 ` Shawn Guo
2011-10-24 15:51 ` Shawn Guo
2011-10-24 22:21 ` Grant Likely
2011-10-24 22:21 ` Grant Likely
2011-10-24 22:21 ` Grant Likely
2011-10-25 6:10 ` Rajendra Nayak
2011-10-25 6:10 ` Rajendra Nayak
2011-10-25 7:08 ` Shawn Guo
2011-10-25 7:08 ` Shawn Guo
2011-10-25 7:08 ` Shawn Guo
2011-10-25 7:01 ` Rajendra Nayak
2011-10-25 7:01 ` Rajendra Nayak
2011-10-25 7:01 ` Rajendra Nayak
2011-10-25 7:28 ` Shawn Guo
2011-10-25 7:28 ` Shawn Guo
2011-10-25 7:28 ` Shawn Guo
2011-10-10 16:19 ` [PATCH v2 4/5] regulator: adapt fixed regulator driver to dt Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-13 18:43 ` Grant Likely
2011-10-13 18:43 ` Grant Likely
2011-10-13 18:43 ` Grant Likely
2011-10-10 16:19 ` [PATCH v2 5/5] regulator: map consumer regulator based on device tree Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-10 17:35 ` Mark Brown
2011-10-10 17:35 ` Mark Brown
2011-10-10 17:35 ` Mark Brown
2011-10-11 5:49 ` Rajendra Nayak
2011-10-11 5:49 ` Rajendra Nayak
2011-10-11 7:08 ` Nayak, Rajendra
2011-10-11 7:08 ` Nayak, Rajendra
2011-10-11 7:08 ` Nayak, Rajendra
[not found] ` <CACYZBRFmLEY_f1UwJa5U9uj8+NVA-WfUVkiuW1yKrpwnrA_00A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-10-13 16:52 ` Mark Brown
2011-10-13 16:52 ` Mark Brown
2011-10-13 16:52 ` Mark Brown
2011-10-13 18:46 ` Grant Likely
2011-10-13 18:46 ` Grant Likely
2011-10-18 13:33 ` Shawn Guo
2011-10-18 13:33 ` Shawn Guo
2011-10-18 13:33 ` Shawn Guo
2011-10-10 16:19 ` [PATCH v2 2/5] dt: add empty dt helpers for non-dt build Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-10 16:19 ` Rajendra Nayak
2011-10-13 18:32 ` Grant Likely
2011-10-13 18:32 ` Grant Likely
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