From: jon-hunter@ti•com (Jon Hunter)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v5 3/3] ARM: OMAP2+: onenand: prepare for gpmc driver migration
Date: Tue, 3 Jul 2012 10:10:03 -0500 [thread overview]
Message-ID: <4FF30B4B.8060203@ti.com> (raw)
In-Reply-To: <C8443D0743D26F4388EA172BF4E2A7A93E9A22B7@DBDE01.ent.ti.com>
On 07/02/2012 11:35 PM, Mohammed, Afzal wrote:
> Hi Jon,
>
> On Mon, Jul 02, 2012 at 22:59:03, Hunter, Jon wrote:
>> On 07/02/2012 04:43 AM, Mohammed, Afzal wrote:
>
>>> Not sure whether you are fine with fixing up this patch with added diff
>>>
>>> Assuming inferences so far is not wrong, right now this patch with the added diff
>>> would be perfectly fine.
>>>
>>> Problem would happen when we are at a stage to do gpmc reset using hwmod [seems
>>> miles to go before I sleep {or read gpmc hwmod reset} ;)]. If bootloader left
>>> onenand configured in sync mode, to switch onenand to async mode, first configuring
>>> gpmc to sync mode would be required & for that we need frequency information
>>> from onenand and to get that information from onenand, gpmc has to be configured
>>> for sync mode and to configure gpmc to sync mode ....
>>
>> You are concerned about hwmod performing a reset of the gpmc during
>> boot? We should be able to use the HWMOD_INIT_NO_RESET flag to prevent
>> this. Would that work?
>
> Yes that will work in the short term, the reason I am trying to avoid no
> reset flag in the long term is to prevent this board support being broken,
> please refer Paul's requirement [1] in accepting gpmc hwmod patch
Ok, thanks for the reminder.
So we have 2 options here ...
1. Use the HWMOD_INIT_NO_RESET for now and your updated version of this
patch
2. See if there is a gpio available to control the OneNAND reset on the
n900.
Do you agree? Any other options?
Cheers
Jon
next prev parent reply other threads:[~2012-07-03 15:10 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-27 6:33 [PATCH v5 0/3] Prepare for GPMC driver conversion Afzal Mohammed
2012-06-27 6:33 ` [PATCH v5 1/3] ARM: OMAP2+: nand: unify init functions Afzal Mohammed
2012-06-27 6:33 ` [PATCH v5 2/3] ARM: OMAP2+: gpmc: handle additional timings Afzal Mohammed
2012-06-27 6:34 ` [PATCH v5 3/3] ARM: OMAP2+: onenand: prepare for gpmc driver migration Afzal Mohammed
2012-06-27 14:58 ` Tony Lindgren
2012-06-28 9:32 ` Mohammed, Afzal
2012-06-28 12:32 ` Tony Lindgren
2012-06-28 12:33 ` Mohammed, Afzal
2012-06-28 12:44 ` Mohammed, Afzal
2012-07-30 7:36 ` Mohammed, Afzal
2012-06-28 16:43 ` Jon Hunter
2012-06-28 19:00 ` Jon Hunter
2012-07-02 6:26 ` Tony Lindgren
2012-06-29 6:15 ` Mohammed, Afzal
2012-06-29 6:38 ` Mohammed, Afzal
2012-06-29 14:15 ` Jon Hunter
2012-07-02 10:04 ` Mohammed, Afzal
2012-07-02 6:36 ` Tony Lindgren
2012-07-02 9:43 ` Mohammed, Afzal
2012-07-02 17:29 ` Jon Hunter
2012-07-03 4:35 ` Mohammed, Afzal
2012-07-03 15:10 ` Jon Hunter [this message]
2012-07-04 5:36 ` Mohammed, Afzal
2012-07-02 17:25 ` Jon Hunter
2012-07-03 8:17 ` Tony Lindgren
2012-07-03 15:12 ` Jon Hunter
2012-07-04 7:00 ` Mohammed, Afzal
2012-07-04 7:51 ` Tony Lindgren
2012-07-05 10:24 ` Mohammed, Afzal
2012-07-05 10:55 ` Tony Lindgren
2012-07-05 11:58 ` Mohammed, Afzal
2012-07-05 14:49 ` Tony Lindgren
2012-07-05 14:51 ` Mohammed, Afzal
2012-07-06 12:05 ` Tony Lindgren
2012-07-10 6:20 ` Mohammed, Afzal
2012-07-10 9:45 ` Tony Lindgren
2012-07-10 10:04 ` Mohammed, Afzal
2012-07-10 13:17 ` Tony Lindgren
2012-07-10 13:47 ` Mohammed, Afzal
2012-07-10 17:15 ` Jon Hunter
2012-07-11 6:47 ` Tony Lindgren
2012-07-13 4:36 ` Mohammed, Afzal
2012-08-06 13:38 ` gpmc generic retime function (subject was RE: [PATCH v5 3/3] ARM: OMAP2+: onenand: prepare for gpmc driver migration) Mohammed, Afzal
2012-08-17 15:02 ` Jon Hunter
2012-08-21 11:14 ` Mohammed, Afzal
2012-06-27 10:08 ` [PATCH v5 0/3] Prepare for GPMC driver conversion Mohammed, Afzal
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