From: Kumar Gala <galak-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
To: David Brownell <david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
Cc: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
linuxppc-dev-mnsaURCQ41sdnm+yROfE0A@public.gmane.org
Subject: Re: [PATCH 7/7] [POWERPC][SPI] spi_mpc83xx: allow use on MPC85xx
Date: Tue, 25 Sep 2007 23:00:38 -0500 [thread overview]
Message-ID: <7881139C-EEF1-41DC-AB0F-115632E892B8@kernel.crashing.org> (raw)
In-Reply-To: <20070925165845.40B0E2397FB-ZcXrCSuhvln6VZ3dlLfH/g4gEjPzgfUyLrfjE7I9kuVHxeISYlDBzl6hYfS7NtTn@public.gmane.org>
On Sep 25, 2007, at 11:58 AM, David Brownell wrote:
>>>> - depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
>>>> + depends on SPI_MASTER && (PPC_83xx || PPC_85xx) && EXPERIMENTAL
>>>
>>> Should that really be just PPC_83xx || QUICC_ENGINE?
>>
>> Well, I thought about that. By now I'm unsure if every QE
>> implementation will be compatible with further ones.
>
> How many other QE implementations exist? Is that sort of
> gratuitous breakage something Freescale makes a habit of?
We try not to, but HW people are know to do evil things to keep us
software guys employed.
>> So far
>> I've tested this driver on MPC8323 and MPC8568. If we'll see
>> more and more compatible QE SPI controllers, of course we
>> may just do || QUICC_ENGINE.
>>
>> PPC_83xx || PPC_85xx
>> PPC_83xx || QUICC_ENGINE
>>
>> Today first option saves us four bytes. ;-)
>
> It'd be good if someone would look at the relevant docs.
>
> I'll wait for a PPC signoff before I forward this for
> merge with SPI stuff...
I'm still in favor of making it PPC_83xx || QUICC_ENGINE.
So if when we have 87xx with QUICC_ENGINE we don't have to tweak it
again, but its a minor thing.
- k
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next prev parent reply other threads:[~2007-09-26 4:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070925143126.GA30013@localhost.localdomain>
[not found] ` <20070925143126.GA30013-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-09-25 14:35 ` [PATCH 7/7] [POWERPC][SPI] spi_mpc83xx: allow use on MPC85xx Anton Vorontsov
[not found] ` <20070925143531.GG5323-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-09-25 14:48 ` Peter Korsgaard
[not found] ` <874phiol7j.fsf-uXGAPMMVk8amE9MCos8gUmSdvHPH+/yF@public.gmane.org>
2007-09-25 15:02 ` [PATCH v2 " Anton Vorontsov
2007-09-25 15:04 ` [PATCH " Kumar Gala
[not found] ` <16E78F0E-B57B-4084-887E-5D2F9C1D0331-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2007-09-25 15:18 ` Anton Vorontsov
[not found] ` <20070925151819.GA6757-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-09-25 16:58 ` David Brownell
[not found] ` <20070925165845.40B0E2397FB-ZcXrCSuhvln6VZ3dlLfH/g4gEjPzgfUyLrfjE7I9kuVHxeISYlDBzl6hYfS7NtTn@public.gmane.org>
2007-09-26 4:00 ` Kumar Gala [this message]
[not found] ` <7881139C-EEF1-41DC-AB0F-115632E892B8-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
2007-09-26 13:15 ` [PATCH 7/7] [POWERPC][SPI] spi_mpc83xx: allow use on any processors with QUICC Engine Anton Vorontsov
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