From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Christophe Leroy <christophe.leroy-GgN8y9CXRhA@public.gmane.org>
Cc: Benjamin Herrenschmidt
<benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>,
Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>,
Marcelo Tosatti <marcelo-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>,
Vitaly Bordug
<vitb-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Joakim Tjernlund
<joakim.tjernlund-SNLAxHN9vbcOP4wsBPIw7w@public.gmane.org>,
scottwood-KZfg59tc24xl57MIdRCFDg@public.gmane.org
Subject: Re: [PATCH 2/2] spi: fsl-spi: Allow dynamic allocation of CPM1 parameter RAM
Date: Fri, 3 Oct 2014 15:44:20 +0100 [thread overview]
Message-ID: <20141003144420.GC24441@sirena.org.uk> (raw)
In-Reply-To: <20141003125609.5BEA11AB276-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
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On Fri, Oct 03, 2014 at 02:56:09PM +0200, Christophe Leroy wrote:
> +config CPM1_RELOCSPI
> + bool "Dynamic SPI relocation"
> + default n
> + help
> + On recent MPC8xx (at least MPC866 and MPC885) SPI can be relocated
> + without micropatch. This activates relocation to a dynamically
> + allocated area in the CPM Dual port RAM.
> + When combined with SPI relocation patch (for older MPC8xx) it avoids
> + the "loss" of additional Dual port RAM space just above the patch,
> + which might be needed for example when using the CPM QMC.
Something like this shouldn't be a compile time option. Either it
should be unconditional or it should be triggered in some system
specific manner (from DT, from knowing about other users or similar).
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WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Marcelo Tosatti <marcelo@kvack.org>,
linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
Paul Mackerras <paulus@samba.org>,
scottwood@freescale.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 2/2] spi: fsl-spi: Allow dynamic allocation of CPM1 parameter RAM
Date: Fri, 3 Oct 2014 15:44:20 +0100 [thread overview]
Message-ID: <20141003144420.GC24441@sirena.org.uk> (raw)
In-Reply-To: <20141003125609.5BEA11AB276@localhost.localdomain>
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On Fri, Oct 03, 2014 at 02:56:09PM +0200, Christophe Leroy wrote:
> +config CPM1_RELOCSPI
> + bool "Dynamic SPI relocation"
> + default n
> + help
> + On recent MPC8xx (at least MPC866 and MPC885) SPI can be relocated
> + without micropatch. This activates relocation to a dynamically
> + allocated area in the CPM Dual port RAM.
> + When combined with SPI relocation patch (for older MPC8xx) it avoids
> + the "loss" of additional Dual port RAM space just above the patch,
> + which might be needed for example when using the CPM QMC.
Something like this shouldn't be a compile time option. Either it
should be unconditional or it should be triggered in some system
specific manner (from DT, from knowing about other users or similar).
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WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Marcelo Tosatti <marcelo@kvack.org>,
Vitaly Bordug <vitb@kernel.crashing.org>,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-spi@vger.kernel.org,
Joakim Tjernlund <joakim.tjernlund@transmode.se>,
scottwood@freescale.com
Subject: Re: [PATCH 2/2] spi: fsl-spi: Allow dynamic allocation of CPM1 parameter RAM
Date: Fri, 3 Oct 2014 15:44:20 +0100 [thread overview]
Message-ID: <20141003144420.GC24441@sirena.org.uk> (raw)
In-Reply-To: <20141003125609.5BEA11AB276@localhost.localdomain>
[-- Attachment #1: Type: text/plain, Size: 752 bytes --]
On Fri, Oct 03, 2014 at 02:56:09PM +0200, Christophe Leroy wrote:
> +config CPM1_RELOCSPI
> + bool "Dynamic SPI relocation"
> + default n
> + help
> + On recent MPC8xx (at least MPC866 and MPC885) SPI can be relocated
> + without micropatch. This activates relocation to a dynamically
> + allocated area in the CPM Dual port RAM.
> + When combined with SPI relocation patch (for older MPC8xx) it avoids
> + the "loss" of additional Dual port RAM space just above the patch,
> + which might be needed for example when using the CPM QMC.
Something like this shouldn't be a compile time option. Either it
should be unconditional or it should be triggered in some system
specific manner (from DT, from knowing about other users or similar).
[-- Attachment #2: Digital signature --]
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next prev parent reply other threads:[~2014-10-03 14:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-03 12:56 [PATCH 2/2] spi: fsl-spi: Allow dynamic allocation of CPM1 parameter RAM Christophe Leroy
2014-10-03 12:56 ` Christophe Leroy
2014-10-03 12:56 ` Christophe Leroy
[not found] ` <20141003125609.5BEA11AB276-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2014-10-03 14:44 ` Mark Brown [this message]
2014-10-03 14:44 ` Mark Brown
2014-10-03 14:44 ` Mark Brown
[not found] ` <20141003144420.GC24441-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2014-10-03 20:15 ` christophe leroy
2014-10-03 20:15 ` christophe leroy
2014-10-03 20:15 ` christophe leroy
2014-10-03 20:24 ` Scott Wood
2014-10-03 20:24 ` Scott Wood
2014-10-03 20:24 ` Scott Wood
[not found] ` <1412367858.13320.432.camel-88ow+0ZRuxG2UiBs7uKeOtHuzzzSOjJt@public.gmane.org>
2014-10-04 10:15 ` christophe leroy
2014-10-04 10:15 ` christophe leroy
2014-10-04 10:15 ` christophe leroy
2014-10-07 0:19 ` Scott Wood
2014-10-07 0:19 ` Scott Wood
[not found] ` <1412641184.13320.506.camel-88ow+0ZRuxG2UiBs7uKeOtHuzzzSOjJt@public.gmane.org>
2014-10-08 16:46 ` leroy christophe
2014-10-08 16:46 ` leroy christophe
2014-10-08 16:46 ` leroy christophe
[not found] ` <54356A53.3010700-GgN8y9CXRhA@public.gmane.org>
2014-10-08 18:45 ` Scott Wood
2014-10-08 18:45 ` Scott Wood
2014-10-08 18:45 ` Scott Wood
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