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List: linux-sh
Subject: Re: [GIT PULL] Renesas ARM Based SoC Soc Updates for v3.19
From: Laurent Pinchart <laurent.pinchart () ideasonboard ! com>
Date: 2014-11-27 20:48:12
Message-ID: 2367916.IecTPygCF4 () avalon
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Hi Arnd,
On Wednesday 19 November 2014 22:05:56 Arnd Bergmann wrote:
> On Tuesday 04 November 2014, Simon Horman wrote:
> > ----------------------------------------------------------------
> > Renesas ARM Based SoC Soc Updates for v3.19
> >
> > * Select CONFIG_ZONE_DMA when CONFIG_ARM_LPAE is enabled
> > * Add CA7 arch_timer initialization for r8a7794
> > * Handle CA7 arch timer delay
> > * Add shmobile_init_late() to sh7372
> >
> > - This is consistent with other shmobile SoCs
>
> Pulled into next/soc.
>
> Note that the CONFIG_ZONE_DMA change might not be the best solution, we
> should probably have CONFIG_ZONE_DMA32 instead as some other architectures
> do, so you can use the entire lowmem area for DMA allocations.
I might be mistaken, but if the machine description doesn't set the
dma_zone_size field, arm_dma_zone_size and arm_dma_limit are set to 0 and
0xffffffff respectively. This results in MAX_DMA_ADDRESS being set to
0xffffffff. Doesn't that allow using the entire lowmem area for DMA
allocations ?
--
Regards,
Laurent Pinchart
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