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Re: [RFC] Support 36-bit iomem on 32-bit Au1x00

To: "" <>
Subject: Re: [RFC] Support 36-bit iomem on 32-bit Au1x00
From: Manuel Lauss <>
Date: Tue, 26 Jan 2010 21:46:45 +0100
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In-reply-to: <hhq35v$m1q$>
References: <hhq35v$m1q$>
Hi Pascal,

On Sun, Jan 3, 2010 at 1:39 PM, <> wrote:
> Hi,
> I believe these changes are needed on Alchemy SoCs in order to
> use iomem above 4G with the usual platform_device machinery:
> - Set CONFIG_ARCH_PHYS_ADDR_T_64BIT to make resource_size_t 64-bit.
> - Increase IOMEM_RESOURCE_END so that platforms can register resources.

Have you tried to register a platform device above the 4G line?  I get an oops
inside the platform device match code  when I do.  I'll try to figure out why.


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