lkml.org 
[lkml]   [2013]   [Jun]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Change the internal SRAM memory type MT_MEMORY_NONCACHED
On 08/06/2013 04:17, Wenyou Yang :
> Because MT_DEVICE is not executable in armv7, we change
> the internal SRAM memory type to MT_MEMORY_NONCACHED.
> As it seems that caching this internal SRAM memory is not necessary,
> we chose the this memory type.
>
> Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

But Russell, can we have your advice on this as you made us re-think
about that during previous patch discussion?

Bye,

> ---
> arch/arm/mach-at91/setup.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
> index a33d4b5..98d55ef 100644
> --- a/arch/arm/mach-at91/setup.c
> +++ b/arch/arm/mach-at91/setup.c
> @@ -84,7 +84,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
>
> desc->pfn = __phys_to_pfn(base);
> desc->length = length;
> - desc->type = MT_DEVICE;
> + desc->type = MT_MEMORY_NONCACHED;
>
> pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
> base, length, desc->virtual);
>


--
Nicolas Ferre


\
 
 \ /
  Last update: 2013-06-13 16:01    [W:0.107 / U:0.240 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site