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ARM: mach-shmobile: r8a7740: reserve DMA memory for the frame buffer 

The default 2MB size of DMA coherent memory isn't enough for allocate
frame buffer memory.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Kuninori Morimoto 2012-04-24 02:10:05 -07:00 committed by Rafael J. Wysocki
parent 0a4266bb22
commit 3841e6f561
1 changed files with 7 additions and 0 deletions
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7
arch/arm/mach-shmobile/setup-r8a7740.c
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@ -18,6 +18,7 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
@ -60,6 +61,12 @@ static struct map_desc r8a7740_io_desc[] __initdata = {
void __init r8a7740_map_io(void)
{
iotable_init(r8a7740_io_desc, ARRAY_SIZE(r8a7740_io_desc));
/*
* DMA memory at 0xff200000 - 0xffdfffff. The default 2MB size isn't
* enough to allocate the frame buffer memory.
*/
init_consistent_dma_size(12 << 20);
}
/* SCIFA0 */