ARM: mach-shmobile: r8a7740: reserve DMA memory for the frame buffer (3841e6f5) · Commits · 戴 / test

The default 2MB size of DMA coherent memory isn't enough for allocate frame buffer memory. Signed-off-by:

arch/arm/mach-shmobile/setup-r8a7740.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -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 */