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Commit b5beef5d authored by Imre Deak's avatar Imre Deak Committed by Tony Lindgren
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ARM: OMAP: Sleep is prevented when no LCD is attached 



We have to make sure that the LCD DMA external destination bit is
cleared by default, otherwise OMAP won't sleep.

Signed-off-by: default avatarImre Deak <imre.deak@solidboot.com>
Signed-off-by: default avatarJuha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 5a4e86da

arch/arm/plat-omap/dma.c

+8 −0
Original line number Diff line number Diff line
@@ -1339,6 +1339,14 @@ static int __init omap_init_dma(void) 
			dma_chan_count = 16;

		} else

			dma_chan_count = 9;

		if (cpu_is_omap16xx()) {

			u16 w;



			/* this would prevent OMAP sleep */

			w = omap_readw(OMAP1610_DMA_LCD_CTRL);

			w &= ~(1 << 8);

			omap_writew(w, OMAP1610_DMA_LCD_CTRL);

		}

	} else if (cpu_is_omap24xx()) {

		u8 revision = omap_readb(OMAP_DMA4_REVISION);

		printk(KERN_INFO "OMAP DMA hardware revision %d.%d\n",