Commit 284119c4 authored Aug 10, 2009 by Vikram Pandita Committed by Tony Lindgren Aug 10, 2009

OMAP2/3: DMA errata correction



This errata is valid for:
OMAP2420 Errata 1.85 Impacts all 2420 ES rev
OMAP2430 Errata 1.10 Impacts only ES1.0
Description: DMA may hang when several channels are used in parallel
OMAP3430: Not impacted, so remove the errata fix for omap3

Fixed issue reported on cpu_is_omap24xx check reported by Nishant Kamat

Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Reviewed-by: Nishant Kamat <nskamat@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

parent cd922049

arch/arm/plat-omap/dma.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -946,7 +946,9 @@ void omap_start_dma(int lch)

		cur_lch = next_lch;
		} while (next_lch != -1);
		} else if (cpu_class_is_omap2()) {
		} else if (cpu_is_omap242x() \|\|
		(cpu_is_omap243x() && omap_type() <= OMAP2430_REV_ES1_0)) {

		/* Errata: Need to write lch even if not using chaining */
		dma_write(lch, CLNK_CTRL(lch));
		}