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OMAP2/3: DMA errata correction

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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>
This commit is contained in:
Vikram Pandita 2009-08-10 14:49:50 +03:00 committed by Tony Lindgren
parent cd92204924
commit 284119c48f
1 changed files with 3 additions and 1 deletions
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4
arch/arm/plat-omap/dma.c
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@ -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));
}