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omap: sdma: Limit the secure reserve channel fix for omap3 

The commit 'ba50ea7e' reserves DMA channels 0 and 1 on high
security devices, in order to avoid collision between kernel
dma transfers and ROM code dma transfers.

This fix is applicable only for OMAP3 so add an appropriate
check.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
CC: Kalle Jokiniemi <kalle.jokiniemi@digia.com>
CC: Kevin Hilman <khilman@deeprootsystems.com>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Reviewed-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
hifive-unleashed-5.1
Santosh Shilimkar 2010-02-18 08:59:09 +00:00 committed by Tony Lindgren
parent 1ce0f9d4a9
commit 35c0dc389d
1 changed files with 2 additions and 1 deletions
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3
arch/arm/plat-omap/dma.c
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@ -2149,7 +2149,8 @@ static int __init omap_init_dma(void)
DMA_SYSCONFIG_AUTOIDLE);
dma_write(v , OCP_SYSCONFIG);
/* reserve dma channels 0 and 1 in high security devices */
if (omap_type() != OMAP2_DEVICE_TYPE_GP) {
if (cpu_is_omap34xx() &&
(omap_type() != OMAP2_DEVICE_TYPE_GP)) {
printk(KERN_INFO "Reserving DMA channels 0 and 1 for "
"HS ROM code\n");
dma_chan[0].dev_id = 0;