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platform: imx8m: Add SDMA definition 

This commit adds the definition of the SDMA controller we use for SOF,
namely SDMA2 (the other instances of SDMA are used for non-audio-related
DMA in the system). This DMAC can serve the SAI.

A way to account for channel 0 being used internally needs to be added.

Signed-off-by: Paul Olaru <paul.olaru@nxp.com>
This commit is contained in:
Paul Olaru 2020-03-23 10:24:08 +02:00 committed by Liam Girdwood
parent b3420a5b1b
commit c941b0a9f1
1 changed files with 16 additions and 0 deletions
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16
src/platform/imx8m/lib/dma.c
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@ -12,6 +12,7 @@
#include <sof/spinlock.h>
extern struct dma_ops dummy_dma_ops;
extern struct dma_ops sdma_ops;
SHARED_DATA struct dma dma[PLATFORM_NUM_DMACS] = {
{
@ -23,6 +24,21 @@ SHARED_DATA struct dma dma[PLATFORM_NUM_DMACS] = {
},
.ops = &dummy_dma_ops,
},
{
.plat_data = {
.id = DMA_ID_SDMA2,
/* Note: support is available for MEM_TO_MEM but not
* enabled as it is unneeded
*/
.dir = DMA_DIR_MEM_TO_DEV | DMA_DIR_DEV_TO_MEM,
.devs = DMA_DEV_SAI,
.base = SDMA2_BASE,
.channels = 32,
.irq = SDMA2_IRQ,
.irq_name = SDMA2_IRQ_NAME,
},
.ops = &sdma_ops,
},
};
const struct dma_info lib_dma = {