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dmaengine: imx-sdma: add a test for imx8mq multi sdma devices

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On i.mx8mq, there are two sdma instances, and the common dma framework
will get a channel dynamically from any available sdma instance whether
it's the first sdma device or the second sdma device. Some IPs like
SAI only work with sdma2 not sdma1. To make sure the sdma channel is from
the correct sdma device, use the node pointer to match.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Angus Ainslie (Purism)
2019-01-28 09:03:22 -07:00
committed by Vinod Koul
parent 25aaa75df1
commit de7b7dca87
2 changed files with 7 additions and 0 deletions
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include/linux/platform_data/dma-imx.h
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@@ -55,6 +55,7 @@ struct imx_dma_data {
int dma_request2; /* secondary DMA request line */
enum sdma_peripheral_type peripheral_type;
int priority;
struct device_node *of_node;
};
static inline int imx_dma_is_ipu(struct dma_chan *chan)