[PATCH 2/4] DW DMAC: add is-memcpu property to device tree
From: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Date: 2016-11-16 13:57:14
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lkml
Subsystem:
dma generic offload engine subsystem, synopsys designware dmac driver, the rest · Maintainers:
Vinod Koul, Viresh Kumar, Linus Torvalds
Memory-to-memory dma transfers were disabled by default if we used DT to cofigure DMAC. Add is-memcpu property, so it became possible to enable memory-to-memory transfers support via DT. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> --- drivers/dma/dw/platform.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index 4103f1d..daeceac 100644
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c@@ -131,6 +131,9 @@ dw_dma_parse_dt(struct platform_device *pdev) else if (of_property_read_bool(np, "is-private")) pdata->is_private = true; + if (of_property_read_bool(np, "is-memcpu")) + pdata->is_memcpy = true; + if (!of_property_read_u32(np, "chan_allocation_order", &tmp)) pdata->chan_allocation_order = (unsigned char)tmp;
--
2.5.5