Set coherent_dma_mask to DMA_BIT_MASK(32) for dma40 platform_device, as
without this DMA allocations were failing with the error:
dma40 dma40.0: coherent DMA mask is unset
when booting without device-tree.
Signed-off-by: Fabio Baltieri <fabio.balti...@linaro.org>
---
Hi Linus, Lee,
I found this while removing the last hack I was keeping in my ASoC tree.
I originally thought that I had to set this on the driver's pdata, but
it turns out it's needed on the DMA controller one instead.
When booting with device-tree enabled the mask seems to be set
automatically.
Would you consider applying this with the other dma40 patches?
Thanks,
Fabio
arch/arm/mach-ux500/devices-db8500.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/mach-ux500/devices-db8500.c
b/arch/arm/mach-ux500/devices-db8500.c
index e21ffd8..fa8f7a5 100644
--- a/arch/arm/mach-ux500/devices-db8500.c
+++ b/arch/arm/mach-ux500/devices-db8500.c
@@ -49,6 +49,7 @@ struct stedma40_platform_data dma40_plat_data = {
struct platform_device u8500_dma40_device = {
.dev = {
.platform_data = &dma40_plat_data,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
},
.name = "dma40",
.id = 0,
--
1.8.2
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