| Message ID | 20190930114055.29315-3-peter.ujfalusi@ti.com |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | dmaengine: bindings/edma: dma-channel-mask to array | expand |
| Context | Check | Description |
|---|---|---|
| robh/checkpatch | success |
On Mon, 30 Sep 2019 14:40:54 +0300, Peter Ujfalusi wrote: > Similarly to paRAM slots, channels can be used by other cores. > > The common dma-channel-mask property can be used for specifying the > available channels. > > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> > --- > Documentation/devicetree/bindings/dma/ti-edma.txt | 8 ++++++++ > 1 file changed, 8 insertions(+) > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/dma/ti-edma.txt b/Documentation/devicetree/bindings/dma/ti-edma.txt index 4bbc94d829c8..0e1398f93aa2 100644 --- a/Documentation/devicetree/bindings/dma/ti-edma.txt +++ b/Documentation/devicetree/bindings/dma/ti-edma.txt @@ -42,6 +42,11 @@ Optional properties: - ti,edma-reserved-slot-ranges: PaRAM slot ranges which should not be used by the driver, they are allocated to be used by for example the DSP. See example. +- dma-channel-mask: Mask of usable channels. + Single uint32 for EDMA with 32 channels, array of two uint32 for + EDMA with 64 channels. See example and + Documentation/devicetree/bindings/dma/dma-common.yaml + ------------------------------------------------------------------------------ eDMA3 Transfer Controller @@ -91,6 +96,9 @@ edma: edma@49000000 { ti,edma-memcpy-channels = <20 21>; /* The following PaRAM slots are reserved: 35-44 and 100-109 */ ti,edma-reserved-slot-ranges = <35 10>, <100 10>; + /* The following channels are reserved: 35-44 */ + dma-channel-mask = <0xffffffff /* Channel 0-31 */ + 0xffffe007>; /* Channel 32-63 */ }; edma_tptc0: tptc@49800000 {
Similarly to paRAM slots, channels can be used by other cores. The common dma-channel-mask property can be used for specifying the available channels. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- Documentation/devicetree/bindings/dma/ti-edma.txt | 8 ++++++++ 1 file changed, 8 insertions(+)