Messages in this thread Patch in this message | | | From | Peter Ujfalusi <> | Subject | [PATCH v2 2/3] dt-bindings: dma: ti-edma: Document dma-channel-mask for EDMA | Date | Tue, 10 Sep 2019 14:45:58 +0300 |
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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 | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/dma/ti-edma.txt b/Documentation/devicetree/bindings/dma/ti-edma.txt index 4bbc94d829c8..3c7736246354 100644 --- a/Documentation/devicetree/bindings/dma/ti-edma.txt +++ b/Documentation/devicetree/bindings/dma/ti-edma.txt @@ -42,6 +42,9 @@ 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, see + Documentation/devicetree/bindings/dma/dma-common.yaml + ------------------------------------------------------------------------------ eDMA3 Transfer Controller @@ -91,6 +94,9 @@ 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 { -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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