@@ -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(+) -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki