On Tue, Sep 10, 2019 at 02:45:58PM +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@xxxxxx>
> ---
> 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
> +
What's the size? 2 cells?
>
> ------------------------------------------------------------------------------
> 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
>
