| Message ID | 20190910114559.22810-3-peter.ujfalusi@ti.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
| Series | dmaengine: bindings/edma: dma-channel-mask to array | expand |
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@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 > + 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 >
On 18/09/2019 16.29, Rob Herring wrote: > 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@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 >> + > > What's the size? 2 cells? Depending on the EDMA, some have 32, some have 64 channels. I'll update the patch to reflect this. >> >> ------------------------------------------------------------------------------ >> 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 >> - Péter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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 {
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(+)