| Message ID | 1350566815-409-9-git-send-email-mporter@ti.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
On 10/18/2012 6:56 PM, Matt Porter wrote: > Adds AM33XX EDMA support to the am33xx.dtsi as documented in > Documentation/devicetree/bindings/dma/ti-edma.txt > > Signed-off-by: Matt Porter <mporter@ti.com> > --- > arch/arm/boot/dts/am33xx.dtsi | 31 +++++++++++++++++++++++++++++++ > 1 file changed, 31 insertions(+) > > diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi > index bb31bff..ab9c78f 100644 > --- a/arch/arm/boot/dts/am33xx.dtsi > +++ b/arch/arm/boot/dts/am33xx.dtsi > @@ -62,6 +62,37 @@ > reg = <0x48200000 0x1000>; > }; > > + edma: edma@49000000 { > + compatible = "ti,edma3"; > + ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2"; > + reg = <0x49000000 0x10000>, > + <0x44e10f90 0x10>; > + interrupt-parent = <&intc>; > + interrupts = <12 13 14>; > + #dma-cells = <1>; > + dma-channels = <64>; > + ti,edma-regions = <4>; > + ti,edma-slots = <256>; > + ti,edma-reserved-channels = <0 2 > + 14 2 > + 26 6 > + 48 4 > + 56 8>; > + ti,edma-reserved-slots = <0 2 > + 14 2 > + 26 6 > + 48 4 > + 56 8 > + 64 127>; No need to reserve any channels or slots on AM335x, I think. This is used on DaVinci devices to share channels with DSP. I am not sure the cortex-M3 or PRU on the AM335x need to (or even can) have EDMA access. Thanks, Sekhar ------------------------------------------------------------------------------ WINDOWS 8 is here. Millions of people. Your app in 30 days. Visit The Windows 8 Center at Sourceforge for all your go to resources. http://windows8center.sourceforge.net/ join-generation-app-and-make-money-coding-fast/
On Sun, Oct 28, 2012 at 04:46:36PM +0530, Sekhar Nori wrote: > On 10/18/2012 6:56 PM, Matt Porter wrote: > > Adds AM33XX EDMA support to the am33xx.dtsi as documented in > > Documentation/devicetree/bindings/dma/ti-edma.txt > > > > Signed-off-by: Matt Porter <mporter@ti.com> > > --- > > arch/arm/boot/dts/am33xx.dtsi | 31 +++++++++++++++++++++++++++++++ > > 1 file changed, 31 insertions(+) > > > > diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi > > index bb31bff..ab9c78f 100644 > > --- a/arch/arm/boot/dts/am33xx.dtsi > > +++ b/arch/arm/boot/dts/am33xx.dtsi > > @@ -62,6 +62,37 @@ > > reg = <0x48200000 0x1000>; > > }; > > > > + edma: edma@49000000 { > > + compatible = "ti,edma3"; > > + ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2"; > > + reg = <0x49000000 0x10000>, > > + <0x44e10f90 0x10>; > > + interrupt-parent = <&intc>; > > + interrupts = <12 13 14>; > > + #dma-cells = <1>; > > + dma-channels = <64>; > > + ti,edma-regions = <4>; > > + ti,edma-slots = <256>; > > + ti,edma-reserved-channels = <0 2 > > + 14 2 > > + 26 6 > > + 48 4 > > + 56 8>; > > + ti,edma-reserved-slots = <0 2 > > + 14 2 > > + 26 6 > > + 48 4 > > + 56 8 > > + 64 127>; > > No need to reserve any channels or slots on AM335x, I think. This is > used on DaVinci devices to share channels with DSP. I am not sure the > cortex-M3 or PRU on the AM335x need to (or even can) have EDMA access. I agree. I'm dropping this from the .dtsi in v4 as it is board/application specific. The PRU, at least, can use the EDMA and I've seen examples as such, but we can't hardcode this. The feature is there and documented in the binding if somebody needs to reserve channels in their .dts. -Matt ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. ON SALE this month only -- learn more at: http://p.sf.net/sfu/learnmore_122712
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi index bb31bff..ab9c78f 100644 --- a/arch/arm/boot/dts/am33xx.dtsi +++ b/arch/arm/boot/dts/am33xx.dtsi @@ -62,6 +62,37 @@ reg = <0x48200000 0x1000>; }; + edma: edma@49000000 { + compatible = "ti,edma3"; + ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2"; + reg = <0x49000000 0x10000>, + <0x44e10f90 0x10>; + interrupt-parent = <&intc>; + interrupts = <12 13 14>; + #dma-cells = <1>; + dma-channels = <64>; + ti,edma-regions = <4>; + ti,edma-slots = <256>; + ti,edma-reserved-channels = <0 2 + 14 2 + 26 6 + 48 4 + 56 8>; + ti,edma-reserved-slots = <0 2 + 14 2 + 26 6 + 48 4 + 56 8 + 64 127>; + ti,edma-queue-tc-map = <0 0 + 1 1 + 2 2>; + ti,edma-queue-priority-map = <0 0 + 1 1 + 2 2>; + ti,edma-default-queue = <0>; + }; + gpio1: gpio@44e07000 { compatible = "ti,omap4-gpio"; ti,hwmods = "gpio1";
Adds AM33XX EDMA support to the am33xx.dtsi as documented in Documentation/devicetree/bindings/dma/ti-edma.txt Signed-off-by: Matt Porter <mporter@ti.com> --- arch/arm/boot/dts/am33xx.dtsi | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+)