Re: [PATCH 1/3] ARM: dts: da850: Add the cppi41 dma node

Sergei Shtylyov
2017-01-09T18:26:08Z

Hello.

On 01/09/2017 07:24 PM, Alexandre Bailon wrote:

> This adds the device tree node for the cppi41 dma
> used by the usb otg controller present in the da850 family of SoC's.
>
> Signed-off-by: Alexandre Bailon <abailon-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
> ---
> arch/arm/boot/dts/da850.dtsi | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
> index 104155d..d6b406a 100644
> --- a/arch/arm/boot/dts/da850.dtsi
> +++ b/arch/arm/boot/dts/da850.dtsi
> @@ -403,6 +403,22 @@
> phy-names = "usb-phy";
> status = "disabled";
> };
> + cppi41dma: dma-controller@201000 {
> + compatible = "ti,da8xx-cppi41";
> + reg = <0x200000 0x1000

I don't remember any DA8xx glue regs having to do with the CPPI 4.1...

> + 0x201000 0x1000
> + 0x202000 0x1000
> + 0x204000 0x4000>;
> + reg-names = "glue", "controller",
> + "scheduler", "queuemgr";
> + interrupts = <58>;
> + interrupt-names = "glue";
> + #dma-cells = <2>;
> + #dma-channels = <4>;
> + #dma-requests = <256>;
> + status = "disabled";

Why disabled? It doesn't use any external pins...

[...]

MBR, Sergei