From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: [PATCH 1/3] ARM: dts: da850: Add the cppi41 dma node Date: Tue, 10 Jan 2017 19:42:41 +0300 Message-ID: <04b76330-70b7-3d44-05d3-6793fddcfa9e@cogentembedded.com> References: <20170109162449.5012-1-abailon@baylibre.com> <20170109162449.5012-2-abailon@baylibre.com> <811adb6b-00e4-bbc4-d6f5-7bf3ba85ab63@cogentembedded.com> <026deab8-8584-0744-3ec5-9346a7f6d16a@lechnology.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <026deab8-8584-0744-3ec5-9346a7f6d16a-nq/r/kbU++upp/zk7JDF2g@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: David Lechner , Alexandre Bailon , nsekhar-l0cyMroinI0@public.gmane.org, khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org Cc: vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, ptitiano-rdvid1DuHRBWk0Htik3J/w@public.gmane.org, tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, b-liu-l0cyMroinI0@public.gmane.org List-Id: linux-omap@vger.kernel.org On 01/10/2017 07:15 PM, David Lechner 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 >>> --- >>> 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... > > Why enable it if musb node is not also enabled? Well, it's a good point. >> [...] MBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html