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Date: Tue, 15 Oct 2013 14:38:49 +0100
From: Mark Rutland <mark.rutland@....com>
To: Hongbo Zhang <hongbo.zhang@...escale.com>
Cc: "rob.herring@...xeda.com" <rob.herring@...xeda.com>,
Pawel Moll <Pawel.Moll@....com>,
"swarren@...dotorg.org" <swarren@...dotorg.org>,
"ian.campbell@...rix.com" <ian.campbell@...rix.com>,
"vinod.koul@...el.com" <vinod.koul@...el.com>,
"djbw@...com" <djbw@...com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v11 2/3] DMA: Freescale: Add new 8-channel DMA engine
device tree nodes
On Tue, Oct 08, 2013 at 04:22:07AM +0100, Hongbo Zhang wrote:
> Hi Mark, Stephen and other DT maintainers?
>
> The 1/3 had already been acked by Mark, and please have a further look
> at this patch 2/3.
> The DMA maintainer Vinod needs ack for the DT related patches so that
> he can take all this patch set.
Sorry for the delay.
This looks ok to me.
Acked-by: Mark Rutland <mark.rutland@....com>
>
> On 09/26/2013 05:33 PM, hongbo.zhang@...escale.com wrote:
> > From: Hongbo Zhang <hongbo.zhang@...escale.com>
> >
> > Freescale QorIQ T4 and B4 introduce new 8-channel DMA engines, this patch adds
> > the device tree nodes for them.
> >
> > Signed-off-by: Hongbo Zhang <hongbo.zhang@...escale.com>
> > ---
> > .../devicetree/bindings/powerpc/fsl/dma.txt | 70 +++++++++++++++++
> > arch/powerpc/boot/dts/fsl/b4si-post.dtsi | 4 +-
> > arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi | 82 ++++++++++++++++++++
> > arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi | 82 ++++++++++++++++++++
> > arch/powerpc/boot/dts/fsl/t4240si-post.dtsi | 4 +-
> > 5 files changed, 238 insertions(+), 4 deletions(-)
> > create mode 100644 arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi
> > create mode 100644 arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi
> >
> > diff --git a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> > index 0584168..7fc1b01 100644
> > --- a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> > +++ b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> > @@ -128,6 +128,76 @@ Example:
> > };
> > };
> >
> > +** Freescale Elo3 DMA Controller
> > + DMA controller which has same function as EloPlus except that Elo3 has 8
> > + channels while EloPlus has only 4, it is used in Freescale Txxx and Bxxx
> > + series chips, such as t1040, t4240, b4860.
> > +
> > +Required properties:
> > +
> > +- compatible : must include "fsl,elo3-dma"
> > +- reg : contains two entries for DMA General Status Registers,
> > + i.e. DGSR0 which includes status for channel 1~4, and
> > + DGSR1 for channel 5~8
> > +- ranges : describes the mapping between the address space of the
> > + DMA channels and the address space of the DMA controller
> > +
> > +- DMA channel nodes:
> > + - compatible : must include "fsl,eloplus-dma-channel"
> > + - reg : DMA channel specific registers
> > + - interrupts : interrupt specifier for DMA channel IRQ
> > + - interrupt-parent : optional, if needed for interrupt mapping
> > +
> > +Example:
> > +dma@...300 {
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + compatible = "fsl,elo3-dma";
> > + reg = <0x100300 0x4>,
> > + <0x100600 0x4>;
> > + ranges = <0x0 0x100100 0x500>;
> > + dma-channel@0 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x0 0x80>;
> > + interrupts = <28 2 0 0>;
> > + };
> > + dma-channel@80 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x80 0x80>;
> > + interrupts = <29 2 0 0>;
> > + };
> > + dma-channel@100 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x100 0x80>;
> > + interrupts = <30 2 0 0>;
> > + };
> > + dma-channel@180 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x180 0x80>;
> > + interrupts = <31 2 0 0>;
> > + };
> > + dma-channel@300 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x300 0x80>;
> > + interrupts = <76 2 0 0>;
> > + };
> > + dma-channel@380 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x380 0x80>;
> > + interrupts = <77 2 0 0>;
> > + };
> > + dma-channel@400 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x400 0x80>;
> > + interrupts = <78 2 0 0>;
> > + };
> > + dma-channel@480 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x480 0x80>;
> > + interrupts = <79 2 0 0>;
> > + };
> > +};
> > +
> > Note on DMA channel compatible properties: The compatible property must say
> > "fsl,elo-dma-channel" or "fsl,eloplus-dma-channel" to be used by the Elo DMA
> > driver (fsldma). Any DMA channel used by fsldma cannot be used by another
> > diff --git a/arch/powerpc/boot/dts/fsl/b4si-post.dtsi b/arch/powerpc/boot/dts/fsl/b4si-post.dtsi
> > index 7399154..ea53ea1 100644
> > --- a/arch/powerpc/boot/dts/fsl/b4si-post.dtsi
> > +++ b/arch/powerpc/boot/dts/fsl/b4si-post.dtsi
> > @@ -223,13 +223,13 @@
> > reg = <0xe2000 0x1000>;
> > };
> >
> > -/include/ "qoriq-dma-0.dtsi"
> > +/include/ "elo3-dma-0.dtsi"
> > dma@...300 {
> > fsl,iommu-parent = <&pamu0>;
> > fsl,liodn-reg = <&guts 0x580>; /* DMA1LIODNR */
> > };
> >
> > -/include/ "qoriq-dma-1.dtsi"
> > +/include/ "elo3-dma-1.dtsi"
> > dma@...300 {
> > fsl,iommu-parent = <&pamu0>;
> > fsl,liodn-reg = <&guts 0x584>; /* DMA2LIODNR */
> > diff --git a/arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi b/arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi
> > new file mode 100644
> > index 0000000..3c210e0
> > --- /dev/null
> > +++ b/arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi
> > @@ -0,0 +1,82 @@
> > +/*
> > + * QorIQ Elo3 DMA device tree stub [ controller @ offset 0x100000 ]
> > + *
> > + * Copyright 2013 Freescale Semiconductor Inc.
> > + *
> > + * Redistribution and use in source and binary forms, with or without
> > + * modification, are permitted provided that the following conditions are met:
> > + * * Redistributions of source code must retain the above copyright
> > + * notice, this list of conditions and the following disclaimer.
> > + * * Redistributions in binary form must reproduce the above copyright
> > + * notice, this list of conditions and the following disclaimer in the
> > + * documentation and/or other materials provided with the distribution.
> > + * * Neither the name of Freescale Semiconductor nor the
> > + * names of its contributors may be used to endorse or promote products
> > + * derived from this software without specific prior written permission.
> > + *
> > + *
> > + * ALTERNATIVELY, this software may be distributed under the terms of the
> > + * GNU General Public License ("GPL") as published by the Free Software
> > + * Foundation, either version 2 of that License or (at your option) any
> > + * later version.
> > + *
> > + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
> > + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
> > + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
> > + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
> > + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
> > + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
> > + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
> > + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> > + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
> > + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> > + */
> > +
> > +dma0: dma@...300 {
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + compatible = "fsl,elo3-dma";
> > + reg = <0x100300 0x4>,
> > + <0x100600 0x4>;
> > + ranges = <0x0 0x100100 0x500>;
> > + dma-channel@0 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x0 0x80>;
> > + interrupts = <28 2 0 0>;
> > + };
> > + dma-channel@80 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x80 0x80>;
> > + interrupts = <29 2 0 0>;
> > + };
> > + dma-channel@100 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x100 0x80>;
> > + interrupts = <30 2 0 0>;
> > + };
> > + dma-channel@180 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x180 0x80>;
> > + interrupts = <31 2 0 0>;
> > + };
> > + dma-channel@300 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x300 0x80>;
> > + interrupts = <76 2 0 0>;
> > + };
> > + dma-channel@380 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x380 0x80>;
> > + interrupts = <77 2 0 0>;
> > + };
> > + dma-channel@400 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x400 0x80>;
> > + interrupts = <78 2 0 0>;
> > + };
> > + dma-channel@480 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x480 0x80>;
> > + interrupts = <79 2 0 0>;
> > + };
> > +};
> > diff --git a/arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi b/arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi
> > new file mode 100644
> > index 0000000..cccf3bb
> > --- /dev/null
> > +++ b/arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi
> > @@ -0,0 +1,82 @@
> > +/*
> > + * QorIQ Elo3 DMA device tree stub [ controller @ offset 0x101000 ]
> > + *
> > + * Copyright 2013 Freescale Semiconductor Inc.
> > + *
> > + * Redistribution and use in source and binary forms, with or without
> > + * modification, are permitted provided that the following conditions are met:
> > + * * Redistributions of source code must retain the above copyright
> > + * notice, this list of conditions and the following disclaimer.
> > + * * Redistributions in binary form must reproduce the above copyright
> > + * notice, this list of conditions and the following disclaimer in the
> > + * documentation and/or other materials provided with the distribution.
> > + * * Neither the name of Freescale Semiconductor nor the
> > + * names of its contributors may be used to endorse or promote products
> > + * derived from this software without specific prior written permission.
> > + *
> > + *
> > + * ALTERNATIVELY, this software may be distributed under the terms of the
> > + * GNU General Public License ("GPL") as published by the Free Software
> > + * Foundation, either version 2 of that License or (at your option) any
> > + * later version.
> > + *
> > + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
> > + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
> > + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
> > + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
> > + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
> > + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
> > + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
> > + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> > + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
> > + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> > + */
> > +
> > +dma1: dma@...300 {
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + compatible = "fsl,elo3-dma";
> > + reg = <0x101300 0x4>,
> > + <0x101600 0x4>;
> > + ranges = <0x0 0x101100 0x500>;
> > + dma-channel@0 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x0 0x80>;
> > + interrupts = <32 2 0 0>;
> > + };
> > + dma-channel@80 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x80 0x80>;
> > + interrupts = <33 2 0 0>;
> > + };
> > + dma-channel@100 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x100 0x80>;
> > + interrupts = <34 2 0 0>;
> > + };
> > + dma-channel@180 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x180 0x80>;
> > + interrupts = <35 2 0 0>;
> > + };
> > + dma-channel@300 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x300 0x80>;
> > + interrupts = <80 2 0 0>;
> > + };
> > + dma-channel@380 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x380 0x80>;
> > + interrupts = <81 2 0 0>;
> > + };
> > + dma-channel@400 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x400 0x80>;
> > + interrupts = <82 2 0 0>;
> > + };
> > + dma-channel@480 {
> > + compatible = "fsl,eloplus-dma-channel";
> > + reg = <0x480 0x80>;
> > + interrupts = <83 2 0 0>;
> > + };
> > +};
> > diff --git a/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi b/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
> > index bd611a9..ec95c60 100644
> > --- a/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
> > +++ b/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
> > @@ -387,8 +387,8 @@
> > reg = <0xea000 0x4000>;
> > };
> >
> > -/include/ "qoriq-dma-0.dtsi"
> > -/include/ "qoriq-dma-1.dtsi"
> > +/include/ "elo3-dma-0.dtsi"
> > +/include/ "elo3-dma-1.dtsi"
> >
> > /include/ "qoriq-espi-0.dtsi"
> > spi@...000 {
>
>
>
>
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