Commit 03aa254f authored by Hongbo Zhang's avatar Hongbo Zhang Committed by Vinod Koul
Browse files

DMA: Freescale: Add new 8-channel DMA engine device tree nodes 



Freescale QorIQ T4 and B4 introduce new 8-channel DMA engines, this patch adds
the device tree nodes for them.

Signed-off-by: default avatarHongbo Zhang <hongbo.zhang@freescale.com>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent c3d68d8d

Documentation/devicetree/bindings/powerpc/fsl/dma.txt

+70 −0
Original line number Diff line number Diff line
@@ -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@100300 {

	#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

arch/powerpc/boot/dts/fsl/b4si-post.dtsi

+2 −2
Original line number Diff line number Diff line
@@ -223,13 +223,13 @@ 
		reg = <0xe2000 0x1000>;

	};



/include/ "qoriq-dma-0.dtsi"

/include/ "elo3-dma-0.dtsi"

	dma@100300 {

		fsl,iommu-parent = <&pamu0>;

		fsl,liodn-reg = <&guts 0x580>; /* DMA1LIODNR */

	};



/include/ "qoriq-dma-1.dtsi"

/include/ "elo3-dma-1.dtsi"

	dma@101300 {

		fsl,iommu-parent = <&pamu0>;

		fsl,liodn-reg = <&guts 0x584>; /* DMA2LIODNR */

arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi

0 → 100644
+82 −0
Original line number Diff line number Diff line 
/*

 * 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@100300 {

	#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>;

	};

};

arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi

0 → 100644
+82 −0
Original line number Diff line number Diff line 
/*

 * 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@101300 {

	#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>;

	};

};

arch/powerpc/boot/dts/fsl/t4240si-post.dtsi

+2 −2
Original line number Diff line number Diff line
@@ -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@110000 {

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