Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul: - new Xilixn VDMA driver from Srikanth - bunch of updates for edma driver by Thomas, Joel and Peter - fixes and updates on dw, ste_dma, freescale, mpc512x, sudmac etc * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (45 commits) dmaengine: sh: don't use dynamic static allocation dmaengine: sh: fix print specifier warnings dmaengine: sh: make shdma_prep_dma_cyclic static dmaengine: Kconfig: Update MXS_DMA help text to include MX6Q/MX6DL of: dma: Grammar s/requests/request/, s/used required/required/ dmaengine: shdma: Enable driver compilation with COMPILE_TEST dmaengine: rcar-hpbdma: Include linux/err.h dmaengine: sudmac: Include linux/err.h dmaengine: sudmac: Keep #include sorted alphabetically dmaengine: shdmac: Include linux/err.h dmaengine: shdmac: Keep #include sorted alphabetically dmaengine: s3c24xx-dma: Add cyclic transfer support dmaengine: s3c24xx-dma: Process whole SG chain dmaengine: imx: correct sdmac->status for cyclic dma tx dmaengine: pch: fix compilation for alpha target dmaengine: dw: check return code of dma_async_device_register() dmaengine: dw: fix regression in dw_probe() function dmaengine: dw: enable clock before access dma: pch_dma: Fix Kconfig dependencies dmaengine: mpc512x: add support for peripheral transfers ...
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@@ -1,17 +1,20 @@
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* MARVELL MMP DMA controller
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Marvell Peripheral DMA Controller
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Used platfroms: pxa688, pxa910, pxa3xx, etc
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Used platforms: pxa688, pxa910, pxa3xx, etc
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Required properties:
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- compatible: Should be "marvell,pdma-1.0"
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- reg: Should contain DMA registers location and length.
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- interrupts: Either contain all of the per-channel DMA interrupts
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or one irq for pdma device
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- #dma-channels: Number of DMA channels supported by the controller.
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Optional properties:
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- #dma-channels: Number of DMA channels supported by the controller (defaults
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to 32 when not specified)
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"marvell,pdma-1.0"
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Used platfroms: pxa25x, pxa27x, pxa3xx, pxa93x, pxa168, pxa910, pxa688.
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Used platforms: pxa25x, pxa27x, pxa3xx, pxa93x, pxa168, pxa910, pxa688.
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Examples:
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@@ -45,7 +48,7 @@ pdma: dma-controller@d4000000 {
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Marvell Two Channel DMA Controller used specifically for audio
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Used platfroms: pxa688, pxa910
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Used platforms: pxa688, pxa910
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Required properties:
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- compatible: Should be "marvell,adma-1.0" or "marvell,pxa910-squ"
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75
Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
Normal file
75
Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
Normal file
@@ -0,0 +1,75 @@
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Xilinx AXI VDMA engine, it does transfers between memory and video devices.
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It can be configured to have one channel or two channels. If configured
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as two channels, one is to transmit to the video device and another is
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to receive from the video device.
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Required properties:
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- compatible: Should be "xlnx,axi-vdma-1.00.a"
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- #dma-cells: Should be <1>, see "dmas" property below
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- reg: Should contain VDMA registers location and length.
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- xlnx,num-fstores: Should be the number of framebuffers as configured in h/w.
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- dma-channel child node: Should have at least one channel and can have up to
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two channels per device. This node specifies the properties of each
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DMA channel (see child node properties below).
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Optional properties:
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- xlnx,include-sg: Tells configured for Scatter-mode in
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the hardware.
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- xlnx,flush-fsync: Tells which channel to Flush on Frame sync.
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It takes following values:
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{1}, flush both channels
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{2}, flush mm2s channel
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{3}, flush s2mm channel
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Required child node properties:
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- compatible: It should be either "xlnx,axi-vdma-mm2s-channel" or
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"xlnx,axi-vdma-s2mm-channel".
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- interrupts: Should contain per channel VDMA interrupts.
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- xlnx,data-width: Should contain the stream data width, take values
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{32,64...1024}.
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Optional child node properties:
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- xlnx,include-dre: Tells hardware is configured for Data
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Realignment Engine.
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- xlnx,genlock-mode: Tells Genlock synchronization is
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enabled/disabled in hardware.
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Example:
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++++++++
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axi_vdma_0: axivdma@40030000 {
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compatible = "xlnx,axi-vdma-1.00.a";
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#dma_cells = <1>;
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reg = < 0x40030000 0x10000 >;
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xlnx,num-fstores = <0x8>;
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xlnx,flush-fsync = <0x1>;
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dma-channel@40030000 {
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compatible = "xlnx,axi-vdma-mm2s-channel";
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interrupts = < 0 54 4 >;
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xlnx,datawidth = <0x40>;
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} ;
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dma-channel@40030030 {
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compatible = "xlnx,axi-vdma-s2mm-channel";
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interrupts = < 0 53 4 >;
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xlnx,datawidth = <0x40>;
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} ;
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} ;
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* DMA client
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Required properties:
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- dmas: a list of <[Video DMA device phandle] [Channel ID]> pairs,
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where Channel ID is '0' for write/tx and '1' for read/rx
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channel.
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- dma-names: a list of DMA channel names, one per "dmas" entry
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Example:
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++++++++
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vdmatest_0: vdmatest@0 {
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compatible ="xlnx,axi-vdma-test-1.00.a";
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dmas = <&axi_vdma_0 0
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&axi_vdma_0 1>;
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dma-names = "vdma0", "vdma1";
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} ;
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