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information available within the IP instead of reading it from platform data or DT. Some other useful clean-ups are included too. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQIcBAABAgAGBQJTgGMBAAoJEGFBu2jqvgRN/FAP/2fl2dcX8aYTVY+H7y0r4I65 IpUGqOPktztUI0UgeDtlt1p+B4SBfOIGTP8Zx6PaDD6TQGM2GLv4HFS5yfpVF9vb OMbCanwHz0GED6UKBbUJQEhaebrTv/M5jdsNrwJ9qMrB7zP7zr1bTDj3G6QJD4+D n8yUu+HPXD9wtAh263aRPxRFeNfBhJIJtBF3b4HV52KJ0pCPmrwvqpFIahl63AsF Lrdbt200ZeHFVzkIANN0SSjlUDF9towTCo2ok1VaF0U7JJ1J3WMOJpT/zcrzyYsK A8Ts8znb/ml7JF94z4Th/dE714QyQcfX/u76skOPRsZUZ9BcQDEX0jNpP3Elgh47 hw8yYj+BJRoCs7tE6o4WpIlCVLgRQglZeyUkTbl4hOAAmvIffoj9MSRk1LDJ/WaC s3PbT/93KgCOgP/iY0WsSlOPJGGQPHNEB+0O90qHL/e6fh9Kqt3dX1Sf9fj/ZFQ5 x66qTJkDk3SkRzyWFIUyROlEH2toamHKHhQ5v1LUxSPJCekUl3PTUS3GiZtS+PmS 85NSJWwq1Hv9xowKqVS3kkH6gLPkmTTB0uec138RQ/AMHp7SA9DCkShvheyvt1wM LaPuAmWBci4cALzFo1aeEUEa6ij5Waew0Nm5r9L3kJvMqBCjdLG16DnzXUShFgOq THYpsGPUdvdUi+JPdps0 =AWLc -----END PGP SIGNATURE----- Merge tag 'davinci-for-v3.16/edma' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers Merge "DaVinci EDMA clean-up for v3.16" from Sekhar Nori: This series makes edma use configuration information available within the IP instead of reading it from platform data or DT. Some other useful clean-ups are included too. * tag 'davinci-for-v3.16/edma' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: (34 commits) ARM: edma: Remove redundant/unused parameters from edma_soc_info ARM: davinci: Remove redundant/unused parameters for edma ARM: dts: am4372: Remove obsolete properties from edma node ARM: dts: am33xx: Remove obsolete properties from edma node dt/bindings: ti,edma: Remove redundant properties from documentation ARM: edma: Get IP configuration from HW (number of channels, tc, etc) ARM: edma: Save number of regions from pdata to struct edma ARM: edma: Remove num_cc member from struct edma ARM: edma: Remove queue_tc_mapping data from edma_soc_info ARM: davinci: Remove eDMA3 queue_tc_mapping data from edma_soc_info ARM: edma: Do not change TC -> Queue mapping, leave it to default. ARM: edma: Take the number of tc from edma_soc_info (pdata) ARM: edma: No need to clean the pdata in edma_of_parse_dt() ARM: edma: Clean up and simplify the code around irq request dmaengine: edma: update DMA memcpy to use new param element dmaengine: edma: Document variables used for residue accounting dmaengine: edma: Provide granular accounting dmaengine: edma: Make reading the position of active channels work dmaengine: edma: Store transfer data in edma_desc and edma_pset dmaengine: edma: Create private pset struct ... Signed-off-by: Olof Johansson <olof@lixom.net>
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
TI EDMA
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Required properties:
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- compatible : "ti,edma3"
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- #dma-cells: Should be set to <1>
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Clients should use a single channel number per DMA request.
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- reg: Memory map for accessing module
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- interrupt-parent: Interrupt controller the interrupt is routed through
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- interrupts: Exactly 3 interrupts need to be specified in the order:
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1. Transfer completion interrupt.
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2. Memory protection interrupt.
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3. Error interrupt.
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Optional properties:
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- ti,hwmods: Name of the hwmods associated to the EDMA
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- ti,edma-xbar-event-map: Crossbar event to channel map
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Deprecated properties:
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Listed here in case one wants to boot an old kernel with new DTB. These
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properties might need to be added to the new DTS files.
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- ti,edma-regions: Number of regions
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- ti,edma-slots: Number of slots
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- dma-channels: Specify total DMA channels per CC
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Example:
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edma: edma@49000000 {
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reg = <0x49000000 0x10000>;
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interrupt-parent = <&intc>;
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interrupts = <12 13 14>;
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compatible = "ti,edma3";
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ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2";
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#dma-cells = <1>;
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ti,edma-xbar-event-map = /bits/ 16 <1 12
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2 13>;
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};
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