From: Tero Kristo <t-kristo@ti.com>
To: Peter Ujfalusi <peter.ujfalusi@ti.com>, <vkoul@kernel.org>,
<robh+dt@kernel.org>, <nm@ti.com>, <ssantosh@kernel.org>
Cc: <dan.j.williams@intel.com>, <dmaengine@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<grygorii.strashko@ti.com>, <lokeshvutla@ti.com>,
<tony@atomide.com>, <j-keerthy@ti.com>
Subject: Re: [PATCH v3 08/14] dmaengine: ti: New driver for K3 UDMA - split#1: defines, structs, io func
Date: Wed, 9 Oct 2019 16:40:59 +0300 [thread overview]
Message-ID: <8bd7db20-811d-b7c7-38ec-75f1c9d94b8f@ti.com> (raw)
In-Reply-To: <20191001061704.2399-9-peter.ujfalusi@ti.com>
On 01/10/2019 09:16, Peter Ujfalusi wrote:
> Split patch for review containing: defines, structs, io and low level
> functions and interrupt callbacks.
>
> DMA driver for
> Texas Instruments K3 NAVSS Unified DMA – Peripheral Root Complex (UDMA-P)
>
> The UDMA-P is intended to perform similar (but significantly upgraded) functions
> as the packet-oriented DMA used on previous SoC devices. The UDMA-P module
> supports the transmission and reception of various packet types. The UDMA-P is
> architected to facilitate the segmentation and reassembly of SoC DMA data
> structure compliant packets to/from smaller data blocks that are natively
> compatible with the specific requirements of each connected peripheral. Multiple
> Tx and Rx channels are provided within the DMA which allow multiple segmentation
> or reassembly operations to be ongoing. The DMA controller maintains state
> information for each of the channels which allows packet segmentation and
> reassembly operations to be time division multiplexed between channels in order
> to share the underlying DMA hardware. An external DMA scheduler is used to
> control the ordering and rate at which this multiplexing occurs for Transmit
> operations. The ordering and rate of Receive operations is indirectly controlled
> by the order in which blocks are pushed into the DMA on the Rx PSI-L interface.
>
> The UDMA-P also supports acting as both a UTC and UDMA-C for its internal
> channels. Channels in the UDMA-P can be configured to be either Packet-Based or
> Third-Party channels on a channel by channel basis.
>
> The initial driver supports:
> - MEM_TO_MEM (TR mode)
> - DEV_TO_MEM (Packet / TR mode)
> - MEM_TO_DEV (Packet / TR mode)
> - Cyclic (Packet / TR mode)
> - Metadata for descriptors
>
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Did review this to best of my ability but could not find anything
obviously broken, thus:
Reviewed-by: Tero Kristo <t-kristo@ti.com>
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
next prev parent reply other threads:[~2019-10-09 13:41 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-01 6:16 [PATCH v3 00/14] dmaengine/soc: Add Texas Instruments UDMA support Peter Ujfalusi
2019-10-01 6:16 ` [PATCH v3 01/14] bindings: soc: ti: add documentation for k3 ringacc Peter Ujfalusi
2019-10-01 6:16 ` [PATCH v3 02/14] soc: ti: k3: add navss ringacc driver Peter Ujfalusi
2019-10-09 7:14 ` Tero Kristo
2019-10-09 13:27 ` Lokesh Vutla
2019-10-25 9:30 ` Peter Ujfalusi
2019-10-29 8:52 ` Lokesh Vutla
2019-10-30 13:10 ` Grygorii Strashko
2019-10-01 6:16 ` [PATCH v3 03/14] dmaengine: doc: Add sections for per descriptor metadata support Peter Ujfalusi
2019-10-09 7:30 ` Tero Kristo
2019-10-01 6:16 ` [PATCH v3 04/14] dmaengine: Add metadata_ops for dma_async_tx_descriptor Peter Ujfalusi
2019-10-09 7:37 ` Tero Kristo
2019-10-01 6:16 ` [PATCH v3 05/14] dmaengine: Add support for reporting DMA cached data amount Peter Ujfalusi
2019-10-09 9:17 ` Tero Kristo
2019-10-01 6:16 ` [PATCH v3 06/14] dmaengine: ti: Add cppi5 header for UDMA Peter Ujfalusi
2019-10-09 9:13 ` Tero Kristo
2019-10-01 6:16 ` [PATCH v3 07/14] dt-bindings: dma: ti: Add document for K3 UDMA Peter Ujfalusi
2019-10-10 17:52 ` Rob Herring
2019-10-11 7:30 ` Peter Ujfalusi
2019-10-15 17:30 ` Peter Ujfalusi
2019-10-17 14:03 ` Rob Herring
2019-10-22 11:46 ` Peter Ujfalusi
2019-10-01 6:16 ` [PATCH v3 08/14] dmaengine: ti: New driver for K3 UDMA - split#1: defines, structs, io func Peter Ujfalusi
2019-10-09 13:40 ` Tero Kristo [this message]
2019-10-01 6:16 ` [PATCH v3 09/14] dmaengine: ti: New driver for K3 UDMA - split#2: probe/remove, xlate and filter_fn Peter Ujfalusi
2019-10-03 8:35 ` Peter Ujfalusi
2019-10-01 6:17 ` [PATCH v3 10/14] dmaengine: ti: New driver for K3 UDMA - split#3: alloc/free chan_resources Peter Ujfalusi
2019-10-01 6:17 ` [PATCH v3 11/14] dmaengine: ti: New driver for K3 UDMA - split#4: dma_device callbacks 1 Peter Ujfalusi
2019-10-01 6:17 ` [PATCH v3 12/14] dmaengine: ti: New driver for K3 UDMA - split#5: dma_device callbacks 2 Peter Ujfalusi
2019-10-01 6:17 ` [PATCH v3 13/14] dmaengine: ti: New driver for K3 UDMA - split#6: Kconfig and Makefile Peter Ujfalusi
2019-10-01 6:17 ` [PATCH v3 14/14] dmaengine: ti: k3-udma: Add glue layer for non DMAengine users Peter Ujfalusi
2019-10-04 16:35 ` [PATCH v3 00/14] dmaengine/soc: Add Texas Instruments UDMA support santosh.shilimkar
2019-10-08 10:09 ` Peter Ujfalusi
2019-10-09 16:02 ` santosh.shilimkar
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