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Fri, 9 Apr 2021 10:56:35 -0700 Envelope-to: git@xilinx.com, robh+dt@kernel.org, vkoul@kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Received: from [172.23.64.106] (port=33274 helo=xhdvnc125.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1lUvMw-0001BQ-1X; Fri, 09 Apr 2021 10:56:34 -0700 Received: by xhdvnc125.xilinx.com (Postfix, from userid 13245) id 2E9E2121108; Fri, 9 Apr 2021 23:26:20 +0530 (IST) From: Radhey Shyam Pandey To: , , CC: , , , , , Radhey Shyam Pandey Subject: [RFC v2 PATCH 1/7] dt-bindings: dmaengine: xilinx_dma: Add xlnx,axistream-connected property Date: Fri, 9 Apr 2021 23:25:59 +0530 Message-ID: <1617990965-35337-2-git-send-email-radhey.shyam.pandey@xilinx.com> X-Mailer: git-send-email 2.1.1 In-Reply-To: <1617990965-35337-1-git-send-email-radhey.shyam.pandey@xilinx.com> References: <1617990965-35337-1-git-send-email-radhey.shyam.pandey@xilinx.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 7be3b1ed-0839-4173-fe92-08d8fb80e3e3 X-MS-TrafficTypeDiagnostic: PH0PR02MB7830: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:7219; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Apr 2021 17:57:06.9871 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7be3b1ed-0839-4173-fe92-08d8fb80e3e3 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch02.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: SN1NAM02FT020.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR02MB7830 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add an optional DMA property 'xlnx,axistream-connected'. This can be specified to indicate that DMA is connected to a streaming IP in the hardware design and dma driver needs to do some additional handling i.e pass metadata and perform streaming IP specific configuration. Signed-off-by: Radhey Shyam Pandey --- Changes for v2: - Rename xlnx,axieth-connected to xlnx,axistream-connected to make it generic. --- Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt index 325aca52cd43..f5f23a4a4467 100644 --- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt +++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt @@ -49,6 +49,8 @@ Optional properties for AXI DMA and MCDMA: register as configured in h/w. Takes values {8...26}. If the property is missing or invalid then the default value 23 is used. This is the maximum value that is supported by all IP versions. +- xlnx,axistream-connected: Tells whether DMA is connected to AXI stream IP. + Optional properties for VDMA: - xlnx,flush-fsync: Tells which channel to Flush on Frame sync. It takes following values: -- 2.7.4