From patchwork Fri Jul 17 01:33:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 11668639 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 215FF161F for ; Fri, 17 Jul 2020 01:33:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 07BC420872 for ; Fri, 17 Jul 2020 01:33:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="UQHLETVp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726138AbgGQBdx (ORCPT ); Thu, 16 Jul 2020 21:33:53 -0400 Received: from perceval.ideasonboard.com ([213.167.242.64]:41672 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726780AbgGQBdx (ORCPT ); Thu, 16 Jul 2020 21:33:53 -0400 Received: from pendragon.bb.dnainternet.fi (81-175-216-236.bb.dnainternet.fi [81.175.216.236]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id C745C71D; Fri, 17 Jul 2020 03:33:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1594949631; bh=cpucIY7jody2CRvnutkZeEThx5BZUhRDM8Me+WqyTlE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UQHLETVpWnpyBTYW5qs4J/SBkrCfqguZ3Z0E0cjDSAnnZ6yN+z3E4Eb6q07KE3kut FUDPPEuHaFZiIqZQZvq1Xz876c5pn/SF9f8tCECIohYBajGgoq7JvVN7AHtmIpihcS 4JlwtH7b9JlQyiI43oxZ3Icd9futaA+hXNjtmLZE= From: Laurent Pinchart To: dmaengine@vger.kernel.org Cc: Michal Simek , Hyun Kwon , Tejas Upadhyay , Satish Kumar Nagireddy , Vinod Koul , Peter Ujfalusi Subject: [PATCH v7 1/5] dt: bindings: dma: xilinx: dpdma: DT bindings for Xilinx DPDMA Date: Fri, 17 Jul 2020 04:33:33 +0300 Message-Id: <20200717013337.24122-2-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200717013337.24122-1-laurent.pinchart@ideasonboard.com> References: <20200717013337.24122-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org The ZynqMP includes the DisplayPort subsystem with its own DMA engine called DPDMA. The DPDMA IP comes with 6 individual channels (4 for display, 2 for audio). This documentation describes DT bindings of DPDMA. Signed-off-by: Hyun Kwon Signed-off-by: Michal Simek Signed-off-by: Laurent Pinchart Reviewed-by: Rob Herring --- Changes since v2: - Fix id URL - Fix path to dma-controller.yaml - Update license to GPL-2.0-only OR BSD-2-Clause Changes since v1: - Convert the DT bindings to YAML - Drop the DT child nodes --- .../dma/xilinx/xlnx,zynqmp-dpdma.yaml | 68 +++++++++++++++++++ MAINTAINERS | 8 +++ include/dt-bindings/dma/xlnx-zynqmp-dpdma.h | 16 +++++ 3 files changed, 92 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml create mode 100644 include/dt-bindings/dma/xlnx-zynqmp-dpdma.h diff --git a/Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml b/Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml new file mode 100644 index 000000000000..5de510f8c88c --- /dev/null +++ b/Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/xilinx/xlnx,zynqmp-dpdma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xilinx ZynqMP DisplayPort DMA Controller Device Tree Bindings + +description: | + These bindings describe the DMA engine included in the Xilinx ZynqMP + DisplayPort Subsystem. The DMA engine supports up to 6 DMA channels (3 + channels for a video stream, 1 channel for a graphics stream, and 2 channels + for an audio stream). + +maintainers: + - Laurent Pinchart + +allOf: + - $ref: "../dma-controller.yaml#" + +properties: + "#dma-cells": + const: 1 + description: | + The cell is the DMA channel ID (see dt-bindings/dma/xlnx-zynqmp-dpdma.h + for a list of channel IDs). + + compatible: + const: xlnx,zynqmp-dpdma + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + description: The AXI clock + maxItems: 1 + + clock-names: + const: axi_clk + +required: + - "#dma-cells" + - compatible + - reg + - interrupts + - clocks + - clock-names + +additionalProperties: false + +examples: + - | + #include + + dma: dma-controller@fd4c0000 { + compatible = "xlnx,zynqmp-dpdma"; + reg = <0x0 0xfd4c0000 0x0 0x1000>; + interrupts = ; + interrupt-parent = <&gic>; + clocks = <&dpdma_clk>; + clock-names = "axi_clk"; + #dma-cells = <1>; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index 68f21d46614c..fa52d4f9f8c8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18852,6 +18852,14 @@ F: Documentation/devicetree/bindings/media/xilinx/ F: drivers/media/platform/xilinx/ F: include/uapi/linux/xilinx-v4l2-controls.h +XILINX ZYNQMP DPDMA DRIVER +M: Hyun Kwon +M: Laurent Pinchart +L: dmaengine@vger.kernel.org +S: Supported +F: Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml +F: include/dt-bindings/dma/xlnx-zynqmp-dpdma.h + XILLYBUS DRIVER M: Eli Billauer L: linux-kernel@vger.kernel.org diff --git a/include/dt-bindings/dma/xlnx-zynqmp-dpdma.h b/include/dt-bindings/dma/xlnx-zynqmp-dpdma.h new file mode 100644 index 000000000000..3719cda5679d --- /dev/null +++ b/include/dt-bindings/dma/xlnx-zynqmp-dpdma.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ +/* + * Copyright 2019 Laurent Pinchart + */ + +#ifndef __DT_BINDINGS_DMA_XLNX_ZYNQMP_DPDMA_H__ +#define __DT_BINDINGS_DMA_XLNX_ZYNQMP_DPDMA_H__ + +#define ZYNQMP_DPDMA_VIDEO0 0 +#define ZYNQMP_DPDMA_VIDEO1 1 +#define ZYNQMP_DPDMA_VIDEO2 2 +#define ZYNQMP_DPDMA_GRAPHICS 3 +#define ZYNQMP_DPDMA_AUDIO0 4 +#define ZYNQMP_DPDMA_AUDIO1 5 + +#endif /* __DT_BINDINGS_DMA_XLNX_ZYNQMP_DPDMA_H__ */