From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: dmaengine@vger.kernel.org
Cc: Michal Simek <michal.simek@xilinx.com>,
Hyun Kwon <hyun.kwon@xilinx.com>,
Tejas Upadhyay <tejasu@xilinx.com>,
Satish Kumar Nagireddy <SATISHNA@xilinx.com>,
devicetree@vger.kernel.org
Subject: [PATCH v2 1/4] dt: bindings: dma: xilinx: dpdma: DT bindings for Xilinx DPDMA
Date: Thu, 7 Nov 2019 04:13:57 +0200 [thread overview]
Message-ID: <20191107021400.16474-2-laurent.pinchart@ideasonboard.com> (raw)
In-Reply-To: <20191107021400.16474-1-laurent.pinchart@ideasonboard.com>
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 <hyun.kwon@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
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..b677b2c4f302
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/xlnx,zynqmp-dpdma.yaml#
+$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 <laurent.pinchart@ideasonboard.com>
+
+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 <dt-bindings/interrupt-controller/arm-gic.h>
+
+ dma: dma-controller@fd4c0000 {
+ compatible = "xlnx,zynqmp-dpdma";
+ reg = <0x0 0xfd4c0000 0x0 0x1000>;
+ interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-parent = <&gic>;
+ clocks = <&dpdma_clk>;
+ clock-names = "axi_clk";
+ #dma-cells = <1>;
+ };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index cba1095547fd..457b39bc2320 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17898,6 +17898,14 @@ F: drivers/misc/Kconfig
F: drivers/misc/Makefile
F: include/uapi/misc/xilinx_sdfec.h
+XILINX ZYNQMP DPDMA DRIVER
+M: Hyun Kwon <hyun.kwon@xilinx.com>
+M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+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 <eli.billauer@gmail.com>
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 <laurent.pinchart@ideasonboard.com>
+ */
+
+#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__ */
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2019-11-07 2:14 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-07 2:13 [PATCH v2 0/4] dma: Add Xilinx ZynqMP DPDMA driver Laurent Pinchart
2019-11-07 2:13 ` Laurent Pinchart [this message]
2019-11-13 13:24 ` [PATCH v2 1/4] dt: bindings: dma: xilinx: dpdma: DT bindings for Xilinx DPDMA Rob Herring
2019-11-07 2:13 ` [PATCH v2 2/4] dma: xilinx: dpdma: Add the Xilinx DisplayPort DMA engine driver Laurent Pinchart
2019-11-09 17:59 ` Vinod Koul
2019-12-05 15:04 ` Laurent Pinchart
2019-12-05 16:39 ` Vinod Koul
2019-12-05 20:27 ` Hyun Kwon
2019-12-08 16:03 ` Laurent Pinchart
2019-12-20 5:13 ` Laurent Pinchart
2019-12-20 8:01 ` Vinod Koul
2019-12-20 12:35 ` Laurent Pinchart
2019-12-20 15:40 ` Vinod Koul
2019-12-20 16:02 ` Laurent Pinchart
2020-01-03 0:59 ` Laurent Pinchart
2020-01-09 15:57 ` Laurent Pinchart
2020-01-10 7:41 ` Vinod Koul
2020-01-22 16:52 ` Laurent Pinchart
2019-11-07 2:13 ` [PATCH v2 3/4] dma: xilinx: dpdma: Add debugfs support Laurent Pinchart
2019-11-07 2:14 ` [PATCH v2 4/4] arm64: dts: zynqmp: Add DPDMA node Laurent Pinchart
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191107021400.16474-2-laurent.pinchart@ideasonboard.com \
--to=laurent.pinchart@ideasonboard.com \
--cc=SATISHNA@xilinx.com \
--cc=devicetree@vger.kernel.org \
--cc=dmaengine@vger.kernel.org \
--cc=hyun.kwon@xilinx.com \
--cc=michal.simek@xilinx.com \
--cc=tejasu@xilinx.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).