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Date: Mon, 12 Dec 2016 15:00:35 +0000
From: Ramiro Oliveira <Ramiro.Oliveira@...opsys.com>
To: robh+dt@...nel.org, mark.rutland@....com, mchehab@...nel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-media@...r.kernel.org
Cc: davem@...emloft.net, gregkh@...uxfoundation.org,
geert+renesas@...der.be, akpm@...ux-foundation.org,
linux@...ck-us.net, hverkuil@...all.nl,
laurent.pinchart+renesas@...asonboard.com, arnd@...db.de,
sudipm.mukherjee@...il.com, tiffany.lin@...iatek.com,
minghsiu.tsai@...iatek.com, jean-christophe.trotin@...com,
andrew-ct.chen@...iatek.com, simon.horman@...ronome.com,
songjun.wu@...rochip.com, bparrot@...com,
CARLOS.PALMINHA@...opsys.com, Ramiro.Oliveira@...opsys.com
Subject: [PATCH v2 1/2] Add Documentation for Media Device, Video Device, and Synopsys DW MIPI CSI-2 Host
Create device tree bindings documentation for Media and Video Device, as well
as the DW MIPI CSI-2 Host.
Signed-off-by: Ramiro Oliveira <roliveir@...opsys.com>
---
.../devicetree/bindings/media/snps,dw-mipi-csi.txt | 37 ++++++++
.../devicetree/bindings/media/snps,plat-ipk.txt | 105 +++++++++++++++++++++
2 files changed, 142 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/snps,dw-mipi-csi.txt
create mode 100644 Documentation/devicetree/bindings/media/snps,plat-ipk.txt
diff --git a/Documentation/devicetree/bindings/media/snps,dw-mipi-csi.txt b/Documentation/devicetree/bindings/media/snps,dw-mipi-csi.txt
new file mode 100644
index 0000000..1caa652
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/snps,dw-mipi-csi.txt
@@ -0,0 +1,37 @@
+Synopsys DesignWare CSI-2 Host controller
+
+Description
+-----------
+
+This HW block is used to receive image coming from an MIPI CSI-2 compatible
+camera.
+
+Required properties:
+- compatible: shall be "snps,dw-mipi-csi"
+- reg : physical base address and size of the device memory mapped
+ registers;
+- interrupts : CSI-2 Host interrupt
+- data-lanes : Number of lanes to be used
+- output-type : Core output to be used (IPI-> 0 or IDI->1 or BOTH->2) These
+ values choose which of the Core outputs will be used, it can be Image Data
+ Interface or Image Pixel Interface.
+- phys, phy-names: List of one PHY specifier and identifier string (as defined
+ in Documentation/devicetree/bindings/phy/phy-bindings.txt). This PHY is a MIPI
+ DPHY working in RX mode.
+
+Optional properties(if in IPI mode):
+- ipi-mode : Mode to be used when in IPI(Camera -> 0 or Automatic -> 1)
+ This property defines if the controller will use the video timings available
+ in the video stream or if it will use pre-defined ones.
+- ipi-color-mode: Bus depth to be used in IPI (48 bits -> 0 or 16 bits -> 1)
+ This property defines the width of the IPI bus.
+- ipi-auto-flush: Data auto-flush (1 -> Yes or 0 -> No). This property defines
+ if the data is automatically flushed in each vsync or if this process is done
+ manually
+- virtual-channel: Virtual channel where data is present when in IPI mode. This
+ property chooses the virtual channel which IPI will use to retrieve the video
+ stream.
+
+The per-board settings:
+ - port sub-node describing a single endpoint connected to the dw-mipi-csi
+ as described in video-interfaces.txt[1].
diff --git a/Documentation/devicetree/bindings/media/snps,plat-ipk.txt b/Documentation/devicetree/bindings/media/snps,plat-ipk.txt
new file mode 100644
index 0000000..50e9279
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/snps,plat-ipk.txt
@@ -0,0 +1,105 @@
+Synopsys DesignWare CSI-2 Host IPK Media Device
+
+The Synopsys DesignWare CSI-2 Host IPK subsystem comprises of multiple
+sub-devices represented by separate device tree nodes. Currently this includes:
+plat-ipk, video-device, and dw-mipi-csi.
+
+The sub-subdevices are defined as child nodes of the common 'camera' node which
+also includes common properties of the whole subsystem not really specific to
+any single sub-device.
+
+Common 'camera' node
+--------------------
+
+Required properties:
+
+- compatible: must be "snps,plat-ipk", "simple-bus"
+
+The 'camera' node must include at least one 'video-device' and one 'dw-mipi-csi'
+child node.
+
+'video-device' device nodes
+-------------------
+
+Required properties:
+
+- compatible: "snps,video-device"
+- dmas, dma-names: List of one DMA specifier and identifier string (as defined
+ in Documentation/devicetree/bindings/dma/dma.txt) per port. Each port
+ requires a DMA channel with the identifier string set to "port" followed by
+ the port index.
+
+Image sensor nodes
+------------------
+
+The sensor device nodes should be added to their control bus controller (e.g.
+I2C0) nodes and linked to a port node in the dw-mipi-csi,using the common video
+interfaces bindings, defined in video-interfaces.txt.
+
+Example:
+
+ i2c@...2000 {
+ compatible = "snps,designware-i2c";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x02000 0x100>;
+ clock-frequency = <400000>;
+ clocks = <&i2cclk>;
+ interrupts =<0>;
+ ov: camera@...6 {
+ compatible = "ovti,ov5647";
+ reg = <0x36>;
+ port {
+ camera_1: endpoint {
+ remote-endpoint = <&csi1_ep1>;
+ clock-lanes = <0>;
+ data-lanes = <1 2 >;
+ };
+ };
+ };
+ };
+
+
+ camera {
+ compatible = "snps,plat-ipk", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+ video_device: video-device@...0000 {
+ compatible = "snps,video-device";
+ dmas = <&axi_vdma_0 0>;
+ dma-names = "vdma0";
+ };
+
+
+ csi2_1: csi2@...3000 {
+ compatible = "snps,dw-mipi-csi";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = < 0x03000 0x7FF>;
+ interrupts = <2>;
+ data-lanes = <2>;
+ output-type = <2>;
+
+ phys = <&mipi_phy_ctrl1 0>;
+ phy-names = "csi2-dphy";
+
+ /*IPI Related Configurations*/
+ ipi-mode = <0>;
+ ipi-color-mode = <0>;
+ ipi-auto-flush = <1>;
+ virtual-channel = <0>;
+
+ /* Camera MIPI CSI-2 (CSI1) */
+ port@1 {
+ reg = <1>;
+ csi1_ep1: endpoint {
+ remote-endpoint = <&camera_1>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+ };
+ };
+
+The dw-mipi-csi device binding is defined in snps,dw-mipi-csi.txt.
--
2.10.2
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