Add first version of the documentation

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/scaler.dot b/scaler.dot
new file mode 100644
index 0000000..3cb2743
--- /dev/null
+++ b/scaler.dot
@@ -0,0 +1,28 @@
+digraph board {
+	size="6"
+	rankdir=LR
+
+	{
+		rank=same
+		sensor [label="{ | IMX477\nsensor | <port0> 0}", shape=Mrecord, style=filled, fillcolor=green]
+		sensor_label [label="Binning &\nskipping", shape=plaintext]
+	}
+
+	{
+		rank=same
+		isp [label="{<port0> 0 | ISP | <port1> 1}", shape=Mrecord, style=filled, fillcolor=green]
+		isp_label [label="Horizontal\naveraging", shape=plaintext]
+	}
+
+	{
+		rank=same
+		scaler [label="{<port0> 0 | scaler | <port1> 1}", shape=Mrecord, style=filled, fillcolor=green]
+		scaler_label [label="Polyphase\nfilter", shape=plaintext]
+	}
+
+	capture [label="DMA", shape=box, style=filled, fillcolor=yellow]
+
+	sensor:port0 -> isp:port0 [style=bold]
+	isp:port1 -> scaler:port0 [style=bold]
+	scaler:port1 -> capture [style=bold]
+}