The nbpfaxi dmaengine driver doesn't define any new bindings, it only
uses standard dmaengine bindings and defines 3 flags for the 3rd parameter
of the "dmas" property.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@xxxxxxxxx>
---
v3: split out from v2, no changes otherwise
Documentation/devicetree/bindings/dma/nbpfaxi.txt | 61 +++++++++++++++++++++++
include/dt-bindings/dma/nbpfaxi.h | 20 ++++++++
2 files changed, 81 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/nbpfaxi.txt
create mode 100644 include/dt-bindings/dma/nbpfaxi.h
diff --git a/Documentation/devicetree/bindings/dma/nbpfaxi.txt b/Documentation/devicetree/bindings/dma/nbpfaxi.txt
new file mode 100644
index 0000000..d5e2522
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/nbpfaxi.txt
@@ -0,0 +1,61 @@
+* Renesas "Type-AXI" NBPFAXI* DMA controllers
+
+* DMA controller
+
+Required properties
+
+- compatible: must be one of
+ "renesas,nbpfaxi64dmac1b4"
+ "renesas,nbpfaxi64dmac1b8"
+ "renesas,nbpfaxi64dmac1b16"
+ "renesas,nbpfaxi64dmac4b4"
+ "renesas,nbpfaxi64dmac4b8"
+ "renesas,nbpfaxi64dmac4b16"
+ "renesas,nbpfaxi64dmac8b4"
+ "renesas,nbpfaxi64dmac8b8"
+ "renesas,nbpfaxi64dmac8b16"
+- #dma-cells: must be 2: the first integer is a terminal number, to which this
+ slave is connected, the second one is flags. Flags is a bitmask
+ with the following bits defined:
+
+#define NBPF_SLAVE_RQ_HIGH 1
+#define NBPF_SLAVE_RQ_LOW 2
+#define NBPF_SLAVE_RQ_LEVEL 4
+
+Optional properties:
+
+You can use dma-channels and dma-requests as described in dma.txt, although they
+won't be used, this information is derived from the compatibility string.
+
+Example:
+
+ dma: dma-controller@48000000 {
+ compatible = "renesas,nbpfaxi64dmac8b4";
+ reg = <0x48000000 0x400>;
+ interrupts = <0 12 0x4
+ 0 13 0x4
+ 0 14 0x4
+ 0 15 0x4
+ 0 16 0x4
+ 0 17 0x4
+ 0 18 0x4
+ 0 19 0x4>;
+ #dma-cells = <2>;
+ dma-channels = <8>;
+ dma-requests = <8>;
+ };
+
+* DMA client
+
+Required properties:
+
+dmas and dma-names are required, as described in dma.txt.
+
+Example:
+
+#include <dt-bindings/dma/nbpfaxi.h>
+
+...
+ dmas = <&dma 0 (NBPF_SLAVE_RQ_HIGH | NBPF_SLAVE_RQ_LEVEL)
+ &dma 1 (NBPF_SLAVE_RQ_HIGH | NBPF_SLAVE_RQ_LEVEL)>;
+ dma-names = "rx", "tx";
diff --git a/include/dt-bindings/dma/nbpfaxi.h b/include/dt-bindings/dma/nbpfaxi.h
new file mode 100644
index 0000000..c1a5b9e
--- /dev/null
+++ b/include/dt-bindings/dma/nbpfaxi.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2013-2014 Renesas Electronics Europe Ltd.
+ * Author: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef DT_BINDINGS_NBPFAXI_H
+#define DT_BINDINGS_NBPFAXI_H
+
+/**
+ * Use "#dma-cells = <2>;" with the second integer defining slave DMA flags:
+ */
+#define NBPF_SLAVE_RQ_HIGH 1
+#define NBPF_SLAVE_RQ_LOW 2
+#define NBPF_SLAVE_RQ_LEVEL 4
+
+#endif
--
2.0.0.rc0
--
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