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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2014-07-19 12:48:45 +0200
committerVinod Koul <vinod.koul@intel.com>2014-08-04 13:27:35 +0530
commit94c7b6fc7cd1b29d987592ce7eecd902f6728db4 (patch)
tree6c98ac2856d11583da758e7bd82ba42853dbe7f0 /include/dt-bindings
parented64610f29414c0ea782bb6a462a3be72e7704dd (diff)
downloadop-kernel-dev-94c7b6fc7cd1b29d987592ce7eecd902f6728db4.zip
op-kernel-dev-94c7b6fc7cd1b29d987592ce7eecd902f6728db4.tar.gz
dmaengine: add device tree binding documentation for the nbpfaxi driver
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@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/dt-bindings')
-rw-r--r--include/dt-bindings/dma/nbpfaxi.h20
1 files changed, 20 insertions, 0 deletions
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@gmx.de>
+ *
+ * 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
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