This patch adds DMA sector to Documentation/powerpc/booting-without-of.txt file.
Signed-off-by: Zhang Wei <[EMAIL PROTECTED]>
Signed-off-by: Ebony Zhu <[EMAIL PROTECTED]>
---
Documentation/powerpc/booting-without-of.txt | 60 ++++++++++++++++++++++++++
1 files changed, 60 insertions(+), 0 deletions(-)
diff --git a/Documentation/powerpc/booting-without-of.txt
b/Documentation/powerpc/booting-without-of.txt
index c169299..08c619f 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1790,6 +1790,66 @@ platforms are moved over to use the
flattened-device-tree model.
partition-names = "fs\0firmware";
};
+ k) DMA
+
+ This sector define DMA for dma-engine driver of Freescale
+ MPC8xxx silicon. For each DMA setor, you should define
+ channels included.
+ Please see below 'l) DMA channel' for DMA channel's definition.
+
+ Required properties:
+
+ - compatible : Should be "fsl,mpc8xxx-dma"
+ - reg : Offset and length of the register set for the device
+ - ranges : Should be defined as specified in 1) to describe the
+ DMA controller's register.
+
+ Example:
+ [EMAIL PROTECTED]
+ compatible = "fsl,mpc8xxx-dma";
+ reg = <21000 100>;
+ ranges = <0 21000 1000>;
+ [EMAIL PROTECTED]
+ reg = <100 80>;
+ extended;
+ reserved;
+ interrupt-parent = <&mpic>;
+ interrupts = <14 2>;
+ };
+ [EMAIL PROTECTED]
+ reg = <180 80>;
+ extended;
+ reserved;
+ interrupt-parent = <&mpic>;
+ interrupts = <15 2>;
+ };
+ [EMAIL PROTECTED]
+ reg = <200 80>;
+ extended;
+ interrupt-parent = <&mpic>;
+ interrupts = <16 2>;
+ };
+ [EMAIL PROTECTED]
+ reg = <280 80>;
+ extended;
+ interrupt-parent = <&mpic>;
+ interrupts = <17 2>;
+ };
+ };
+
+ l) DMA channel
+
+ Required properties:
+
+ - reg : Offset and length of the register set for the device
+
+ Recommended properties :
+
+ - extended : Set the DMA channel to work at extended chain mode.
+ If not set, the DMA channel will work at basic
+ chain mode.
+ - reserved : Reserve the DMA channel to device.
+
More devices will be defined as this spec matures.
VII - Specifying interrupt information for devices
--
1.5.1
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