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authorIngo Molnar <mingo@elte.hu>2008-07-31 12:43:41 -0400
committerIngo Molnar <mingo@elte.hu>2008-07-31 12:43:41 -0400
commit85e9ca333d03fbd56b9e123c8456f0d98e20faad (patch)
tree7bb15ada5f536950efa23ad60ea9eea60380ca1c /Documentation/powerpc/dts-bindings/fsl/cpm_qe/qe.txt
parenta300bec952127d9a15e666b391bb35c9aecb3002 (diff)
parent6e86841d05f371b5b9b86ce76c02aaee83352298 (diff)
Merge branch 'linus' into timers/hpet
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1* Freescale QUICC Engine module (QE)
2This represents qe module that is installed on PowerQUICC II Pro.
3
4NOTE: This is an interim binding; it should be updated to fit
5in with the CPM binding later in this document.
6
7Basically, it is a bus of devices, that could act more or less
8as a complete entity (UCC, USB etc ). All of them should be siblings on
9the "root" qe node, using the common properties from there.
10The description below applies to the qe of MPC8360 and
11more nodes and properties would be extended in the future.
12
13i) Root QE device
14
15Required properties:
16- compatible : should be "fsl,qe";
17- model : precise model of the QE, Can be "QE", "CPM", or "CPM2"
18- reg : offset and length of the device registers.
19- bus-frequency : the clock frequency for QUICC Engine.
20
21Recommended properties
22- brg-frequency : the internal clock source frequency for baud-rate
23 generators in Hz.
24
25Example:
26 qe@e0100000 {
27 #address-cells = <1>;
28 #size-cells = <1>;
29 #interrupt-cells = <2>;
30 compatible = "fsl,qe";
31 ranges = <0 e0100000 00100000>;
32 reg = <e0100000 480>;
33 brg-frequency = <0>;
34 bus-frequency = <179A7B00>;
35 }
36
37* Multi-User RAM (MURAM)
38
39Required properties:
40- compatible : should be "fsl,qe-muram", "fsl,cpm-muram".
41- mode : the could be "host" or "slave".
42- ranges : Should be defined as specified in 1) to describe the
43 translation of MURAM addresses.
44- data-only : sub-node which defines the address area under MURAM
45 bus that can be allocated as data/parameter
46
47Example:
48
49 muram@10000 {
50 compatible = "fsl,qe-muram", "fsl,cpm-muram";
51 ranges = <0 00010000 0000c000>;
52
53 data-only@0{
54 compatible = "fsl,qe-muram-data",
55 "fsl,cpm-muram-data";
56 reg = <0 c000>;
57 };
58 };