1===============================================================================
2Freescale Interlaken Look-Aside Controller Device Bindings
3Copyright 2012 Freescale Semiconductor Inc.
4
5CONTENTS
6  - Interlaken Look-Aside Controller (LAC) Node
7  - Example LAC Node
8  - Interlaken Look-Aside Controller (LAC) Software Portal Node
9  - Interlaken Look-Aside Controller (LAC) Software Portal Child Nodes
10  - Example LAC SWP Node with Child Nodes
11
12==============================================================================
13Interlaken Look-Aside Controller (LAC) Node
14
15DESCRIPTION
16
17The Interlaken is a narrow, high speed channelized chip-to-chip interface. To
18facilitate interoperability between a data path device and a look-aside
19co-processor, the Interlaken Look-Aside protocol is defined for short
20transaction-related transfers. Although based on the Interlaken protocol,
21Interlaken Look-Aside is not directly compatible with Interlaken and can be
22considered a different operation mode.
23
24The Interlaken LA controller connects internal platform to Interlaken serial
25interface. It accepts LA command through software portals, which are system
26memory mapped 4KB spaces. The LA commands are then translated into the
27Interlaken control words and data words, which are sent on TX side to TCAM
28through SerDes lanes.
29
30There are two 4KiB spaces defined within the LAC global register memory map.
31There is a full register set at 0x0000-0x0FFF (also known as the "hypervisor"
32version), and a subset at 0x1000-0x1FFF.  The former is a superset of the
33latter, and includes certain registers that should not be accessible to
34partitioned software.  Separate nodes are used for each region, with a phandle
35linking the hypervisor node to the normal operating node.
36
37PROPERTIES
38
39  - compatible
40	Usage: required
41	Value type: <string>
42	Definition: Must include "fsl,interlaken-lac". This represents only
43		those LAC CCSR registers not protected in partitioned
44		software. The version of the device is determined by the LAC
45		IP Block Revision Register (IPBRR0) at offset 0x0BF8.
46
47		Table of correspondences between IPBRR0 values and example
48		chips:
49			Value		Device
50			-----------	-------
51			0x02000100	T4240
52
53		The Hypervisor node has a different compatible. It must include
54		"fsl,interlaken-lac-hv". This node represents the protected
55		LAC register space and is required except inside a partition
56		where access to the hypervisor node is to be denied.
57
58  - fsl,non-hv-node
59	Usage: required in "fsl,interlaken-lac-hv"
60	Value type: <phandle>
61	Definition: Points to the non-protected LAC CCSR mapped register space
62		node.
63
64  - reg
65	Usage: required
66	Value type: <prop-encoded-array>
67	Definition: A standard property. The first resource represents the
68		Interlaken LAC configuration registers.
69
70  - interrupts:
71	Usage: required in non-hv node only
72	Value type: <prop-encoded-array>
73	Definition: Interrupt mapping for Interlaken LAC error IRQ.
74
75EXAMPLE
76	lac: lac@229000 {
77		compatible = "fsl,interlaken-lac"
78		reg = <0x229000 0x1000>;
79		interrupts = <16 2 1 18>;
80	};
81
82	lac-hv@228000 {
83		compatible = "fsl,interlaken-lac-hv"
84		reg = <0x228000 0x1000>;
85		fsl,non-hv-node = <&lac>;
86	};
87
88===============================================================================
89Interlaken Look-Aside Controller (LAC) Software Portal Container Node
90
91DESCRIPTION
92The Interlaken Look-Aside Controller (LAC) utilizes Software Portals to accept
93Interlaken Look-Aside (ILA) commands. The Interlaken LAC software portal
94memory map occupies 128KB of memory space. The software portal memory space is
95intended to be cache-enabled. WIMG for each software space is required to be
960010 if stashing is enabled; otherwise, WIMG can be 0000 or 0010.
97
98PROPERTIES
99
100  - #address-cells
101	Usage: required
102	Value type: <u32>
103	Definition: A standard property. Must have a value of 1.
104
105  - #size-cells
106	Usage: required
107	Value type: <u32>
108	Definition: A standard property. Must have a value of 1.
109
110  - compatible
111	Usage: required
112	Value type: <string>
113	Definition: Must include "fsl,interlaken-lac-portals"
114
115  - ranges
116	Usage: required
117	Value type: <prop-encoded-array>
118	Definition: A standard property. Specifies the address and length
119		of the LAC portal memory space.
120
121===============================================================================
122Interlaken Look-Aside Controller (LAC) Software Portals Child Nodes
123
124DESCRIPTION
125There are up to 24 available software portals with each software portal
126requiring 4KB of consecutive memory within the software portal memory mapped
127space.
128
129PROPERTIES
130
131  - compatible
132	Usage: required
133	Value type: <string>
134	Definition: Must include "fsl,interlaken-lac-portal-vX.Y" where X is
135		the Major version (IP_MJ) found in the LAC IP Block Revision
136		Register (IPBRR0), at offset 0x0BF8, and Y is the Minor version
137		(IP_MN).
138
139		Table of correspondences between version values and example chips:
140		    Value	Device
141		    ------	-------
142		      1.0	T4240
143
144  - reg
145	Usage: required
146	Value type: <prop-encoded-array>
147	Definition: A standard property.  The first resource represents the
148		Interlaken LAC software portal registers.
149
150  - fsl,liodn
151	Value type: <u32>
152	Definition: The logical I/O device number (LIODN) for this device.  The
153		LIODN is a number expressed by this device and used to perform
154		look-ups in the IOMMU (PAMU) address table when performing
155		DMAs. This property is automatically added by u-boot.
156
157===============================================================================
158EXAMPLE
159
160lac-portals {
161	#address-cells = <0x1>;
162	#size-cells = <0x1>;
163	compatible = "fsl,interlaken-lac-portals";
164	ranges = <0x0 0xf 0xf4400000 0x20000>;
165
166	lportal0: lac-portal@0 {
167		compatible = "fsl,interlaken-lac-portal-v1.0";
168		fsl,liodn = <0x204>;
169		reg = <0x0 0x1000>;
170	};
171
172	lportal1: lac-portal@1000 {
173		compatible = "fsl,interlaken-lac-portal-v1.0";
174		fsl,liodn = <0x205>;
175		reg = <0x1000 0x1000>;
176	};
177
178	lportal2: lac-portal@2000 {
179		compatible = "fsl,interlaken-lac-portal-v1.0";
180		fsl,liodn = <0x206>;
181		reg = <0x2000 0x1000>;
182	};
183
184	lportal3: lac-portal@3000 {
185		compatible = "fsl,interlaken-lac-portal-v1.0";
186		fsl,liodn = <0x207>;
187		reg = <0x3000 0x1000>;
188	};
189
190	lportal4: lac-portal@4000 {
191		compatible = "fsl,interlaken-lac-portal-v1.0";
192		fsl,liodn = <0x208>;
193		reg = <0x4000 0x1000>;
194	};
195
196	lportal5: lac-portal@5000 {
197		compatible = "fsl,interlaken-lac-portal-v1.0";
198		fsl,liodn = <0x209>;
199		reg = <0x5000 0x1000>;
200	};
201
202	lportal6: lac-portal@6000 {
203		compatible = "fsl,interlaken-lac-portal-v1.0";
204		fsl,liodn = <0x20A>;
205		reg = <0x6000 0x1000>;
206	};
207
208	lportal7: lac-portal@7000 {
209		compatible = "fsl,interlaken-lac-portal-v1.0";
210		fsl,liodn = <0x20B>;
211		reg = <0x7000 0x1000>;
212	};
213
214	lportal8: lac-portal@8000 {
215		compatible = "fsl,interlaken-lac-portal-v1.0";
216		fsl,liodn = <0x20C>;
217		reg = <0x8000 0x1000>;
218	};
219
220	lportal9: lac-portal@9000 {
221		compatible = "fsl,interlaken-lac-portal-v1.0";
222		fsl,liodn = <0x20D>;
223		reg = <0x9000 0x1000>;
224	};
225
226	lportal10: lac-portal@a000 {
227		compatible = "fsl,interlaken-lac-portal-v1.0";
228		fsl,liodn = <0x20E>;
229		reg = <0xA000 0x1000>;
230	};
231
232	lportal11: lac-portal@b000 {
233		compatible = "fsl,interlaken-lac-portal-v1.0";
234		fsl,liodn = <0x20F>;
235		reg = <0xB000 0x1000>;
236	};
237
238	lportal12: lac-portal@c000 {
239		compatible = "fsl,interlaken-lac-portal-v1.0";
240		fsl,liodn = <0x210>;
241		reg = <0xC000 0x1000>;
242	};
243
244	lportal13: lac-portal@d000 {
245		compatible = "fsl,interlaken-lac-portal-v1.0";
246		fsl,liodn = <0x211>;
247		reg = <0xD000 0x1000>;
248	};
249
250	lportal14: lac-portal@e000 {
251		compatible = "fsl,interlaken-lac-portal-v1.0";
252		fsl,liodn = <0x212>;
253		reg = <0xE000 0x1000>;
254	};
255
256	lportal15: lac-portal@f000 {
257		compatible = "fsl,interlaken-lac-portal-v1.0";
258		fsl,liodn = <0x213>;
259		reg = <0xF000 0x1000>;
260	};
261
262	lportal16: lac-portal@10000 {
263		compatible = "fsl,interlaken-lac-portal-v1.0";
264		fsl,liodn = <0x214>;
265		reg = <0x10000 0x1000>;
266	};
267
268	lportal17: lac-portal@11000 {
269		compatible = "fsl,interlaken-lac-portal-v1.0";
270		fsl,liodn = <0x215>;
271		reg = <0x11000 0x1000>;
272	};
273
274	lportal8: lac-portal@1200 {
275		compatible = "fsl,interlaken-lac-portal-v1.0";
276		fsl,liodn = <0x216>;
277		reg = <0x12000 0x1000>;
278	};
279
280	lportal19: lac-portal@13000 {
281		compatible = "fsl,interlaken-lac-portal-v1.0";
282		fsl,liodn = <0x217>;
283		reg = <0x13000 0x1000>;
284	};
285
286	lportal20: lac-portal@14000 {
287		compatible = "fsl,interlaken-lac-portal-v1.0";
288		fsl,liodn = <0x218>;
289		reg = <0x14000 0x1000>;
290	};
291
292	lportal21: lac-portal@15000 {
293		compatible = "fsl,interlaken-lac-portal-v1.0";
294		fsl,liodn = <0x219>;
295		reg = <0x15000 0x1000>;
296	};
297
298	lportal22: lac-portal@16000 {
299		compatible = "fsl,interlaken-lac-portal-v1.0";
300		fsl,liodn = <0x21A>;
301		reg = <0x16000 0x1000>;
302	};
303
304	lportal23: lac-portal@17000 {
305		compatible = "fsl,interlaken-lac-portal-v1.0";
306		fsl,liodn = <0x21B>;
307		reg = <0x17000 0x1000>;
308	};
309};
310