xref: /openbmc/linux/Documentation/devicetree/bindings/powerpc/fsl/ecm.txt (revision 3eb66e91a25497065c5322b1268cbc3953642227)
1*d524dac9SGrant Likely=====================================================================
2*d524dac9SGrant LikelyE500 LAW & Coherency Module Device Tree Binding
3*d524dac9SGrant LikelyCopyright (C) 2009 Freescale Semiconductor Inc.
4*d524dac9SGrant Likely=====================================================================
5*d524dac9SGrant Likely
6*d524dac9SGrant LikelyLocal Access Window (LAW) Node
7*d524dac9SGrant Likely
8*d524dac9SGrant LikelyThe LAW node represents the region of CCSR space where local access
9*d524dac9SGrant Likelywindows are configured.  For ECM based devices this is the first 4k
10*d524dac9SGrant Likelyof CCSR space that includes CCSRBAR, ALTCBAR, ALTCAR, BPTR, and some
11*d524dac9SGrant Likelynumber of local access windows as specified by fsl,num-laws.
12*d524dac9SGrant Likely
13*d524dac9SGrant LikelyPROPERTIES
14*d524dac9SGrant Likely
15*d524dac9SGrant Likely  - compatible
16*d524dac9SGrant Likely      Usage: required
17*d524dac9SGrant Likely      Value type: <string>
18*d524dac9SGrant Likely      Definition: Must include "fsl,ecm-law"
19*d524dac9SGrant Likely
20*d524dac9SGrant Likely  - reg
21*d524dac9SGrant Likely      Usage: required
22*d524dac9SGrant Likely      Value type: <prop-encoded-array>
23*d524dac9SGrant Likely      Definition: A standard property.  The value specifies the
24*d524dac9SGrant Likely          physical address offset and length of the CCSR space
25*d524dac9SGrant Likely          registers.
26*d524dac9SGrant Likely
27*d524dac9SGrant Likely  - fsl,num-laws
28*d524dac9SGrant Likely      Usage: required
29*d524dac9SGrant Likely      Value type: <u32>
30*d524dac9SGrant Likely      Definition: The value specifies the number of local access
31*d524dac9SGrant Likely          windows for this device.
32*d524dac9SGrant Likely
33*d524dac9SGrant Likely=====================================================================
34*d524dac9SGrant Likely
35*d524dac9SGrant LikelyE500 Coherency Module Node
36*d524dac9SGrant Likely
37*d524dac9SGrant LikelyThe E500 LAW node represents the region of CCSR space where ECM config
38*d524dac9SGrant Likelyand error reporting registers exist, this is the second 4k (0x1000)
39*d524dac9SGrant Likelyof CCSR space.
40*d524dac9SGrant Likely
41*d524dac9SGrant LikelyPROPERTIES
42*d524dac9SGrant Likely
43*d524dac9SGrant Likely  - compatible
44*d524dac9SGrant Likely      Usage: required
45*d524dac9SGrant Likely      Value type: <string>
46*d524dac9SGrant Likely      Definition: Must include "fsl,CHIP-ecm", "fsl,ecm" where
47*d524dac9SGrant Likely      CHIP is the processor (mpc8572, mpc8544, etc.)
48*d524dac9SGrant Likely
49*d524dac9SGrant Likely  - reg
50*d524dac9SGrant Likely      Usage: required
51*d524dac9SGrant Likely      Value type: <prop-encoded-array>
52*d524dac9SGrant Likely      Definition: A standard property.  The value specifies the
53*d524dac9SGrant Likely          physical address offset and length of the CCSR space
54*d524dac9SGrant Likely          registers.
55*d524dac9SGrant Likely
56*d524dac9SGrant Likely   - interrupts
57*d524dac9SGrant Likely      Usage: required
58*d524dac9SGrant Likely      Value type: <prop-encoded-array>
59*d524dac9SGrant Likely
60*d524dac9SGrant Likely=====================================================================
61