3 Marvell Device bus (localbus) configuration.
4 ============================================
6 1. Properties for localbus nodes
12 Value type: <prop-encoded-array> encoded as arbitrary number of localbus
15 Description: ranges property defines values used for mapping devices
16 connected to localbus, in Marvell devices it is used also for
17 setting decoding windows.
19 a) child node address-cells:
20 - first cell: number of bank (chip select)
21 - second cell: (Marvell devices) Target ID for decoding
24 b) parent node address cells:
25 - address offset: used with parent's node base address to
26 specify base address of mapped device
28 c) child node size-cells:
29 - size: defines amount of memory that should be reserved for
38 Description: The bank_count property defines maximum number of banks on
39 localbus node. Bank is most often interpreted as device chip
40 select, but may also describe another device (e.g. SPI flash).
47 compatible = "mrvl,lbc";
50 /* This reflects CPU decode windows setup. */
51 ranges = <0x0 0x2f 0xb2200000 0x00100000
52 0x1 0x3e 0xb2100000 0x00100000
53 0x2 0x3d 0xb0000000 0x02000000
54 0x3 0x3b 0xb2000000 0x00100000>;
57 2. Properties for localbus consumer nodes:
63 Value type: <prop-encoded-array>
65 Description: A standard property required for localbus child nodes. Defines
66 the device memory region.
68 a) first cell: number of bank (chip select)
70 b) address offset: used with address offset from parent's ranges
71 for corresponding bank to specify base address of
74 c) size: defines size of the device memory region
81 compatible = "cfi-flash";
82 reg = <0x0 0x0 0x00100000>;