1 Freescale Localbus UPM programmed to work with 1 Freescale Localbus UPM programmed to work with NAND flash
2 2
3 Required properties: 3 Required properties:
4 - compatible : "fsl,upm-nand". 4 - compatible : "fsl,upm-nand".
5 - reg : should specify localbus chip select an 5 - reg : should specify localbus chip select and size used for the chip.
6 - fsl,upm-addr-offset : UPM pattern offset for 6 - fsl,upm-addr-offset : UPM pattern offset for the address latch.
7 - fsl,upm-cmd-offset : UPM pattern offset for 7 - fsl,upm-cmd-offset : UPM pattern offset for the command latch.
8 8
9 Optional properties: 9 Optional properties:
10 - fsl,upm-addr-line-cs-offsets : address offse 10 - fsl,upm-addr-line-cs-offsets : address offsets for multi-chip support.
11 The corresponding address lines are us 11 The corresponding address lines are used to select the chip.
12 - gpios : may specify optional GPIOs connected 12 - gpios : may specify optional GPIOs connected to the Ready-Not-Busy pins
13 (R/B#). For multi-chip devices, "n" GP 13 (R/B#). For multi-chip devices, "n" GPIO definitions are required
14 according to the number of chips. 14 according to the number of chips.
15 15
16 Deprecated properties: 16 Deprecated properties:
17 - fsl,upm-wait-flags : add chip-dependent shor 17 - fsl,upm-wait-flags : add chip-dependent short delays after running the
18 UPM pattern (0x1), after writing a dat 18 UPM pattern (0x1), after writing a data byte (0x2) or after
19 writing out a buffer (0x4). 19 writing out a buffer (0x4).
20 - chip-delay : chip dependent delay for transf 20 - chip-delay : chip dependent delay for transferring data from array to
21 read registers (tR). Required if prope 21 read registers (tR). Required if property "gpios" is not used
22 (R/B# pins not connected). 22 (R/B# pins not connected).
23 23
24 Each flash chip described may optionally conta 24 Each flash chip described may optionally contain additional sub-nodes
25 describing partitions of the address space. Se !! 25 describing partitions of the address space. See partition.txt for more
26 detail. 26 detail.
27 27
28 Examples: 28 Examples:
29 29
30 upm@1,0 { 30 upm@1,0 {
31 compatible = "fsl,upm-nand"; 31 compatible = "fsl,upm-nand";
32 reg = <1 0 1>; 32 reg = <1 0 1>;
33 fsl,upm-addr-offset = <16>; 33 fsl,upm-addr-offset = <16>;
34 fsl,upm-cmd-offset = <8>; 34 fsl,upm-cmd-offset = <8>;
35 gpios = <&qe_pio_e 18 0>; 35 gpios = <&qe_pio_e 18 0>;
36 36
37 flash { 37 flash {
38 #address-cells = <1>; 38 #address-cells = <1>;
39 #size-cells = <1>; 39 #size-cells = <1>;
40 compatible = "..."; 40 compatible = "...";
41 41
42 partition@0 { 42 partition@0 {
43 ... 43 ...
44 }; 44 };
45 }; 45 };
46 }; 46 };
47 47
48 upm@3,0 { 48 upm@3,0 {
49 #address-cells = <0>; 49 #address-cells = <0>;
50 #size-cells = <0>; 50 #size-cells = <0>;
51 compatible = "tqc,tqm8548-upm-nand", " 51 compatible = "tqc,tqm8548-upm-nand", "fsl,upm-nand";
52 reg = <3 0x0 0x800>; 52 reg = <3 0x0 0x800>;
53 fsl,upm-addr-offset = <0x10>; 53 fsl,upm-addr-offset = <0x10>;
54 fsl,upm-cmd-offset = <0x08>; 54 fsl,upm-cmd-offset = <0x08>;
55 /* Multi-chip NAND device */ 55 /* Multi-chip NAND device */
56 fsl,upm-addr-line-cs-offsets = <0x0 0x 56 fsl,upm-addr-line-cs-offsets = <0x0 0x200>;
57 57
58 nand@0 { 58 nand@0 {
59 #address-cells = <1>; 59 #address-cells = <1>;
60 #size-cells = <1>; 60 #size-cells = <1>;
61 61
62 partition@0 { 62 partition@0 {
63 label = "fs"; 63 label = "fs";
64 reg = <0x00000000 64 reg = <0x00000000 0x10000000>;
65 }; 65 };
66 }; 66 };
67 }; 67 };
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