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1* Qualcomm NAND controller
2
3Required properties:
4- compatible: should be "qcom,ipq806x-nand"
5- reg: MMIO address range
6- clocks: must contain core clock and always on clock
7- clock-names: must contain "core" for the core clock and "aon" for the
8 always on clock
9- dmas: DMA specifier, consisting of a phandle to the ADM DMA
10 controller node and the channel number to be used for
11 NAND. Refer to dma.txt and qcom_adm.txt for more details
12- dma-names: must be "rxtx"
13- qcom,cmd-crci: must contain the ADM command type CRCI block instance
14 number specified for the NAND controller on the given
15 platform
16- qcom,data-crci: must contain the ADM data type CRCI block instance
17 number specified for the NAND controller on the given
18 platform
19- #address-cells: <1> - subnodes give the chip-select number
20- #size-cells: <0>
21
22* NAND chip-select
23
24Each controller may contain one or more subnodes to represent enabled
25chip-selects which (may) contain NAND flash chips. Their properties are as
26follows.
27
28Required properties:
29- compatible: should contain "qcom,nandcs"
30- reg: a single integer representing the chip-select
31 number (e.g., 0, 1, 2, etc.)
32- #address-cells: see partition.txt
33- #size-cells: see partition.txt
34- nand-ecc-strength: see nand.txt
35- nand-ecc-step-size: must be 512. see nand.txt for more details.
36
37Optional properties:
38- nand-bus-width: see nand.txt
39
40Each nandcs device node may optionally contain a 'partitions' sub-node, which
41further contains sub-nodes describing the flash partition mapping. See
42partition.txt for more detail.
43
44Example:
45
46nand@1ac00000 {
47 compatible = "qcom,ebi2-nandc";
48 reg = <0x1ac00000 0x800>;
49
50 clocks = <&gcc EBI2_CLK>,
51 <&gcc EBI2_AON_CLK>;
52 clock-names = "core", "aon";
53
54 dmas = <&adm_dma 3>;
55 dma-names = "rxtx";
56 qcom,cmd-crci = <15>;
57 qcom,data-crci = <3>;
58
59 #address-cells = <1>;
60 #size-cells = <0>;
61
62 nandcs@0 {
63 compatible = "qcom,nandcs";
64 reg = <0>;
65
66 nand-ecc-strength = <4>;
67 nand-ecc-step-size = <512>;
68 nand-bus-width = <8>;
69
70 partitions {
71 compatible = "fixed-partitions";
72 #address-cells = <1>;
73 #size-cells = <1>;
74
75 partition@0 {
76 label = "boot-nand";
77 reg = <0 0x58a0000>;
78 };
79
80 partition@58a0000 {
81 label = "fs-nand";
82 reg = <0x58a0000 0x4000000>;
83 };
84 };
85 };
86};