xref: /freebsd/sys/contrib/device-tree/Bindings/mtd/ti,gpmc-onenand.yaml (revision 02e9120893770924227138ba49df1edb3896112a) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mtd/ti,gpmc-onenand.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: OneNAND over Texas Instruments GPMC bus.
8
9maintainers:
10  - Tony Lindgren <tony@atomide.com>
11  - Roger Quadros <rogerq@kernel.org>
12
13description:
14  GPMC connected OneNAND (found on OMAP boards) are represented
15  as child nodes of the GPMC controller.
16
17properties:
18  $nodename:
19    pattern: "^onenand@[0-9],[0,9]$"
20
21  compatible:
22    const: ti,omap2-onenand
23
24  reg:
25    items:
26      - description: |
27          Chip Select number, register offset and size of
28          OneNAND register window.
29
30  "#address-cells": true
31
32  "#size-cells": true
33
34  int-gpios:
35    description: GPIO specifier for the INT pin.
36
37patternProperties:
38  "@[0-9a-f]+$":
39    $ref: /schemas/mtd/partitions/partition.yaml
40
41allOf:
42  - $ref: /schemas/memory-controllers/ti,gpmc-child.yaml
43
44required:
45  - compatible
46  - reg
47  - "#address-cells"
48  - "#size-cells"
49
50unevaluatedProperties: false
51
52examples:
53  - |
54    gpmc: memory-controller@6e000000 {
55      compatible = "ti,omap3430-gpmc";
56      reg = <0x6e000000 0x02d0>;
57      interrupts = <20>;
58      gpmc,num-cs = <8>;
59      gpmc,num-waitpins = <4>;
60      clocks = <&l3s_clkctrl>;
61      clock-names = "fck";
62      #address-cells = <2>;
63      #size-cells = <1>;
64
65      ranges = <0 0 0x01000000 0x01000000>,   /* 16 MB for OneNAND */
66               <1 0 0x02000000 0x01000000>;   /* 16 MB for smc91c96 */
67
68      onenand@0,0 {
69        compatible = "ti,omap2-onenand";
70        reg = <0 0 0x20000>;    /* CS0, offset 0, IO size 128K */
71        #address-cells = <1>;
72        #size-cells = <1>;
73
74        partition@0 {
75          label = "bootloader";
76          reg = <0x00000000 0x00100000>;
77        };
78
79        partition@100000 {
80          label = "config";
81          reg = <0x00100000 0x002c0000>;
82        };
83      };
84    };
85