bindings/mtd/mtd-physmap.yaml

1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/mtd/mtd-physmap.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: CFI or JEDEC memory-mapped NOR flash, MTD-RAM (NVRAM...)
10   - Rob Herring <robh@kernel.org>
17   - $ref: mtd.yaml#
18   - $ref: /schemas/memory-controllers/mc-peripheral-props.yaml#
23       - items:
24           - enum:
25               - amd,s29gl01gp
26               - amd,s29gl032a
27               - amd,s29gl256n
28               - amd,s29gl512n
29               - arm,versatile-flash
30               - arm,vexpress-flash
31               - cortina,gemini-flash
32               - cypress,hyperflash
33               - ge,imp3a-firmware-mirror
34               - ge,imp3a-paged-flash
35               - gef,ppc9a-firmware-mirror
36               - gef,ppc9a-paged-flash
37               - gef,sbc310-firmware-mirror
38               - gef,sbc310-paged-flash
39               - gef,sbc610-firmware-mirror
40               - gef,sbc610-paged-flash
41               - intel,28f128j3
42               - intel,dt28f160
43               - intel,ixp4xx-flash
44               - intel,JS28F128
45               - intel,JS28F640
46               - intel,PC28F640P30T85
47               - numonyx,js28f00a
48               - numonyx,js28f128
49               - sst,sst39vf320
50               - xlnx,xps-mch-emc-2.00.a
51           - enum:
52               - cfi-flash
53               - jedec-flash
54       - items:
55           - enum:
56               - cypress,cy7c1019dv33-10zsxi
57               - arm,vexpress-psram
58           - const: mtd-ram
59       - enum:
60           - cfi-flash
61           - jedec-flash
62           - mtd-ram
63           - mtd-rom
68       non-identical chips can be described in one node.
72   bank-width:
73     description: Width (in bytes) of the bank.  Equal to the device width times
78   device-width:
80       Width of a single mtd chip. If omitted, assumed to be equal to 'bank-width'.
84   no-unaligned-direct-access:
92       "no-unaligned-direct-access", the flash will not be exposed directly to
95   linux,mtd-name:
97       Allows specifying the mtd name for retro capability with physmap-flash
98       drivers as boot loader pass the mtd partition via the old device name
99       physmap-flash.
102   use-advanced-sector-protection:
105       Enables support for the advanced sector protection (Spansion: PPB -
108   erase-size:
112   addr-gpios:
119   '#address-cells':
122   '#size-cells':
127   big-endian: true
128   little-endian: true
131   - compatible
132   - reg
138         const: cortina,gemini-flash
146     - syscon
151   - |
154         compatible = "cfi-flash";
156         bank-width = <4>;
157         device-width = <1>;
159         #address-cells = <1>;
160         #size-cells = <1>;
170             read-only;
174   - |
178         compatible = "intel,PC28F640P30T85", "cfi-flash";
181         bank-width = <2>;
183         #address-cells = <1>;
184         #size-cells = <1>;
188             label = "test-part1";
193   - |
196         #address-cells = <2>;
197         #size-cells = <1>;
200             compatible = "mtd-ram";
202             bank-width = <2>;
206   - |
207     /* An example using addr-gpios */
208     #include <dt-bindings/gpio/gpio.h>
211         compatible = "cfi-flash";
213         bank-width = <2>;
214         addr-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
216         #address-cells = <1>;
217         #size-cells = <1>;
222             label = "test-part1";