Lines Matching +full:broken +full:- +full:flash +full:- +full:reset

1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/mtd/jedec,spi-nor.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: SPI NOR flash ST M25Pxx (and similar) serial flash chips
10   - Rob Herring <[email protected]>
13   - $ref: mtd.yaml#
14   - $ref: /schemas/spi/spi-peripheral-props.yaml#
19       - items:
20           - pattern: "^((((micron|spansion|st),)?\
33           - const: jedec,spi-nor
34       - items:
35           - enum:
36               - issi,is25lp016d
37               - micron,mt25qu02g
38               - mxicy,mx25r1635f
39               - mxicy,mx25u6435f
40               - mxicy,mx25v8035f
41               - spansion,s25sl12801
42               - spansion,s25fs512s
43           - const: jedec,spi-nor
44       - const: jedec,spi-nor
49       "jedec,spi-nor" compatible.
58   m25p,fast-read:
66   broken-flash-reset:
69       Some flash devices utilize stateful addressing modes (e.g., for 32-bit
71       sorts of flash don't have a standardized software reset command, and
72       because some systems don't toggle the flash RESET# pin upon system reset
74       properly if the flash is left in the "wrong" state. This boolean flag can
75       be used on such systems, to denote the absence of a reliable reset
78   no-wp:
84       strapped to LOW, the status register nonvolatile bits become read-only and
86       this hardware-protected mode is to drive WP# HIGH. If the WP# signal of the
87       flash device is not connected or is wrongly tied to GND (that includes internal
88       pull-downs) then status register permanently becomes read-only as the SRWD bit
89       cannot be reset. This boolean flag can be used on such systems to avoid setting
93   reset-gpios:
95       A GPIO line connected to the RESET (active low) signal of the device.
96       If "broken-flash-reset" is present then having this property does not
99   vcc-supply:
103   spi-cpol: true
104   spi-cpha: true
107   spi-cpol: [ spi-cpha ]
108   spi-cpha: [ spi-cpol ]
113   - |
114     #include <dt-bindings/gpio/gpio.h>
116         #address-cells = <1>;
117         #size-cells = <0>;
119         flash@0 {
120             compatible = "spansion,m25p80", "jedec,spi-nor";
122             spi-max-frequency = <40000000>;
123             m25p,fast-read;
124             reset-gpios = <&gpio 12 GPIO_ACTIVE_LOW>;