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authorSascha Hauer <s.hauer@pengutronix.de>2020-11-09 12:38:26 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2020-11-09 13:42:10 +0100
commit119c632f12509eab4bc58daf629c4b16fffcedca (patch)
tree34366b3095d957178b46be47f628a3926ad35ac3 /dts/Bindings/eeprom
parent89b766c63f94b5fe94db75a6f197c9e6c0f9da7e (diff)
downloadbarebox-119c632f12509eab4bc58daf629c4b16fffcedca.tar.gz
barebox-119c632f12509eab4bc58daf629c4b16fffcedca.tar.xz
dts: update to v5.10-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/eeprom')
-rw-r--r--dts/Bindings/eeprom/at24.yaml3
-rw-r--r--dts/Bindings/eeprom/at25.txt45
-rw-r--r--dts/Bindings/eeprom/at25.yaml129
3 files changed, 132 insertions, 45 deletions
diff --git a/dts/Bindings/eeprom/at24.yaml b/dts/Bindings/eeprom/at24.yaml
index 4cee72d533..6edfa705b4 100644
--- a/dts/Bindings/eeprom/at24.yaml
+++ b/dts/Bindings/eeprom/at24.yaml
@@ -114,6 +114,9 @@ properties:
- const: renesas,r1ex24128
- const: atmel,24c128
+ label:
+ description: Descriptive name of the EEPROM.
+
reg:
maxItems: 1
diff --git a/dts/Bindings/eeprom/at25.txt b/dts/Bindings/eeprom/at25.txt
deleted file mode 100644
index fcacd97abd..0000000000
--- a/dts/Bindings/eeprom/at25.txt
+++ /dev/null
@@ -1,45 +0,0 @@
-EEPROMs (SPI) compatible with Atmel at25.
-
-Required properties:
-- compatible : Should be "<vendor>,<type>", and generic value "atmel,at25".
- Example "<vendor>,<type>" values:
- "anvo,anv32e61w"
- "microchip,25lc040"
- "st,m95m02"
- "st,m95256"
-
-- reg : chip select number
-- spi-max-frequency : max spi frequency to use
-- pagesize : size of the eeprom page
-- size : total eeprom size in bytes
-- address-width : number of address bits (one of 8, 9, 16, or 24).
- For 9 bits, the MSB of the address is sent as bit 3 of the instruction
- byte, before the address byte.
-
-Optional properties:
-- spi-cpha : SPI shifted clock phase, as per spi-bus bindings.
-- spi-cpol : SPI inverse clock polarity, as per spi-bus bindings.
-- read-only : this parameter-less property disables writes to the eeprom
-- wp-gpios : GPIO to which the write-protect pin of the chip is connected
-
-Obsolete legacy properties can be used in place of "size", "pagesize",
-"address-width", and "read-only":
-- at25,byte-len : total eeprom size in bytes
-- at25,addr-mode : addr-mode flags, as defined in include/linux/spi/eeprom.h
-- at25,page-size : size of the eeprom page
-
-Additional compatible properties are also allowed.
-
-Example:
- eeprom@0 {
- compatible = "st,m95256", "atmel,at25";
- reg = <0>
- spi-max-frequency = <5000000>;
- spi-cpha;
- spi-cpol;
- wp-gpios = <&gpio1 3 0>;
-
- pagesize = <64>;
- size = <32768>;
- address-width = <16>;
- };
diff --git a/dts/Bindings/eeprom/at25.yaml b/dts/Bindings/eeprom/at25.yaml
new file mode 100644
index 0000000000..9810619a2b
--- /dev/null
+++ b/dts/Bindings/eeprom/at25.yaml
@@ -0,0 +1,129 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/eeprom/at25.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: SPI EEPROMs compatible with Atmel's AT25
+
+maintainers:
+ - Christian Eggers <ceggers@arri.de>
+
+properties:
+ $nodename:
+ pattern: "^eeprom@[0-9a-f]{1,2}$"
+
+ # There are multiple known vendors who manufacture EEPROM chips compatible
+ # with Atmel's AT25. The compatible string requires two items where the
+ # 'vendor' and 'model' parts of the first are the actual chip and the second
+ # item is fixed to "atmel,at25". Some existing bindings only have the
+ # "atmel,at25" part and should be fixed by somebody who knows vendor and
+ # product.
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - anvo,anv32e61w
+ - atmel,at25256B
+ - fujitsu,mb85rs1mt
+ - fujitsu,mb85rs64
+ - microchip,at25160bn
+ - microchip,25lc040
+ - st,m95m02
+ - st,m95256
+
+ - const: atmel,at25
+
+ # Please don't use this alternative for new bindings.
+ - items:
+ - const: atmel,at25
+
+ reg:
+ description:
+ Chip select number.
+
+ spi-max-frequency: true
+
+ pagesize:
+ $ref: /schemas/types.yaml#definitions/uint32
+ enum: [1, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072]
+ description:
+ Size of the eeprom page.
+
+ size:
+ $ref: /schemas/types.yaml#definitions/uint32
+ description:
+ Total eeprom size in bytes.
+
+ address-width:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [ 8, 9, 16, 24 ]
+ description:
+ Number of address bits.
+ For 9 bits, the MSB of the address is sent as bit 3 of the instruction
+ byte, before the address byte.
+
+ spi-cpha: true
+
+ spi-cpol: true
+
+ read-only:
+ description:
+ Disable writes to the eeprom.
+ type: boolean
+
+ wp-gpios:
+ maxItems: 1
+ description:
+ GPIO to which the write-protect pin of the chip is connected.
+
+ # Deprecated: at25,byte-len, at25,addr-mode, at25,page-size
+ at25,byte-len:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Total eeprom size in bytes. Deprecated, use "size" property instead.
+ deprecated: true
+
+ at25,addr-mode:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Addr-mode flags, as defined in include/linux/spi/eeprom.h.
+ Deprecated, use "address-width" property instead.
+ deprecated: true
+
+ at25,page-size:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Size of the eeprom page. Deprecated, use "pagesize" property instead.
+ deprecated: true
+
+required:
+ - compatible
+ - reg
+ - spi-max-frequency
+ - pagesize
+ - size
+ - address-width
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ spi0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ eeprom@0 {
+ compatible = "st,m95256", "atmel,at25";
+ reg = <0>;
+ spi-max-frequency = <5000000>;
+ spi-cpha;
+ spi-cpol;
+ wp-gpios = <&gpio1 3 0>;
+
+ pagesize = <64>;
+ size = <32768>;
+ address-width = <16>;
+ };
+ };