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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /Documentation/devicetree/bindings/w1 | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/w1')
-rw-r--r-- | Documentation/devicetree/bindings/w1/fsl-imx-owire.yaml | 44 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/w1/omap-hdq.txt | 22 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/w1/w1-gpio.yaml | 43 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/w1/w1.txt | 25 |
4 files changed, 134 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/w1/fsl-imx-owire.yaml b/Documentation/devicetree/bindings/w1/fsl-imx-owire.yaml new file mode 100644 index 000000000..55adea827 --- /dev/null +++ b/Documentation/devicetree/bindings/w1/fsl-imx-owire.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/w1/fsl-imx-owire.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale i.MX One wire bus master controller + +maintainers: + - Martin Fuzzey <mfuzzey@parkeon.com> + +properties: + compatible: + oneOf: + - const: fsl,imx21-owire + - items: + - enum: + - fsl,imx27-owire + - fsl,imx50-owire + - fsl,imx51-owire + - fsl,imx53-owire + - const: fsl,imx21-owire + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/imx5-clock.h> + + owire@63fa4000 { + compatible = "fsl,imx53-owire", "fsl,imx21-owire"; + reg = <0x63fa4000 0x4000>; + clocks = <&clks IMX5_CLK_OWIRE_GATE>; + }; diff --git a/Documentation/devicetree/bindings/w1/omap-hdq.txt b/Documentation/devicetree/bindings/w1/omap-hdq.txt new file mode 100644 index 000000000..913c5f91a --- /dev/null +++ b/Documentation/devicetree/bindings/w1/omap-hdq.txt @@ -0,0 +1,22 @@ +* OMAP HDQ One wire bus master controller + +Required properties: +- compatible : should be "ti,omap3-1w" or "ti,am4372-hdq" +- reg : Address and length of the register set for the device +- interrupts : interrupt line. +- ti,hwmods : "hdq1w" + +Optional properties: +- ti,mode: should be "hdq": HDQ mode "1w": one-wire mode. + If not specified HDQ mode is implied. + +Example: + +- From omap3.dtsi + hdqw1w: 1w@480b2000 { + compatible = "ti,omap3-1w"; + reg = <0x480b2000 0x1000>; + interrupts = <58>; + ti,hwmods = "hdq1w"; + ti,mode = "hdq"; + }; diff --git a/Documentation/devicetree/bindings/w1/w1-gpio.yaml b/Documentation/devicetree/bindings/w1/w1-gpio.yaml new file mode 100644 index 000000000..b02b02237 --- /dev/null +++ b/Documentation/devicetree/bindings/w1/w1-gpio.yaml @@ -0,0 +1,43 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/w1/w1-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Bitbanged GPIO 1-Wire Bus + +maintainers: + - Daniel Mack <zonque@gmail.com> + +properties: + compatible: + const: w1-gpio + + gpios: + minItems: 1 + items: + - description: Data I/O pin + - description: Enable pin for an external pull-up resistor + + linux,open-drain: + type: boolean + description: > + If specified, the data pin is considered in open-drain mode. + +required: + - compatible + - gpios + +additionalProperties: + type: object + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + onewire { + compatible = "w1-gpio"; + gpios = <&gpio 0 GPIO_ACTIVE_HIGH>; + }; + +... diff --git a/Documentation/devicetree/bindings/w1/w1.txt b/Documentation/devicetree/bindings/w1/w1.txt new file mode 100644 index 000000000..05f26b27d --- /dev/null +++ b/Documentation/devicetree/bindings/w1/w1.txt @@ -0,0 +1,25 @@ +Generic devicetree bindings for onewire (w1) busses +=================================================== + +Onewire busses are described through nodes of their master bus controller. +Slave devices are listed as sub-nodes of such master devices. For now, only +one slave is allowed per bus master. + + +Example: + + charger: charger { + compatible = "gpio-charger"; + charger-type = "mains"; + gpios = <&gpio 1 GPIO_ACTIVE_LOW>; + }; + + onewire { + compatible = "w1-gpio"; + gpios = <&gpio 100 0>, <&gpio 101 0>; + + battery { + compatible = "maxim,ds2760"; + power-supplies = <&charger>; + }; + }; |