From 29a702dcf47c1193a5e8951a67f9366533f9a3a5 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sat, 31 Oct 2020 13:41:09 +0000 Subject: dt-bindings:iio:temperature:maxim_thermocouple.txt to maxim,max31855k.yaml Given we already have another maxim thermocouple driver that isn't covered by this binding it seems a better idea to chose to name it after a specific part. I added an additional example for the maxim,max6755 to illustrate the need for spi-cpha for that part. Signed-off-by: Jonathan Cameron Reviewed-by: Rob Herring Acked-by: Matt Ranostay Link: https://lore.kernel.org/r/20201031134110.724233-29-jic23@kernel.org --- .../bindings/iio/temperature/maxim,max31855k.yaml | 76 ++++++++++++++++++++++ .../iio/temperature/maxim_thermocouple.txt | 24 ------- 2 files changed, 76 insertions(+), 24 deletions(-) create mode 100644 Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml delete mode 100644 Documentation/devicetree/bindings/iio/temperature/maxim_thermocouple.txt diff --git a/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml b/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml new file mode 100644 index 000000000000..9969bac66aa1 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml @@ -0,0 +1,76 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/temperature/maxim,max31855k.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Maxim MAX31855 and similar thermocouples + +maintainers: + - Matt Ranostay + +description: | + https://datasheets.maximintegrated.com/en/ds/MAX6675.pdf + https://datasheets.maximintegrated.com/en/ds/MAX31855.pdf + +properties: + compatible: + description: + The generic maxim,max31855 compatible is deprecated in favour of + the thermocouple type specific variants. + enum: + - maxim,max6675 + - maxim,max31855 + - maxim,max31855k + - maxim,max31855j + - maxim,max31855n + - maxim,max31855s + - maxim,max31855t + - maxim,max31855e + - maxim,max31855r + + reg: + maxItems: 1 + + spi-max-frequency: true + spi-cpha: true + +required: + - compatible + - reg + +allOf: + - if: + properties: + compatible: + contains: + enum: + - maxim,max6675 + then: + required: + - spi-cpha + else: + properties: + spi-cpha: false + +additionalProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + temp-sensor@0 { + compatible = "maxim,max31855k"; + reg = <0>; + spi-max-frequency = <4300000>; + }; + temp-sensor@1 { + compatible = "maxim,max6675"; + reg = <1>; + spi-max-frequency = <4300000>; + spi-cpha; + }; + }; +... diff --git a/Documentation/devicetree/bindings/iio/temperature/maxim_thermocouple.txt b/Documentation/devicetree/bindings/iio/temperature/maxim_thermocouple.txt deleted file mode 100644 index bb85cd0e039c..000000000000 --- a/Documentation/devicetree/bindings/iio/temperature/maxim_thermocouple.txt +++ /dev/null @@ -1,24 +0,0 @@ -Maxim thermocouple support - -* https://datasheets.maximintegrated.com/en/ds/MAX6675.pdf -* https://datasheets.maximintegrated.com/en/ds/MAX31855.pdf - -Required properties: - - - compatible: must be "maxim,max6675" or one of the following: - "maxim,max31855k", "maxim,max31855j", "maxim,max31855n", - "maxim,max31855s", "maxim,max31855t", "maxim,max31855e", - "maxim,max31855r"; the generic "max,max31855" is deprecated. - - reg: SPI chip select number for the device - - spi-max-frequency: must be 4300000 - - spi-cpha: must be defined for max6675 to enable SPI mode 1 - - Refer to spi/spi-bus.txt for generic SPI slave bindings. - -Example: - - max31855@0 { - compatible = "maxim,max31855k"; - reg = <0>; - spi-max-frequency = <4300000>; - }; -- cgit v1.2.3