From 3c9edf76791ee127adb44aa441e1ff142cbd5c60 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Fri, 5 Jul 2024 13:54:12 +0300 Subject: dt-bindings: iio: BU27034 => BU27034ANUC The BU27034NUC was cancelled before it entered mass production. It was replaced by a new variant BU27034ANUC (note, added 'A'). The new variant gained a few significant changes, like removal of the 3.rd data channel and dropping some of the gain settings. This means that, from software point of view these ICs are incompatible. Lux calculation based on the data from the sensors needs to be done differently, and on the BU27034ANUC the channel 3 data is missing. Also, the gain setting differencies matter. Unfortunately, the identification register was not changed so there is no safe way for the software to distinguish the variants. According to the ROHM HQ engineers, the old BU27034NUC should not be encountered in the wild. Hence it makes sense to remove the support for the old BU27034NUC and add support for the new BU27034ANUC. Change the compatible in order to not load the incompatible old driver for new sensor (or, if someone had the old sensor, the new driver for it). Drop the compatible for old sensor which should not be in the wild and add a new compatible for the new model with accurate model suffix 'anuc'. Rename the file to match the new compatible. Signed-off-by: Matti Vaittinen Acked-by: Conor Dooley Link: https://patch.msgid.link/c39f9c67b3c07a27d7a13109c7b69cff9cfd2b9b.1720176341.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- .../bindings/iio/light/rohm,bu27034.yaml | 46 ---------------------- .../bindings/iio/light/rohm,bu27034anuc.yaml | 45 +++++++++++++++++++++ 2 files changed, 45 insertions(+), 46 deletions(-) delete mode 100644 Documentation/devicetree/bindings/iio/light/rohm,bu27034.yaml create mode 100644 Documentation/devicetree/bindings/iio/light/rohm,bu27034anuc.yaml (limited to 'Documentation/devicetree/bindings/iio') diff --git a/Documentation/devicetree/bindings/iio/light/rohm,bu27034.yaml b/Documentation/devicetree/bindings/iio/light/rohm,bu27034.yaml deleted file mode 100644 index 30a109a1bf3b..000000000000 --- a/Documentation/devicetree/bindings/iio/light/rohm,bu27034.yaml +++ /dev/null @@ -1,46 +0,0 @@ -# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) -%YAML 1.2 ---- -$id: http://devicetree.org/schemas/iio/light/rohm,bu27034.yaml# -$schema: http://devicetree.org/meta-schemas/core.yaml# - -title: ROHM BU27034 ambient light sensor - -maintainers: - - Matti Vaittinen - -description: | - ROHM BU27034 is an ambient light sesnor with 3 channels and 3 photo diodes - capable of detecting a very wide range of illuminance. Typical application - is adjusting LCD and backlight power of TVs and mobile phones. - https://fscdn.rohm.com/en/products/databook/datasheet/ic/sensor/light/bu27034nuc-e.pdf - -properties: - compatible: - const: rohm,bu27034 - - reg: - maxItems: 1 - - vdd-supply: true - -required: - - compatible - - reg - -additionalProperties: false - -examples: - - | - i2c { - #address-cells = <1>; - #size-cells = <0>; - - light-sensor@38 { - compatible = "rohm,bu27034"; - reg = <0x38>; - vdd-supply = <&vdd>; - }; - }; - -... diff --git a/Documentation/devicetree/bindings/iio/light/rohm,bu27034anuc.yaml b/Documentation/devicetree/bindings/iio/light/rohm,bu27034anuc.yaml new file mode 100644 index 000000000000..29c90ca5b258 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/light/rohm,bu27034anuc.yaml @@ -0,0 +1,45 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/light/rohm,bu27034anuc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ROHM BU27034ANUC ambient light sensor + +maintainers: + - Matti Vaittinen + +description: | + ROHM BU27034ANUC is an ambient light sensor with 2 channels and 2 photo diodes + capable of detecting a very wide range of illuminance. Typical application + is adjusting LCD and backlight power of TVs and mobile phones. + +properties: + compatible: + const: rohm,bu27034anuc + + reg: + maxItems: 1 + + vdd-supply: true + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + light-sensor@38 { + compatible = "rohm,bu27034anuc"; + reg = <0x38>; + vdd-supply = <&vdd>; + }; + }; + +... -- cgit v1.2.3-73-gaa49b