Introduce required basic devicetree parameters for the initial commit of CS40L26. Signed-off-by: Fred Treven <fred.treven@xxxxxxxxxx> --- .../devicetree/bindings/input/cirrus,cs40l26.yaml | 102 +++++++++++++++++++++ MAINTAINERS | 10 ++ 2 files changed, 112 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/cirrus,cs40l26.yaml diff --git a/Documentation/devicetree/bindings/input/cirrus,cs40l26.yaml b/Documentation/devicetree/bindings/input/cirrus,cs40l26.yaml new file mode 100644 index 000000000000..9cbc964ebded --- /dev/null +++ b/Documentation/devicetree/bindings/input/cirrus,cs40l26.yaml @@ -0,0 +1,102 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/cirrus,cs40l26.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Cirrus Logic CS40L26 Boosted Haptic Amplifier + +maintainers: + - Fred Treven <fred.treven@xxxxxxxxxx> + +description: + CS40L26 is a Boosted Haptic Driver with Integrated DSP and Waveform Memory + with Advanced Closed Loop Algorithms and LRA protection + +properties: + compatible: + enum: + - cirrus,cs40l26a + - cirrus,cs40l26b + - cirrus,cs40l27a + - cirrus,cs40l27b + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + reset-gpios: + maxItems: 1 + + VA-supply: + description: Regulator for VA analog voltage + + VP-supply: + description: Regulator for VP peak voltage + + cirrus,bst-ipk-microamp: + description: + Maximum amount of current that can be drawn by the device's boost converter. + multipleOf: 50000 + minimum: 1600000 + maximum: 4800000 + default: 4500000 + + cirrus,bst-ctl-microvolt: + description: Maximum target voltage to which DSP may increase the VBST supply. + multipleOf: 50000 + minimum: 2550000 + maximum: 11000000 + default: 11000000 + + cirrus,bst-exploratory-mode-disable: + description: + Disable boost exploratory mode. + + In exploratory mode the analog maximum peak current limit of 4.5 A + (tolerance of + 160 mA) will be applied. This is required for the + device to successfully detect a boost inductor short. + + Boost exploratory mode allows the device to overshoot the set boost peak + current limit (i.e. if current peak limit is set to 2.5 A to protect the + battery inductor, the current limit will be opened up to 4.5 A for + several milliseconds at boost startup). + This has potential to damage the boost inductor. + + Disabling this mode will prevent this from happening; it will also + prevent the device from detecting boost inductor short errors. + type: boolean + +required: + - compatible + - reg + - interrupts + - reset-gpios + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/input/input.h> + #include <dt-bindings/interrupt-controller/irq.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + cs40l26@58 { + compatible = "cirrus,cs40l26a"; + reg = <0x58>; + interrupt-parent = <&gpio>; + interrupts = <57 IRQ_TYPE_LEVEL_LOW>; + reset-gpios = <&gpio 54 GPIO_ACTIVE_LOW>; + VA-supply = <&dummy_vreg>; + VP-supply = <&dummy_vreg>; + cirrus,bst-ctl-microvolt = <2600000>; + cirrus,bst-ipk-microamp = <1650000>; + cirrus,bst-exploratory-mode-disable; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 2b073facf399..d72ed4957b0b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4926,6 +4926,16 @@ L: netdev@xxxxxxxxxxxxxxx S: Maintained F: drivers/net/ethernet/cirrus/ep93xx_eth.c +CIRRUS LOGIC HAPTICS DRIVER +M: Fred Treven <fred.treven@xxxxxxxxxx> +M: Ben Bright <ben.bright@xxxxxxxxxx> +M: James Ogletree <james.ogletree@xxxxxxxxxx> +L: patches@xxxxxxxxxxxxxxxxxxxxx +S: Supported +W: https://github.com/CirrusLogic/linux-drivers/wiki +T: git https://github.com/CirrusLogic/linux-drivers.git +F: Documentation/devicetree/bindings/input/cirrus,cs40l26.yaml + CIRRUS LOGIC LOCHNAGAR DRIVER M: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx> M: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx> -- 2.7.4
