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pinctrl: max77851: add max77851 pinctrl driver
Add duplicate copy of needed linux header files from core kernel k6.1 into nvidia-oot as max77851 pinctrl drivers compilation fails. Bug 200749982 Change-Id: I660e2025e86494e87e5972d16f356efd70720511 Signed-off-by: Shubhi Garg <shgarg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-5.10/+/2595353 Signed-off-by: Bitan Biswas <bbiswas@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2947786 GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
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Documentation/devicetree/bindings/pinctrl/pinctrl-max77851.yaml
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144
Documentation/devicetree/bindings/pinctrl/pinctrl-max77851.yaml
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# SPDX-License-Identifier: GPL-2.0-only
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# SPDX-FileCopyrightText: Copyright (c) 2022-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/pinctrl/pinctrl-max77851.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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maintainers:
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- Joan Na<Joan.na@maximintegrated.com>
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- Shubhi Garg <shgarg@nvidia.com>
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description: |
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Pincontrol driver for MAX77851 Power management IC from Maxim Semiconductor.
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Device has 8 GPIO pins & 4 FPSO pins which can be configured as GPIO as well as the
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special IO functions.
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Please refer file <devicetree/bindings/pinctrl/pinctrl-bindings.txt>
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for details of the common pinctrl bindings used by client devices,
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including the meaning of the phrase "pin configuration node".
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properties:
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# Optional Pinmux properties:
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# --------------------------
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# Following properties are required if default setting of pins are required
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# at boot.
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pinctrl-names:
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description:
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A pinctrl state named per <pinctrl-bindings.txt>.
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patternProperties:
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pinctrl-[0...n]:
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description:
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Properties to contain the phandle for pinctrl states per
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<pinctrl-bindings.txt>.
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The pin configurations are defined as child of the pinctrl states node. Each
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sub-node have following properties:
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required:
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- pins: List of pins. Valid values of pins properties are:
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gpio0, gpio1, gpio2, gpio3, gpio4, gpio5, gpio6, gpio7, fpso0, fpso1, fpso2, fpso3.
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additionalProperties:
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Following are optional properties defined as pinmux DT binding document
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<pinctrl-bindings.txt>. Absence of properties will leave the configuration
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on default.
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function,
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drive-push-pull,
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drive-open-drain,
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bias-pull-up,
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bias-pull-down.
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Valid values for function properties are:
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gpio-high-z
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gpio-input
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gpio-output
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gpio-fps-digital-input
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gpio-fps-digital-output
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src-enable-digital-input
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src-boot-dvs-digital-input
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src-clock-digital-input
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src-fpwm-digital-input
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src-pok-gpio-digital-output
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clk-32k-out
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lb-alarm-output
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o-type-reset
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test-digital-input
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test-digital-output
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test-analog-in-out
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fpso-high-z
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fpso-digital-output
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fpso-fps-digital-output
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fpso-buck-sense
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nrstio-high-z
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nrstio-digital-input
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nrstio-digital-output
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nrstio-fps-digital-output
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nrstio-lb-digital-output
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Theres is also customised properties for the GPIO1, GPIO2 and GPIO3. These
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customised properties are required to configure FPS configuration parameters
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of these GPIOs. Please refer <devicetree/bindings/mfd/max77851.txt> for more
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detail of Flexible Power Sequence (FPS).
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- maxim,pd-slpy-master-slot: FPS Master Power-Up / Sleep Exit
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- maxim,pu-slpx-master-slot: FPS Master Power-Down / Sleep Entry.
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Valid values are:
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- MAX77851_FPS_MASTER_SLOT_0
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FPS Mater is FPS0.
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- MAX77851_FPS_MASTER_SLOT_1
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FPS Mater is FPS1
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- MAX77851_FPS_MASTER_SLOT_2
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FPS Mater is FPS2
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- MAX77851_FPS_MASTER_SLOT_3.
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FPS Mater is FPS2
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- maxim,pu-slot: FPS Power-Up Slot
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- maxim,pd-slot: FPS Power-Down Slot
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- maxim,slpx-slot: FPS Sleep Exit Slot
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- maxim,slpy-slot: FPS Sleep Enter Slot
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Valid values are 0 to F.
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examples:
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- |
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#include <dt-bindings/mfd/max77851.h>
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...
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max77851@3c {
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pinctrl-names = "default";
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pinctrl-0 = <&max77851_default>;
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max77851_default: pinmux@0 {
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pin_gpio0 {
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pins = "gpio0";
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function = "clk-32k-out";
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drive-push-pull = <1>;
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maxim,polarity = <MAX77851_PIN_ACTIVE_HIGH>;
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maxim,input_debounce_filter = <MAX77851_NO_RESYNC_NO_DEB>;
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maxim,input_suppy = <MAX77851_INPUT_VDD>;
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};
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pin_gpio1 {
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pins = "gpio1";
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function = "gpio-fps-digital-output";
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drive-open-drain = <1>;
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maxim,polarity = <MAX77851_PIN_ACTIVE_LOW>;
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maxim,input_debounce_filter = <MAX77851_RESYNC_NO_DEB>;
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maxim,input_suppy = <MAX77851_INPUT_VDD>;
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maxim,pu-slpx-master-slot = <MAX77851_FPS_MASTER_SLOT_1>;
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maxim,pd-slpy-master-slot = <MAX77851_FPS_MASTER_SLOT_1>;
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maxim,pu-slot = <MAX77851_FPS_SLOT_3>;
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maxim,pd-slot = <MAX77851_FPS_SLOT_7>;
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maxim,slpx-slot = <MAX77851_FPS_SLOT_0>;
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maxim,slpy-slot = <MAX77851_FPS_SLOT_1>;
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};
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};
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};
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...
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