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git://nv-tegra.nvidia.com/device/hardware/nvidia/tegra-public-dts.git
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f888861b5e
Move gpio.h header under dt-bindings directroy. Bug 4078385 Change-Id: I1db6a461b488458ea12d6c3753d70b2f595204fd Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/device/hardware/nvidia/t23x-public-dts/+/2892584 Reviewed-by: svcacv <svcacv@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/device/hardware/nvidia/tegra-public-dts/+/3168928 GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2023, NVIDIA CORPORATION. All rights reserved. */
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/*
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* This header provides constants for most GPIO bindings.
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*
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* Most GPIO bindings include a flags cell as part of the GPIO specifier.
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* In most cases, the format of the flags cell uses the standard values
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* defined in this header.
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*/
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#ifndef _DT_BINDINGS_GPIO_GPIO_H
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#define _DT_BINDINGS_GPIO_GPIO_H
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/* Bit 0 express polarity */
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#define GPIO_ACTIVE_HIGH 0
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#define GPIO_ACTIVE_LOW 1
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/* Bit 1 express single-endedness */
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#define GPIO_PUSH_PULL 0
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#define GPIO_SINGLE_ENDED 2
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/* Bit 2 express Open drain or open source */
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#define GPIO_LINE_OPEN_SOURCE 0
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#define GPIO_LINE_OPEN_DRAIN 4
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/*
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* Open Drain/Collector is the combination of single-ended open drain interface.
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* Open Source/Emitter is the combination of single-ended open source interface.
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*/
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#define GPIO_OPEN_DRAIN (GPIO_SINGLE_ENDED | GPIO_LINE_OPEN_DRAIN)
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#define GPIO_OPEN_SOURCE (GPIO_SINGLE_ENDED | GPIO_LINE_OPEN_SOURCE)
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/* Bit 3 express GPIO suspend/resume and reset persistence */
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#define GPIO_PERSISTENT 0
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#define GPIO_TRANSITORY 8
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/* Bit 4 express pull up */
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#define GPIO_PULL_UP 16
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/* Bit 5 express pull down */
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#define GPIO_PULL_DOWN 32
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/* Bit 6 express pull disable */
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#define GPIO_PULL_DISABLE 64
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#endif
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