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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/include/dt-bindings/pinctrl/dm814x.h
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/* SPDX-License-Identifier: GPL-2.0 */

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/*

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 * This header provides constants specific to DM814X pinctrl bindings.

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 */

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#ifndef _DT_BINDINGS_PINCTRL_DM814X_H

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#define _DT_BINDINGS_PINCTRL_DM814X_H

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#include <dt-bindings/pinctrl/omap.h>

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#undef INPUT_EN

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#undef PULL_UP

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#undef PULL_ENA

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/*

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 * Note that dm814x silicon revision 2.1 and older require input enabled

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 * (bit 18 set) for all 3.3V I/Os to avoid cumulative hardware damage. For

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 * more info, see errata advisory 2.1.87. We leave bit 18 out of

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 * function-mask in dm814x.h and rely on the bootloader for it.

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 */

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#define INPUT_EN		(1 << 18)

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#define PULL_UP			(1 << 17)

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#define PULL_DISABLE		(1 << 16)

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/* update macro depending on INPUT_EN and PULL_ENA */

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#undef PIN_OUTPUT

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#undef PIN_OUTPUT_PULLUP

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#undef PIN_OUTPUT_PULLDOWN

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#undef PIN_INPUT

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#undef PIN_INPUT_PULLUP

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#undef PIN_INPUT_PULLDOWN

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#define PIN_OUTPUT		(PULL_DISABLE)

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#define PIN_OUTPUT_PULLUP	(PULL_UP)

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#define PIN_OUTPUT_PULLDOWN	0

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#define PIN_INPUT		(INPUT_EN | PULL_DISABLE)

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#define PIN_INPUT_PULLUP	(INPUT_EN | PULL_UP)

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#define PIN_INPUT_PULLDOWN	(INPUT_EN)

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/* undef non-existing modes */

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#undef PIN_OFF_NONE

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#undef PIN_OFF_OUTPUT_HIGH

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#undef PIN_OFF_OUTPUT_LOW

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#undef PIN_OFF_INPUT_PULLUP

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#undef PIN_OFF_INPUT_PULLDOWN

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#undef PIN_OFF_WAKEUPENABLE

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#endif

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