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50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/* 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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