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49 lines
1.2 KiB
49 lines
1.2 KiB
/* 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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