50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* This header provides constants specific to DM814X pinctrl bindings.
|
|
*/
|
|
|
|
#ifndef _DT_BINDINGS_PINCTRL_DM814X_H
|
|
#define _DT_BINDINGS_PINCTRL_DM814X_H
|
|
|
|
#include <dt-bindings/pinctrl/omap.h>
|
|
|
|
#undef INPUT_EN
|
|
#undef PULL_UP
|
|
#undef PULL_ENA
|
|
|
|
/*
|
|
* Note that dm814x silicon revision 2.1 and older require input enabled
|
|
* (bit 18 set) for all 3.3V I/Os to avoid cumulative hardware damage. For
|
|
* more info, see errata advisory 2.1.87. We leave bit 18 out of
|
|
* function-mask in dm814x.h and rely on the bootloader for it.
|
|
*/
|
|
#define INPUT_EN (1 << 18)
|
|
#define PULL_UP (1 << 17)
|
|
#define PULL_DISABLE (1 << 16)
|
|
|
|
/* update macro depending on INPUT_EN and PULL_ENA */
|
|
#undef PIN_OUTPUT
|
|
#undef PIN_OUTPUT_PULLUP
|
|
#undef PIN_OUTPUT_PULLDOWN
|
|
#undef PIN_INPUT
|
|
#undef PIN_INPUT_PULLUP
|
|
#undef PIN_INPUT_PULLDOWN
|
|
|
|
#define PIN_OUTPUT (PULL_DISABLE)
|
|
#define PIN_OUTPUT_PULLUP (PULL_UP)
|
|
#define PIN_OUTPUT_PULLDOWN 0
|
|
#define PIN_INPUT (INPUT_EN | PULL_DISABLE)
|
|
#define PIN_INPUT_PULLUP (INPUT_EN | PULL_UP)
|
|
#define PIN_INPUT_PULLDOWN (INPUT_EN)
|
|
|
|
/* undef non-existing modes */
|
|
#undef PIN_OFF_NONE
|
|
#undef PIN_OFF_OUTPUT_HIGH
|
|
#undef PIN_OFF_OUTPUT_LOW
|
|
#undef PIN_OFF_INPUT_PULLUP
|
|
#undef PIN_OFF_INPUT_PULLDOWN
|
|
#undef PIN_OFF_WAKEUPENABLE
|
|
|
|
#endif
|
|
|