50 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * This header provides constants specific to DM814X pinctrl bindings.4 */5 6#ifndef _DT_BINDINGS_PINCTRL_DM814X_H7#define _DT_BINDINGS_PINCTRL_DM814X_H8 9#include <dt-bindings/pinctrl/omap.h>10 11#undef INPUT_EN12#undef PULL_UP13#undef PULL_ENA14 15/*16 * Note that dm814x silicon revision 2.1 and older require input enabled17 * (bit 18 set) for all 3.3V I/Os to avoid cumulative hardware damage. For18 * more info, see errata advisory 2.1.87. We leave bit 18 out of19 * function-mask in dm814x.h and rely on the bootloader for it.20 */21#define INPUT_EN (1 << 18)22#define PULL_UP (1 << 17)23#define PULL_DISABLE (1 << 16)24 25/* update macro depending on INPUT_EN and PULL_ENA */26#undef PIN_OUTPUT27#undef PIN_OUTPUT_PULLUP28#undef PIN_OUTPUT_PULLDOWN29#undef PIN_INPUT30#undef PIN_INPUT_PULLUP31#undef PIN_INPUT_PULLDOWN32 33#define PIN_OUTPUT (PULL_DISABLE)34#define PIN_OUTPUT_PULLUP (PULL_UP)35#define PIN_OUTPUT_PULLDOWN 036#define PIN_INPUT (INPUT_EN | PULL_DISABLE)37#define PIN_INPUT_PULLUP (INPUT_EN | PULL_UP)38#define PIN_INPUT_PULLDOWN (INPUT_EN)39 40/* undef non-existing modes */41#undef PIN_OFF_NONE42#undef PIN_OFF_OUTPUT_HIGH43#undef PIN_OFF_OUTPUT_LOW44#undef PIN_OFF_INPUT_PULLUP45#undef PIN_OFF_INPUT_PULLDOWN46#undef PIN_OFF_WAKEUPENABLE47 48#endif49 50