include/dt-bindings/pinctrl/dm814x.h

   1 /*
   2  * This header provides constants specific to DM814X pinctrl bindings.
   3  */
   4
   5 #ifndef _DT_BINDINGS_PINCTRL_DM814X_H
   6 #define _DT_BINDINGS_PINCTRL_DM814X_H
   7
   8 #include <dt-bindings/pinctrl/omap.h>
   9
  10 #undef INPUT_EN
  11 #undef PULL_UP
  12 #undef PULL_ENA
  13
  14 /*
  15  * Note that dm814x silicon revision 2.1 and older require input enabled
  16  * (bit 18 set) for all 3.3V I/Os to avoid cumulative hardware damage. For
  17  * more info, see errata advisory 2.1.87. We leave bit 18 out of
  18  * function-mask in dm814x.h and rely on the bootloader for it.
  19  */
  20 #define INPUT_EN                (1 << 18)
  21 #define PULL_UP                 (1 << 17)
  22 #define PULL_DISABLE            (1 << 16)
  23
  24 /* update macro depending on INPUT_EN and PULL_ENA */
  25 #undef PIN_OUTPUT
  26 #undef PIN_OUTPUT_PULLUP
  27 #undef PIN_OUTPUT_PULLDOWN
  28 #undef PIN_INPUT
  29 #undef PIN_INPUT_PULLUP
  30 #undef PIN_INPUT_PULLDOWN
  31
  32 #define PIN_OUTPUT              (PULL_DISABLE)
  33 #define PIN_OUTPUT_PULLUP       (PULL_UP)
  34 #define PIN_OUTPUT_PULLDOWN     0
  35 #define PIN_INPUT               (INPUT_EN | PULL_DISABLE)
  36 #define PIN_INPUT_PULLUP        (INPUT_EN | PULL_UP)
  37 #define PIN_INPUT_PULLDOWN      (INPUT_EN)
  38
  39 /* undef non-existing modes */
  40 #undef PIN_OFF_NONE
  41 #undef PIN_OFF_OUTPUT_HIGH
  42 #undef PIN_OFF_OUTPUT_LOW
  43 #undef PIN_OFF_INPUT_PULLUP
  44 #undef PIN_OFF_INPUT_PULLDOWN
  45 #undef PIN_OFF_WAKEUPENABLE
  46
  47 #endif
  48