dm814x.h

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    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_H
    7 #define _DT_BINDINGS_PINCTRL_DM814X_H
    8 
    9 #include <dt-bindings/pinctrl/omap.h>
   10 
   11 #undef INPUT_EN
   12 #undef PULL_UP
   13 #undef PULL_ENA
   14 
   15 /*
   16  * Note that dm814x silicon revision 2.1 and older require input enabled
   17  * (bit 18 set) for all 3.3V I/Os to avoid cumulative hardware damage. For
   18  * more info, see errata advisory 2.1.87. We leave bit 18 out of
   19  * 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_OUTPUT
   27 #undef PIN_OUTPUT_PULLUP
   28 #undef PIN_OUTPUT_PULLDOWN
   29 #undef PIN_INPUT
   30 #undef PIN_INPUT_PULLUP
   31 #undef PIN_INPUT_PULLDOWN
   32 
   33 #define PIN_OUTPUT              (PULL_DISABLE)
   34 #define PIN_OUTPUT_PULLUP       (PULL_UP)
   35 #define PIN_OUTPUT_PULLDOWN     0
   36 #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_NONE
   42 #undef PIN_OFF_OUTPUT_HIGH
   43 #undef PIN_OFF_OUTPUT_LOW
   44 #undef PIN_OFF_INPUT_PULLUP
   45 #undef PIN_OFF_INPUT_PULLDOWN
   46 #undef PIN_OFF_WAKEUPENABLE
   47 
   48 #endif
   49

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/include/dt-bindings/pinctrl/dm814x.h

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/include/dt-bindings/pinctrl/dm814x.h