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      1 /*	$NetBSD: dm814x.h,v 1.1.1.2 2017/11/30 19:40:51 jmcneill Exp $	*/
      2 
      3 /* SPDX-License-Identifier: GPL-2.0 */
      4 /*
      5  * This header provides constants specific to DM814X pinctrl bindings.
      6  */
      7 
      8 #ifndef _DT_BINDINGS_PINCTRL_DM814X_H
      9 #define _DT_BINDINGS_PINCTRL_DM814X_H
     10 
     11 #include <dt-bindings/pinctrl/omap.h>
     12 
     13 #undef INPUT_EN
     14 #undef PULL_UP
     15 #undef PULL_ENA
     16 
     17 /*
     18  * Note that dm814x silicon revision 2.1 and older require input enabled
     19  * (bit 18 set) for all 3.3V I/Os to avoid cumulative hardware damage. For
     20  * more info, see errata advisory 2.1.87. We leave bit 18 out of
     21  * function-mask in dm814x.h and rely on the bootloader for it.
     22  */
     23 #define INPUT_EN		(1 << 18)
     24 #define PULL_UP			(1 << 17)
     25 #define PULL_DISABLE		(1 << 16)
     26 
     27 /* update macro depending on INPUT_EN and PULL_ENA */
     28 #undef PIN_OUTPUT
     29 #undef PIN_OUTPUT_PULLUP
     30 #undef PIN_OUTPUT_PULLDOWN
     31 #undef PIN_INPUT
     32 #undef PIN_INPUT_PULLUP
     33 #undef PIN_INPUT_PULLDOWN
     34 
     35 #define PIN_OUTPUT		(PULL_DISABLE)
     36 #define PIN_OUTPUT_PULLUP	(PULL_UP)
     37 #define PIN_OUTPUT_PULLDOWN	0
     38 #define PIN_INPUT		(INPUT_EN | PULL_DISABLE)
     39 #define PIN_INPUT_PULLUP	(INPUT_EN | PULL_UP)
     40 #define PIN_INPUT_PULLDOWN	(INPUT_EN)
     41 
     42 /* undef non-existing modes */
     43 #undef PIN_OFF_NONE
     44 #undef PIN_OFF_OUTPUT_HIGH
     45 #undef PIN_OFF_OUTPUT_LOW
     46 #undef PIN_OFF_INPUT_PULLUP
     47 #undef PIN_OFF_INPUT_PULLDOWN
     48 #undef PIN_OFF_WAKEUPENABLE
     49 
     50 #endif
     51 
     52