diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
| commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
| tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /include/dt-bindings/pinctrl/dm814x.h | |
| parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) | |
Linux-libre 4.5-gnu
Diffstat (limited to 'include/dt-bindings/pinctrl/dm814x.h')
| -rw-r--r-- | include/dt-bindings/pinctrl/dm814x.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/include/dt-bindings/pinctrl/dm814x.h b/include/dt-bindings/pinctrl/dm814x.h new file mode 100644 index 000000000..0f484273d --- /dev/null +++ b/include/dt-bindings/pinctrl/dm814x.h @@ -0,0 +1,48 @@ +/* + * 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 + |