diff options
| author | Tom Rini <trini@konsulko.com> | 2018-06-17 09:09:40 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-06-17 09:09:40 -0400 |
| commit | 103c45fb0daab924308046454b4aaad4a09237c4 (patch) | |
| tree | dced5f70fb2e8dc9163f9884b518a4cf7c146441 /include/dt-bindings/gpio/gpio.h | |
| parent | a715415bb5948c84cc44c601b193188990f7238b (diff) | |
| parent | 891bf67611e93df3f3a6c451d945a7810435ed13 (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot-sh
Diffstat (limited to 'include/dt-bindings/gpio/gpio.h')
| -rw-r--r-- | include/dt-bindings/gpio/gpio.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/dt-bindings/gpio/gpio.h b/include/dt-bindings/gpio/gpio.h index e6b1e0a808..2cc10ae4bb 100644 --- a/include/dt-bindings/gpio/gpio.h +++ b/include/dt-bindings/gpio/gpio.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * This header provides constants for most GPIO bindings. * @@ -9,7 +10,27 @@ #ifndef _DT_BINDINGS_GPIO_GPIO_H #define _DT_BINDINGS_GPIO_GPIO_H +/* Bit 0 express polarity */ #define GPIO_ACTIVE_HIGH 0 #define GPIO_ACTIVE_LOW 1 +/* Bit 1 express single-endedness */ +#define GPIO_PUSH_PULL 0 +#define GPIO_SINGLE_ENDED 2 + +/* Bit 2 express Open drain or open source */ +#define GPIO_LINE_OPEN_SOURCE 0 +#define GPIO_LINE_OPEN_DRAIN 4 + +/* + * Open Drain/Collector is the combination of single-ended open drain interface. + * Open Source/Emitter is the combination of single-ended open source interface. + */ +#define GPIO_OPEN_DRAIN (GPIO_SINGLE_ENDED | GPIO_LINE_OPEN_DRAIN) +#define GPIO_OPEN_SOURCE (GPIO_SINGLE_ENDED | GPIO_LINE_OPEN_SOURCE) + +/* Bit 3 express GPIO suspend/resume and reset persistence */ +#define GPIO_PERSISTENT 0 +#define GPIO_TRANSITORY 8 + #endif |