diff options
Diffstat (limited to 'include/linux/pinctrl/pinconf-generic.h')
| -rw-r--r-- | include/linux/pinctrl/pinconf-generic.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index 10ad996afee4..48aa4ba7b089 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -41,7 +41,10 @@ * impedance to GROUND). If the argument is != 0 pull-down is enabled, * if it is 0, pull-down is total, i.e. the pin is connected to GROUND. * @PIN_CONFIG_BIAS_PULL_PIN_DEFAULT: the pin will be pulled up or down based - * on embedded knowledge of the controller, like current mux function. + * on embedded knowledge of the controller hardware, like current mux + * function. The pull direction and possibly strength too will normally + * be decided completely inside the hardware block and not be readable + * from the kernel side. * If the argument is != 0 pull up/down is enabled, if it is 0, the * configuration is ignored. The proper way to disable it is to use * @PIN_CONFIG_BIAS_DISABLE. |