diff options
Diffstat (limited to 'Documentation/pinctrl.txt')
| -rw-r--r-- | Documentation/pinctrl.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/pinctrl.txt b/Documentation/pinctrl.txt index c0ffd30eb55e..a7929cb47e7c 100644 --- a/Documentation/pinctrl.txt +++ b/Documentation/pinctrl.txt @@ -358,7 +358,12 @@ static struct pinctrl_gpio_range gpio_range = { .gc = &chip; }; -In this case the pin_base property will be ignored. +In this case the pin_base property will be ignored. If the name of a pin +group is known, the pins and npins elements of the above structure can be +initialised using the function pinctrl_get_group_pins(), e.g. for pin +group "foo": + +pinctrl_get_group_pins(pctl, "foo", &gpio_range.pins, &gpio_range.npins); When GPIO-specific functions in the pin control subsystem are called, these ranges will be used to look up the appropriate pin controller by inspecting |