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Diffstat (limited to 'Documentation/pinctrl.txt')
| -rw-r--r-- | Documentation/pinctrl.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/pinctrl.txt b/Documentation/pinctrl.txt index eb46b1c0b07a..4431c3e727ba 100644 --- a/Documentation/pinctrl.txt +++ b/Documentation/pinctrl.txt @@ -1043,6 +1043,11 @@ quickly poking some registers. The pins are allocated for your device when you issue the pinctrl_get() call, after this you should be able to see this in the debugfs listing of all pins. +NOTE: the pinctrl system will return -EPROBE_DEFER if it cannot find the +requested pinctrl handles, for example if the pinctrl driver has not yet +registered. Thus make sure that the error path in your driver gracefully +cleans up and is ready to retry the probing later in the startup process. + System pin control hogging ========================== |