diff options
Diffstat (limited to 'drivers/core/device.c')
| -rw-r--r-- | drivers/core/device.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/core/device.c b/drivers/core/device.c index aeab3836ed..8629df8def 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -462,6 +462,15 @@ int device_probe(struct udevice *dev) * continue regardless of the result of pinctrl. Don't process pinctrl * settings for pinctrl devices since the device may not yet be * probed. + * + * This call can produce some non-intuitive results. For example, on an + * x86 device where dev is the main PCI bus, the pinctrl device may be + * child or grandchild of that bus, meaning that the child will be + * probed here. If the child happens to be the P2SB and the pinctrl + * device is a child of that, then both the pinctrl and P2SB will be + * probed by this call. This works because the DM_FLAG_ACTIVATED flag + * is set just above. However, the PCI bus' probe() method and + * associated uclass methods have not yet been called. */ if (dev->parent && device_get_uclass_id(dev) != UCLASS_PINCTRL) pinctrl_select_state(dev, "default"); |