Hello Krzysztof, On 10/30/2014 01:30 PM, Krzysztof Kozlowski wrote: tor_of_get_init_data() function? >> > >> > The regulator_of_get_init_data() searches from dev->of_node or its child >> > node. >> > >> > But dev->of_node is NULL. >> > >> > That's why of_compatible is needed. >> >> Yes but regulator_register() does dev = config->dev and config->dev is set >> to config.dev = iodev->dev in the driver probe function which is the >> pdev->dev.parent (the PMIC struct device) that has an associated of_node. >> >> So, regulator_of_get_init_data() will call of_get_child_by_name() passing >> the PMIC of_node and the sub-node name that contains the regulators. That >> is, whatever was set in desc->regulators_node and that should be enough. > > I missed that one in max77802 (in max77686: config.dev = &pdev->dev). > Now I wonder if it is proper to attach regulators to driver's parent > device. Consider regulator_register, around line 3640: > rdev->dev.parent = dev; > The parent of regulators will be equal to parent of regulator driver - > main MFD driver. > An early version of the max77802 regulator driver also set config.dev to &pdev->dev but then Mark asked me if I was sure that it should not be the MFD device instead. I then read in regulator_register() that the rdev->dev.parent was set to the device passed in config.dev as you said so I was convinced that it should be the parent device instead. Please take a look at [0] for that discussion. Best regards, Javier [0]: https://lkml.org/lkml/2014/6/17/174 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
