On Wed, Mar 09, 2016 at 08:38:59PM +0100, Hans de Goede wrote: > dc1sw is an on/off only regulator and as such it cannot have constraints. > > This is a limitation of the kernel regulator implementation which resolves > supplies on the first regulator_get(), which is done after applying > constraints, and applying the constrains will fail because it calls > _regulator_get_voltage() and _regulator_do_set_voltage() both of which > will fail on a switch regulator when there is no supply (yet). > > This causes registering of all axp22x regulators to fail with the > following errors: > > [ 1.395249] vcc-lcd: failed to get the current voltage(-22) > [ 1.405131] axp20x-regulator axp20x-regulator: Failed to register dc1sw > [ 1.412436] axp20x-regulator: probe of axp20x-regulator failed with error -22 > > This commit removes the constrains on dc1sw / vcc-lcd fixing this problem > note that dcdc1 itself is contrained to the exact same values, so this > does not change anything. > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> Queued this as fixes for 4.6. Thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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