+Steven
On Wed, Sep 4, 2019 at 1:30 PM Mark Brown broonie@kernel.org wrote:
The panfrost driver requests a supply using regulator_get_optional() but both the name of the supply and the usage pattern suggest that it is being used for the main power for the device and is not at all optional for the device for function, there is no meaningful handling for absent supplies. Such regulators should use the vanilla regulator_get() interface, it will ensure that even if a supply is not described in the system integration one will be provided in software.
I guess commits e21dd290881b ("drm/panfrost: Enable devfreq to work without regulator") and c90f30812a79 ("drm/panfrost: Add missing check for pfdev->regulator") in -next should be reverted or partially reverted?
Rob