On Fri, Dec 07, 2018 at 10:30:55AM +0530, Kishon Vijay Abraham I wrote: > Maxime, > > On 06/11/18 8:24 PM, Maxime Ripard wrote: > > Hi, > > > > Here is a set of patches to allow the phy framework consumers to test and > > apply runtime configurations. > > > > This is needed to support more phy classes that require tuning based on > > parameters depending on the current use case of the device, in addition to > > the power state management already provided by the current functions. > > > > A first test bed for that API are the MIPI D-PHY devices. There's a number > > of solutions that have been used so far to support these phy, most of the > > time being an ad-hoc driver in the consumer. > > > > That approach has a big shortcoming though, which is that this is quite > > difficult to deal with consumers integrated with multiple variants of phy, > > of multiple consumers integrated with the same phy. > > > > The latter case can be found in the Cadence DSI bridge, and the CSI > > transceiver and receivers. All of them are integrated with the same phy, or > > can be integrated with different phy, depending on the implementation. > > > > I've looked at all the MIPI DSI drivers I could find, and gathered all the > > parameters I could find. The interface should be complete, and most of the > > drivers can be converted in the future. The current set converts two of > > them: the above mentionned Cadence DSI driver so that the v4l2 drivers can > > use them, and the Allwinner MIPI-DSI driver. > > Are you planning to send one more revision of this series after fixing the > comments? I'll send a new version today. Thanks! Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
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