Hi Adam,
On Sat, 13 Jul 2019 at 06:52, Adam Ford aford173@gmail.com wrote:
I am trying to improve the OMAP EHCI driver. Currently, I pushed a pending patch which loads a USB host controller device which contains several child nodes.
We search the child nodes to find the compatible flag, then grab the address of that node and initialize the corresponding EHCI controller. I do this because we need some of the info from the parent combined with data from the child to work.
But you should be able to use a driver for the compatible string. The driver can access its parent. Best to let DM bind your drivers if you can.
What I'm trying to do is enhance the feature to support a nop-phy, but to get the phy, I call generic_phy_get_by_index(struct udevice *,...) where dev points to the parent and not the child.
I have an ofnode pointing to the child, but I need to somehow convert the ofnode to a udevice so the phy_get_by_index can search the correct location for the phy list. Any suggestions?
There is device_find_global_by_ofnode() but it is slow. If you know the uclass you can use uclass_get_device_by_ofnode().
My origin patch lacking the phy reference is located: https://patchwork.ozlabs.org/patch/1125016/
adam
Regards, Simon