David Daney wrote: >> >> The problem is that we don't normally consider the FPGA node to be a bus, >> so its child nodes won't get probed. That's why I have this: >> > > That would seem to be a mistake/error.
Maybe I'm not explaining myself well. A node that has children will not automatically probe the children unless something in arch code registers the parent as a bus. If you look in corenet_ds.c, you'll see what we do with array of_device_ids[]. We list all of the nodes that are buses. The mdio-mux root-level nodes that I have today won't work unless I add .compatible = "mdio-mux" to of_device_ids[]. > > You should be able to arrive at any directly addressable register by > walking down the tree to the children and applying any "ranges" properties > at each node. The OF infrastructure will take care of resolving all the > addresses and you get rid of much of the code you added to duplicate its > function. That only works for buses that are already registered. I think if I add "simple-bus" to the compatible of the FPGA node, it will work. I'll try that tomorrow. -- Timur Tabi Linux kernel developer at Freescale _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
