Hi.
I want to decode the base address of device nodes of my device trees. For example, drivers/serial/ns16550.c uses fdtdec_get_addr() function to decode the "reg" property, but it is not very nice because it does not check "#address-cells". Precisely, we need to check the parent node to get "#address-cells". (If the parent does not have it, we need to search for it towards the root node.) I am looking for something like of_n_addr_cells() and of_n_size_cells() functions of Linux Kernel. I don't think it is feasible in U-Boot because U-Boot handles device tree blobs as they are (as flattened binaries). If we want to get properties of the parenet node, we must parse the DTB from the beginning. Yes, U-Boot actually parses the same DTB over and over again. Any advice? Import drivers/of/* from Linux?? Simon, do you have any good idea to solve this problem by DM? For example, add "address_cells" and "size_cells" members to struct udevice and then modify drivers/core/simple-bus.c to parse "#address-cells" and "#size-cells" and pass them to children. Best Regards Masahiro Yamada _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
