Anton Vorontsov wrote: > Can we not introduce new pio-maps in the device trees? There > were debates regarding this, and if I understood everything > correctly, pio-maps considered as a bad taste. Better > do bunch of par_io_config_pin() in the board file. Better > yet fixup the firmware (u-boot) to set up dedicated pins > correctly.
I'm on the fence with respect to pio-maps vs. par_io_config_pin() calls. The problem is that the configuration of these pins is board-specific, but pins are used by devices. A device driver can't call par_io_config_pin(), because the calls are different depending on which SoC and which UCC you're using. The platform code can't call par_io_config_pin(), because that configuration depends on which drivers are loaded. In other words, the pin configurations are dependent on the UCC configurations, and the UCC configurations are stored in the device tree. So it makes sense to put the pin configurations in the device tree, too. -- Timur Tabi Linux kernel developer at Freescale _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
