* Haojian Zhuang <haojian.zhuang@xxxxxxxxxx> [130903 20:11]: > > We can see that it'll try to find static mapping. What's the static mapping? > If we define iotable in machine driver, we have the static mapping, just like > debug_ll. If we parse everything from DTS file, it'll always get a new virtual > address from vm area. So it always create a new page mapping even for one > register. I may not follow you here.. But it seems that you've missing something with the static mapping: It's found based on the physical address. So if you create static mappings for your SoC with iotable_init(), those mappings will be available everywhere including drivers when you do ioremap(). Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
