On Thu, Sep 20, 2012 at 9:36 PM, Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx> wrote: > If I understand correctly, we would like drivers to be able to read > some common "system" registers to figure out which SoC variant we are > running on. Such feature should normally be provided by code in > arch/arm/mach-*/ and called by drivers, but we are trying to eliminate > all dependencies of driver code on architecture code, correct? So what I think is that any such mechanism would defy the idea with device tree providing all platform configuration, including the ASIC/SoC variant. The only not-so-unelegant idea I have is for the machine to go in and fiddle with the device tree, e.g. add some info into the tree somewhere stating into the nodes which ASIC variant it is. Maybe even modify the compatible value at runtime. But it somehow feels like cracking an egg with a sledgehammer. I think we need to meditate on this. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
