On Wed, Apr 15, 2015 at 9:34 AM, Catalin Marinas <catalin.marinas@xxxxxxx> wrote: > On Tue, Apr 14, 2015 at 05:48:48PM -0400, Rob Clark wrote: >> Just speaking as an outsider to this topic, but seems like most/all >> tablets/phones/etc ship with signed firmware. Which means for most of >> the population, upgrading the firmware to a new version which did >> support the standard (assuming it existed), isn't really an option on >> our devices, any more than fixing buggy acpi tables is on our >> laptops.. > > I wouldn't expect most population to build their own kernels on > tablets/phones. And even if you could install a custom kernel, mainline > rarely runs on such devices because of tons of out of tree patches (just > look at the Nexus 9 patches that Kumar pointed at; even ignoring the > booting protocol they are extremely far from an upstreamable form). > my point being, that it happens some times.. for example John Stultz's work on nexus7: https://plus.google.com/111524780435806926688/posts/DzvpMLmzQiQ If this had been a year or two in the future and on some 64b snapdragon, and support for devices with non-PSCI fw is rejected, then he'd be stuck. There are folks who are working to get saner, more-upstream kernels working on devices.. and improving kernel infrastructure for device-needs (well, in my neck of the woods, there is drm/kms atomic and dsi/panel framework stuff.. I'm sure other similar things in other kernel domains). And it seems like that is a good thing to encourage, rather than stymie. BR, -R > -- > Catalin -- 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
