* Grazvydas Ignotas <notasas@xxxxxxxxx> [150717 04:24]: > On Fri, Jul 17, 2015 at 7:54 AM, Tony Lindgren <tony@xxxxxxxxxxx> wrote: > > * Tony Lindgren <tony@xxxxxxxxxxx> [150716 09:28]: > >> * Grazvydas Ignotas <notasas@xxxxxxxxx> [150716 07:16]: > >> > Hi, > >> > > >> > On Thu, Jul 16, 2015 at 2:59 PM, Tony Lindgren <tony@xxxxxxxxxxx> wrote: > >> > > We've been moving all omap2+ based systems to boot in device tree only > >> > > mode for a few years now. Only omap3 has legacy booting support > >> > > remaining. Most omap3 boards already have related arch/arm/boot/*.dts* > >> > > files for booting with device tree. > >> > > > >> > > This board has support for device tree based booting, and we've been > >> > > printing warnings about the legacy booting being deprecated for a > >> > > few merge cycles now. Let's attempt to remove the legacy booting > >> > > for it. > >> > > > >> > > The reason for removing the legacy booting support now rather than > >> > > later is we can simply revert this patch if necessary if we run > >> > > into some unexpected issues that are not trivial to fix for the > >> > > device tree based booting. > >> > > >> > It seems we lose wifi, backlight, audio and usb host mainline support > >> > with this as pandora's .dts currently lacks all that stuff. > > > > More on that later on, but a question on the vendor kernel first.. > > > >> > That said I'm not aware of any mainline users (everyone seems to be on > >> > our "vendor" kernel), so maybe we can add those later. > > > > What all is keeping people from using mainline kernel on pandora? > > Is it the sgx or are there other reasons too remaining? > > There are multiple things, besides SGX: > - lack of 1GHz support due to lack of ABB/AVS. Meanwhile we have been > running all pandoras at 1GHz for years without ABB/AVS on our kernel > and no problems have been reported by users. > - overclocking support. It seems most DM3730s can do 1.2GHz and all > can do 1.1GHz, running the device at that clock noticeably speeds up > things, so we provide that functionality out of the box. No instances > of SoC damage were reported over the years. > - using aufs for software packages, aufs wasn't merged and probably > will never be > - keypad Fn key handling in the driver to simulate hardware Fn (not > allowed in mainline) > - lack of driver for analog nubs OK yeah the 1GHz mode would be nice to have for sure. > That said there probably are some people who can live without the > above and prefer new features of new mainline kernels. Yes seems that can be done quite easilly :) > >> Hmm wifi should be easy, isn't that just libertas_sdio? > > > > Nope wl1251, we can initialize with pdata-quirks.c for now if it > > does not yet support device tree except for the SPI version. > > The same goes for the other devices too if needed, I'd assume > > the the EHCI is similar to beagle though. > > Yeah maybe I should try to come up with a patch... OK > > And of course we can still wait on removing the pandora board file > > if you want to. Sounds like that may not be needed though because of > > people using "vendor" kernel in this case even with the legacy > > booting? > > Yes if it interferes with other mainline work just go ahead and remove it. OK will do then. Thanks, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
