On 01/13/2016 03:14 AM, Sebastian Frias wrote: > Hi Peter, > > On 01/12/2016 08:47 PM, Peter Hurley wrote: >> On 01/12/2016 06:22 AM, Sebastian Frias wrote: >>> >>> For the record, I'm using a SoC emulator, and thus do not have a bootloader per se and there are a bunch of other things that I cannot count on. >>> The emulator has the UART pre-setup, so I just need Linux to take over without changing the parameters. >>> Ideally, I would like to have the same image of Linux+DT to start in any instance of the emulator or real chips, regardless of the clock ratios, that's why I sort of need Linux to not change the UART speed, which is quite tricky because there are no clock generators in the emulator. >> >> Got it, thanks for the info. >> Please test the series I just cc'd you on plus the patch I sent >> you yesterday. >> >> That should get you an earlycon up and running on that simulator; >> let me know if it doesn't and we'll go from there. > > Ok, thanks. > I will try as soon as we finish rebasing our changes on top of > "mainline" (or HEAD, or is it "-next"? I don't know how you guys call > the most recent code base for Linux) The basic tree organization is Linus's tree <---- linux-next[date] <----- maintainers' trees (mainline) (next) (eg., Greg's tty tree) The patches I sent you (along with any required modifications during the review cycle) are based on the tty-next branch in Greg's tty tree here git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git As of this email, Greg's tree is based on Linus's 4.4-rc6 which should be stable enough for you to test these patches on. > Actually, I tried yesterday on a 4.1.13 but > "[drivers/tty/serial/earlycon.c:62] earlycon_map()" was still the > last message I got, just as with the OF_EARLYCON_DECLARE hack I had > previously talk about, and so I would like to test on the same > conditions than you, mainline. So just to confirm, you applied "8250: Add Au1x00/RT288x earlycon support" to 4.1.13 and the earlycon didn't come up when you used the kernel command line option like so: earlycon=rt288x,mmio32,0x10700 Is that correct? -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
