On Wed, May 10, 2017 at 9:15 AM, Timur Tabi <ti...@qti.qualcomm.com> wrote: > You need all four patches. The last one is in the tty-next tree: > > https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h=tty-next&id=5a0722b898f851b9ef108ea7babc529e4efc773d
Thanks will cherry pick from there. > > From: Manoj Iyer <manoj.i...@canonical.com> > Date: Wednesday, May 10, 2017 at 9:02 AM > To: Timur Tabi <ti...@qti.qualcomm.com> > Cc: Manoj Iyer <1689...@bugs.launchpad.net> > Subject: Re: What is the command to enable earlycon? > > > > On Wed, May 10, 2017 at 8:42 AM, Timur Tabi <ti...@qti.qualcomm.com> > wrote: >> You need these patches: >> >> tty: pl011: Work around QDF2400 E44 stuck BUSY bit (4.10) >> tty: acpi/spcr: QDF2400 E44 checks for wrong OEM revision (4.11) >> tty: pl011: fix earlycon work-around for QDF2400 erratum 44 (4.11) > > These are in linus's tree or linux-next >> tty: pl011: use "qdf2400_e44" as the earlycon name for QDF2400 >> E44 (4.12) > > But this one is not in linux-next yet. > >> and then it's one of these two: >> >> earlycon=qdf2400_e44,0xff78ed1000 (UART) >> earlycon=qdf2400_e44,0xff78ef1000 (SOL) >> >> Or you can just do "earlycon" without anything after that, but that >> triggers after the ACPI tables have been parsed. >> >> From: Manoj Iyer <manoj.i...@canonical.com> >> Date: Wednesday, May 10, 2017 at 8:30 AM >> To: Timur Tabi <ti...@qti.qualcomm.com> >> Subject: What is the command to enable earlycon? >> >> Timur, >> >> What is the kernel parameter to enable earlycon? I know it changed >> for AW and we have never used it . I need it to test >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1689818 >> >> Thanks >> Manoj Iyer -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1689818 Title: tty: pl011: fix earlycon work-around for QDF2400 erratum 44 Status in linux package in Ubuntu: Incomplete Bug description: [Impact] The work-around for the Qualcomm Datacenter Technologies QDF2400 erratum 44 sets the qdf2400_e44_present" global variable if the work-around is needed. However, this check does not happen until after earlycon is initialized, which means the work-around is not used, and the console hangs as soon as it displays one character. [Test Case] Enable earlycon and boot the kernel. [Regression Potential] This impacts only Qualcomm Datacenter Technologies QDF2400 platforms. [Fix] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e53e597fd4c4a0b6ae58e57d76a240927fd17eaa https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h =tty-testing&id=5a0722b898f851b9ef108ea7babc529e4efc773d To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1689818/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
