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
