On Wed, Sep 30, 2020 at 04:07:58PM +0200, Maxime Ripard wrote: > Hi Nathan, > > On Tue, Sep 29, 2020 at 03:15:26PM -0700, Nathan Chancellor wrote: > > On Thu, Sep 03, 2020 at 10:01:52AM +0200, Maxime Ripard wrote: > > > Now that all the drivers have been adjusted for it, let's bring in the > > > necessary device tree changes. > > > > > > The VEC and PV3 are left out for now, since it will require a more > > > specific > > > clock setup. > > > > > > Reviewed-by: Dave Stevenson <dave.steven...@raspberrypi.com> > > > Tested-by: Chanwoo Choi <cw00.c...@samsung.com> > > > Tested-by: Hoegeun Kwon <hoegeun.k...@samsung.com> > > > Tested-by: Stefan Wahren <stefan.wah...@i2se.com> > > > Signed-off-by: Maxime Ripard <max...@cerno.tech> > > > > Apologies if this has already been reported or have a solution but this > > patch (and presumably series) breaks output to the serial console after > > a certain point during init. On Raspbian, I see systemd startup messages > > then the output just turns into complete garbage. It looks like this > > patch is merged first in linux-next, which is why my bisect fell on the > > DRM merge. I am happy to provide whatever information could be helpful > > for debugging this. I am on the latest version of the firmware > > (currently 26620cc9a63c6cb9965374d509479b4ee2c30241). > > Unfortunately, the miniUART is in the same clock tree than the core > clock and will thus have those kind of issues when the core clock is > changed (which is also something that one should expect when using the > DRM or other drivers). > > The only real workaround there would be to switch to one of the PL011 > UARTs. I guess we can also somehow make the UART react to the core clock > frequency changes, but that's going to require some effort > > Maxime
Ack, thank you for the reply! There does not really seem to be a whole ton of documentation around using one of the other PL011 UARTs so for now, I will just revert this commit locally. Cheers, Nathan _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
