Re: [PATCH v8 00/26] Ingenic TCU patchset v8

From: Mathieu Malaterre
Date: Thu Jan 24 2019 - 16:26:26 EST


On Wed, Dec 12, 2018 at 11:09 PM Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote:
> Hi,
> Here's the version 8 and hopefully final version of my patchset, which
> adds support for the Timer/Counter Unit found in JZ47xx SoCs from
> Ingenic.

I can no longer boot my MIPS Creator CI20 with this series (merged

Using screen+ttyUSB, I can see messages stopping at:

[ OK ] Started Cgroup management daemon.
Starting Regular background program processing daemon...
[ OK ] Started Regular background program processing daemon.
Starting System Logging Service...
Starting Provide limited super user privileges to specific users...
Starting Restore /etc/resolv.conf if the system cras...s shut down....
Starting WPA supplicant...
Starting D-Bus System Message Bus...
[ OK ] Started D-Bus System Message Bus.

Nothing really stands out in the error messages. Could you suggest
things to try out to get into a bootable state ?

> The big change is that the timer driver has been simplified. The code to
> dynamically update the system timer or clocksource to a new channel has
> been removed. Now, the system timer and clocksource are provided as
> children nodes in the devicetree, and the TCU channel to use for these
> is deduced from their respective memory resource. The PWM driver will
> also deduce from its memory resources whether a given PWM channel can be
> used, or is reserved for the system timers.
> Kind regards,
> - Paul Cercueil