From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Cercueil Subject: Re: [PATCH v8 00/26] Ingenic TCU patchset v8 Date: Thu, 24 Jan 2019 18:41:35 -0300 Message-ID: <1548366095.3881.1@crapouillou.net> References: <20181212220922.18759-1-paul@crapouillou.net> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Mathieu Malaterre Cc: Thierry Reding , Rob Herring , Mark Rutland , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , Ezequiel Garcia , PrasannaKumar Muralidharan , linux-pwm@vger.kernel.org, "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , LKML , linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, od@zcrc.me List-Id: devicetree@vger.kernel.org Hi Mathieu, Le jeu. 24 janv. 2019 =E0 18:26, Mathieu Malaterre a=20 =E9crit : > Paul, >=20 > On Wed, Dec 12, 2018 at 11:09 PM Paul Cercueil =20 > wrote: >>=20 >> Hi, >>=20 >> Here's the version 8 and hopefully final version of my patchset,=20 >> which >> adds support for the Timer/Counter Unit found in JZ47xx SoCs from >> Ingenic. >=20 > I can no longer boot my MIPS Creator CI20 with this series (merged > opendingux/for-upstream-timer-v8). >=20 > Using screen+ttyUSB, I can see messages stopping at: >=20 > ... > [ 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=20 > users... > Starting Restore /etc/resolv.conf if the system cras...s=20 > shut down.... > Starting WPA supplicant... > Starting D-Bus System Message Bus... > [ OK ] Started D-Bus System Message Bus. >=20 > Nothing really stands out in the error messages. Could you suggest > things to try out to get into a bootable state ? I'm debugging it right now on jz4740, it seems to happen when the=20 clocksource from the ingenic-timer driver is used. Is it your case? It should not=20 happen if you have CONFIG_INGENIC_OST set. >> The big change is that the timer driver has been simplified. The=20 >> code to >> dynamically update the system timer or clocksource to a new channel=20 >> has >> been removed. Now, the system timer and clocksource are provided as >> children nodes in the devicetree, and the TCU channel to use for=20 >> these >> is deduced from their respective memory resource. The PWM driver=20 >> will >> also deduce from its memory resources whether a given PWM channel=20 >> can be >> used, or is reserved for the system timers. >>=20 >> Kind regards, >> - Paul Cercueil >>=20 =