From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfram Sang Date: Tue, 03 Feb 2015 19:04:42 +0000 Subject: Re: [RFC 0/5] r8a7790: lager: add support for RCLK watchdog Message-Id: <20150203190442.GA32699@katana> MIME-Version: 1 Content-Type: multipart/mixed; boundary="9amGYk9869ThD9tj" List-Id: References: <1422802074-1921-1-git-send-email-wsa@the-dreams.de> In-Reply-To: <1422802074-1921-1-git-send-email-wsa@the-dreams.de> To: linux-sh@vger.kernel.org --9amGYk9869ThD9tj Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Feb 02, 2015 at 12:50:24PM +0100, Geert Uytterhoeven wrote: > Hi Wolfram, >=20 > On Mon, Feb 2, 2015 at 12:24 PM, Wolfram Sang wrote: > >> I've just tried your series on Koelsch, and it suffers from the same p= roblem. > >> Does it work on Lager for both CONFIG_SMP=3Dy and CONFIG_SMP=3Dn? > > > > I didn't. And what a surprise, it fails with SMP=3Dy :( I'll having a > > look... >=20 > Good luck! Weelllll.... I think there are multiple issues and they mostly come from the fact that a watchdog reset does not initialize the RST module. Rebooting even fails when I only use CPU0 with SMP=3Dy. I could fix this very hackish by resetting the A15 boot address (CA15BAR) to the default value in the watchdog probe function. That alone sadly doesn't help. Once I activate the other CPUs, it will still lock up. Pity, but before I get too side-tracked from what I originally wanted to do, it seems that I simply have to run my tests with SMP=3Dn. I guess this also renders the watchdog driver pretty useless for upstream now :( --9amGYk9869ThD9tj Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJU0RvKAAoJEBQN5MwUoCm2KPcP/iahFNYW0NqetHL4CXKUs9O2 MU3ad6KK8aRbucXf+IfOAjYC6cGjV3m7Xw53LgbN80qApIoDlFBhujcE45m1UL6S cDEMcQc+zedXlyo5yuaPw41cyXA7Xpxa8NajUvYmsBTbPlCc9p6/4SGDEhjtwtdJ WolkM7rUSOxEc/j9PRZsk796+2iTTGDBROIboDh58xdDvW8uJ4UoDRtXz/Hz/tRA /qYPjjYiOb7uIvGYd5Wpam1q39zOCbCixpwlVySz3HTEaSyIX4Pld9cBQHyHaH16 boQwNqLLN8pZrRNMO3FyeIsUE3/bMR5GdwTP9ZWnqegMF0xtgcjCkrDZPfalR/g9 fI/SkUNU8aPL4bp3Yeelj5AIJVmf3AzePhMnmn7d9hZPim2CtYgWMDRtO+wZ+uVa eu3zTuQ465OSPwzpdAC3DKbhx3LB5sigxF9UWnoXh6XrWn0XY4bNBYaIWrJn/bXW vQy8UE7GR1ZbW6I6e8orL62Dynw6mAx31QDwu0LuYR/zyDAE2qTXfPo9PSBV70vn 4KX3u+cXN8ELo7KmhRVxo2qEPKNwowWXVrqUxjLQmWhCZFJyuiap61B4DdPmH+3j 3DuupCOdLrrfvJv+8yejotbckfOxTf/6IbrRYM6btPATg5hJv8po/UNi8uLzUvAK 9oESTuudLUPSUwPZGDuP =vIVq -----END PGP SIGNATURE----- --9amGYk9869ThD9tj--