From: Stephen Warren <swarren@wwwdotorg.org>
To: Alexandre Courbot <acourbot@nvidia.com>, Ben Skeggs <skeggsb@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>,
Eric Brower <ebrower@nvidia.com>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
Ben Skeggs <bskeggs@redhat.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
Terje Bergstrom <tbergstrom@nvidia.com>,
Ken Adams <KAdams@nvidia.com>
Subject: Re: [RFC 10/16] drm/nouveau/timer: skip calibration on GK20A
Date: Wed, 05 Feb 2014 13:27:36 -0700 [thread overview]
Message-ID: <52F29EB8.5040906@wwwdotorg.org> (raw)
In-Reply-To: <52F0A72B.8030900@nvidia.com>
On 02/04/2014 01:39 AM, Alexandre Courbot wrote:
> On 02/04/2014 12:55 PM, Ben Skeggs wrote:
>> On Sat, Feb 1, 2014 at 1:16 PM, Alexandre Courbot
>> <acourbot@nvidia.com> wrote:
>>> GK20A's timer is directly attached to the system timer and cannot be
>>> calibrated. Skip the calibration phase on that chip since the
>>> corresponding registers do not exist.
>> Just a curiosity: What timer resolution does the HW initialise at?
>
> On T124 the timer input is the oscillator clock, which depending on the
> device can run between 12 and 48Mhz (IIUC).
On the one Tegra124 board we support upstream, the crystal is 12MHz. I
believe this is a typical/common value; almost all the Tegra boards we
support upstream run at this rate.
WARNING: multiple messages have this Message-ID (diff)
From: Stephen Warren <swarren@wwwdotorg.org>
To: Alexandre Courbot <acourbot@nvidia.com>, Ben Skeggs <skeggsb@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>,
"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
Alexandre Courbot <gnurou@gmail.com>,
Eric Brower <ebrower@nvidia.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
Terje Bergstrom <tbergstrom@nvidia.com>,
Ken Adams <KAdams@nvidia.com>
Subject: Re: [RFC 10/16] drm/nouveau/timer: skip calibration on GK20A
Date: Wed, 05 Feb 2014 13:27:36 -0700 [thread overview]
Message-ID: <52F29EB8.5040906@wwwdotorg.org> (raw)
In-Reply-To: <52F0A72B.8030900@nvidia.com>
On 02/04/2014 01:39 AM, Alexandre Courbot wrote:
> On 02/04/2014 12:55 PM, Ben Skeggs wrote:
>> On Sat, Feb 1, 2014 at 1:16 PM, Alexandre Courbot
>> <acourbot@nvidia.com> wrote:
>>> GK20A's timer is directly attached to the system timer and cannot be
>>> calibrated. Skip the calibration phase on that chip since the
>>> corresponding registers do not exist.
>> Just a curiosity: What timer resolution does the HW initialise at?
>
> On T124 the timer input is the oscillator clock, which depending on the
> device can run between 12 and 48Mhz (IIUC).
On the one Tegra124 board we support upstream, the crystal is 12MHz. I
believe this is a typical/common value; almost all the Tegra boards we
support upstream run at this rate.
next prev parent reply other threads:[~2014-02-05 20:27 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-01 3:16 [RFC 00/16] drm/nouveau: initial support for GK20A (Tegra K1) Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 01/16] drm/nouveau: handle -EACCES runtime PM return code Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 02/16] drm/nouveau: basic support for platform devices Alexandre Courbot
2014-02-01 3:16 ` [RFC 05/16] drm/nouveau/bar: support " Alexandre Courbot
2014-02-01 3:16 ` [RFC 06/16] drm/nouveau/bar: only ioremap BAR3 if it exists Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 07/16] drm/nouveau/bar/nvc0: support chips without BAR3 Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-04 3:54 ` Ben Skeggs
[not found] ` <CACAvsv7BDDEOJ-C88PRWy7z21c1LMorb5r=f6atDJAWtTN=Luw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-04 8:31 ` Alexandre Courbot
2014-02-04 8:31 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 08/16] drm/nouveau/mc: support platform devices Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 09/16] drm/nouveau/fb: " Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 10/16] drm/nouveau/timer: skip calibration on GK20A Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-04 3:55 ` Ben Skeggs
2014-02-04 8:39 ` Alexandre Courbot
2014-02-04 8:39 ` Alexandre Courbot
2014-02-05 20:27 ` Stephen Warren [this message]
2014-02-05 20:27 ` Stephen Warren
[not found] ` <1391224618-3794-1-git-send-email-acourbot-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-02-01 3:16 ` [RFC 03/16] drm/nouveau: add platform device probing function Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 04/16] drm/nouveau/fifo: support platform devices Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 11/16] drm/nouveau/fifo: allocate usermem as needed Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 12/16] drm/nouveau/fifo: add GK20A support Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
[not found] ` <1391224618-3794-13-git-send-email-acourbot-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-02-04 9:15 ` Daniel Vetter
2014-02-04 9:15 ` Daniel Vetter
[not found] ` <20140204091518.GZ17001-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2014-02-05 1:21 ` Alexandre Courbot
2014-02-05 1:21 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 15/16] drm/nouveau: support GK20A in nouveau_accel_init() Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-02 19:10 ` [RFC 00/16] drm/nouveau: initial support for GK20A (Tegra K1) Ilia Mirkin
2014-02-02 19:10 ` Ilia Mirkin
2014-02-02 19:10 ` Ilia Mirkin
[not found] ` <CAKb7Uvg4Bqy1tHetVZBe=aekFDbgrGygc-evnSXxsoGqgoTA8A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-03 2:44 ` Alexandre Courbot
2014-02-03 2:44 ` Alexandre Courbot
[not found] ` <52EF0294.2090103-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-02-03 3:14 ` Ilia Mirkin
2014-02-03 3:14 ` Ilia Mirkin
[not found] ` <CAKb7UvgSpy7wwpg+Fb8V678DvkrqGdcuciTF136VcktJb9-Wiw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-03 3:41 ` Ben Skeggs
2014-02-03 3:41 ` Ben Skeggs
2014-02-03 3:32 ` Stéphane Marchesin
2014-02-03 17:33 ` Daniel Vetter
2014-02-03 17:33 ` Daniel Vetter
2014-02-04 3:53 ` Ben Skeggs
2014-02-04 3:53 ` Ben Skeggs
[not found] ` <CACAvsv4QFSL8u8hQFr-T_28n3icN_CwDsvLtrcPXx5nErD89wQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-04 8:44 ` Alexandre Courbot
2014-02-04 8:44 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 13/16] drm/nouveau/ibus: add GK20A support Alexandre Courbot
2014-02-02 6:35 ` Ilia Mirkin
2014-02-02 6:35 ` Ilia Mirkin
[not found] ` <CAKb7Uvh7QTn1m0N6ynVxVup9VdA9y7fKJ66nwUDMiy6aHz+_Uw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-02 9:38 ` Alexandre Courbot
2014-02-02 9:38 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 14/16] drm/nouveau/fb: " Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
[not found] ` <1391224618-3794-15-git-send-email-acourbot-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-02-01 13:40 ` Lucas Stach
2014-02-01 13:40 ` Lucas Stach
2014-02-01 23:28 ` Ilia Mirkin
2014-02-01 23:28 ` Ilia Mirkin
[not found] ` <CAKb7UvhJWOtxzYMViuoV6fHU4UR_+j1QTKHw1PoQT_+ykenfYw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-01 23:58 ` Lucas Stach
2014-02-01 23:58 ` Lucas Stach
[not found] ` <1391299106.2985.3.camel-6fNNZcyRN10Uz2mrYu7PvxC15K8ycFmQs0AfqQuZ5sE@public.gmane.org>
2014-02-02 13:43 ` Alexandre Courbot
2014-02-02 13:43 ` Alexandre Courbot
[not found] ` <CAAVeFuLdwoKXsFtcMQ07ozFQXckki86zuB3xNMNk+QbEOtoG0A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-07 14:19 ` Alexandre Courbot
2014-02-07 14:19 ` Alexandre Courbot
2014-02-01 3:16 ` [RFC 16/16] drm/nouveau: support for probing GK20A Alexandre Courbot
2014-02-01 3:16 ` Alexandre Courbot
2014-02-03 11:25 ` [RFC 00/16] drm/nouveau: initial support for GK20A (Tegra K1) David Herrmann
[not found] ` <CANq1E4R=DWp2WBWWBbLHE2FG9HWWP=bM4wvE8etoEr1PAp0+JA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-04 2:47 ` Alexandre Courbot
2014-02-04 2:47 ` Alexandre Courbot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=52F29EB8.5040906@wwwdotorg.org \
--to=swarren@wwwdotorg.org \
--cc=KAdams@nvidia.com \
--cc=acourbot@nvidia.com \
--cc=bskeggs@redhat.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=ebrower@nvidia.com \
--cc=gnurou@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tegra@vger.kernel.org \
--cc=nouveau@lists.freedesktop.org \
--cc=skeggsb@gmail.com \
--cc=tbergstrom@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.