From: Alyssa Rosenzweig <alyssa@rosenzweig.io>
To: Faith Ekstrand <faith.ekstrand@collabora.com>
Cc: "David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"\"Björn Roy Baron\"" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <benno.lossin@proton.me>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>, "Janne Grunau" <j@jannau.net>,
"Sven Peter" <sven@svenpeter.dev>,
"Jonathan Corbet" <corbet@lwn.net>,
"Sergio Lopez Pascual" <slp@sinrega.org>,
"Ryan Houdek" <sonicadvance1@gmail.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
rust-for-linux <rust-for-linux@vger.kernel.org>,
asahi <asahi@lists.linux.dev>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-doc <linux-doc@vger.kernel.org>,
"Asahi Lina" <lina@asahilina.net>
Subject: Re: [PATCH v3] drm: Add UAPI for the Asahi driver
Date: Sun, 23 Mar 2025 18:22:19 -0400 [thread overview]
Message-ID: <Z-CJmw9BKteSj1Qx@blossom> (raw)
In-Reply-To: <195b582682b.121ba4d5e219032.3109114844776468245@collabora.com>
> > > + /**
> > > + * @user_timestamp_frequency_hz: Timebase frequency for user timestamps
> > > + */
> > > + __u64 user_timestamp_frequency_hz;
> >
> > Why is this different? What are user timestamps and how are they different from GPU timestamps?
In v4, I've made get_time return nanos which should clarify things.
(Since it hides the SoC clock rate from userspace, leaving only the GPU
firmware clock rate and nanoseconds as the two time rates to worry
about.)
next prev parent reply other threads:[~2025-03-23 22:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-14 23:23 [PATCH v3] drm: Add UAPI for the Asahi driver Alyssa Rosenzweig
2025-03-20 19:29 ` Faith Ekstrand
2025-03-20 21:42 ` Faith Ekstrand
2025-03-23 21:18 ` Alyssa Rosenzweig
2025-03-24 0:20 ` Daniel Almeida
2025-03-24 14:10 ` Alyssa Rosenzweig
2025-03-23 21:44 ` Alyssa Rosenzweig
2025-03-23 22:22 ` Alyssa Rosenzweig [this message]
2025-03-23 19:42 ` Alyssa Rosenzweig
2025-03-21 14:24 ` Simona Vetter
2025-03-23 22:48 ` Alyssa Rosenzweig
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=Z-CJmw9BKteSj1Qx@blossom \
--to=alyssa@rosenzweig.io \
--cc=a.hindborg@kernel.org \
--cc=airlied@gmail.com \
--cc=alex.gaynor@gmail.com \
--cc=aliceryhl@google.com \
--cc=asahi@lists.linux.dev \
--cc=benno.lossin@proton.me \
--cc=bjorn3_gh@protonmail.com \
--cc=boqun.feng@gmail.com \
--cc=corbet@lwn.net \
--cc=dri-devel@lists.freedesktop.org \
--cc=faith.ekstrand@collabora.com \
--cc=gary@garyguo.net \
--cc=j@jannau.net \
--cc=lina@asahilina.net \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maarten.lankhorst@linux.intel.com \
--cc=mripard@kernel.org \
--cc=ojeda@kernel.org \
--cc=rust-for-linux@vger.kernel.org \
--cc=simona@ffwll.ch \
--cc=slp@sinrega.org \
--cc=sonicadvance1@gmail.com \
--cc=sven@svenpeter.dev \
--cc=tmgross@umich.edu \
--cc=tzimmermann@suse.de \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).