mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Romain TISSERAND <romain.tisserand@gmail.com>
To: Chen-Yu Tsai <wens@kernel.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Samuel Holland <samuel@sholland.org>
Cc: Stephen Boyd <sboyd@kernel.org>,
	Brian Masney <bmasney+clk@redhat.com>,
	Jerome Brunet <jbrunet+clk@baylibre.com>,
	Maxime Ripard <mripard@kernel.org>,
	Frank Oltmanns <frank@oltmanns.dev>,
	linux-clk@vger.kernel.org, linux-sunxi@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] clk: sunxi-ng: nkm: avoid 32-bit overflow in rate calculations
Date: Sun, 15 Nov 2026 02:20:59 +0100	[thread overview]
Message-ID: <20261115012059.1022197-1-romain.tisserand@gmail.com> (raw)
In-Reply-To: <20261101203336.1360239-1-romain.tisserand@gmail.com>

Hi,

Gentle ping on this fix, sent two weeks ago. It still applies as is on
sunxi/clk-for-7.5 and on 7.4-rc3.

On 32-bit sunxi the N-K-M rate math wraps above 4.29 GHz, so the clock
framework reports half the real pll-mipi rate on the A33 (594 MHz
programmed, 287 MHz reported), which broke the PocketGo S30 panel. Any
comment, or could it go in for 7.5?

Thanks,
Romain

  reply	other threads:[~2026-11-15  1:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-01 20:33 Romain TISSERAND
2026-11-15  1:20 ` Romain TISSERAND [this message]
2026-11-15  7:03 ` Jernej Škrabec

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=20261115012059.1022197-1-romain.tisserand@gmail.com \
    --to=romain.tisserand@gmail.com \
    --cc=bmasney+clk@redhat.com \
    --cc=frank@oltmanns.dev \
    --cc=jbrunet+clk@baylibre.com \
    --cc=jernej.skrabec@gmail.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-clk@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-sunxi@lists.linux.dev \
    --cc=mripard@kernel.org \
    --cc=samuel@sholland.org \
    --cc=sboyd@kernel.org \
    --cc=wens@kernel.org \
    /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
all inboxes | Powered by JetHome®