From: Timur Tabi <timur-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
To: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
Christopher Covington
<cov-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Cc: Florian Fainelli
<f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Gilad Avidov <gavidov-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
sdharia-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
shankerd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org,
vikrams-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org
Subject: Re: [PATCH] net: emac: emac gigabit ethernet controller driver
Date: Tue, 15 Dec 2015 09:17:00 -0600 [thread overview]
Message-ID: <56702EEC.8000506@codeaurora.org> (raw)
In-Reply-To: <1594472.ixZvj6PYdz@wuerfel>
Arnd Bergmann wrote:
> We generally want to use readl/writel rather than the relaxed versions,
> unless it is in performance-critical code.
What about if we have 20+ writes in a row, for example, when
initializing a part? I've seen code like this:
writel_relaxed(...);
writel_relaxed(...);
writel_relaxed(...);
...
writel(...); // HW now inited, so enable
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the
Code Aurora Forum, hosted by The Linux Foundation.
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WARNING: multiple messages have this Message-ID (diff)
From: Timur Tabi <timur@codeaurora.org>
To: Arnd Bergmann <arnd@arndb.de>,
Christopher Covington <cov@codeaurora.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
Gilad Avidov <gavidov@codeaurora.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
sdharia@codeaurora.org, shankerd@codeaurora.org,
gregkh@linuxfoundation.org, vikrams@codeaurora.org
Subject: Re: [PATCH] net: emac: emac gigabit ethernet controller driver
Date: Tue, 15 Dec 2015 09:17:00 -0600 [thread overview]
Message-ID: <56702EEC.8000506@codeaurora.org> (raw)
In-Reply-To: <1594472.ixZvj6PYdz@wuerfel>
Arnd Bergmann wrote:
> We generally want to use readl/writel rather than the relaxed versions,
> unless it is in performance-critical code.
What about if we have 20+ writes in a row, for example, when
initializing a part? I've seen code like this:
writel_relaxed(...);
writel_relaxed(...);
writel_relaxed(...);
...
writel(...); // HW now inited, so enable
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the
Code Aurora Forum, hosted by The Linux Foundation.
next prev parent reply other threads:[~2015-12-15 15:17 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-15 0:19 [PATCH] net: emac: emac gigabit ethernet controller driver Gilad Avidov
2015-12-15 0:19 ` Gilad Avidov
2015-12-15 1:39 ` Florian Fainelli
2015-12-15 14:30 ` Christopher Covington
[not found] ` <567023F8.80302-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-12-15 14:50 ` Arnd Bergmann
2015-12-15 14:50 ` Arnd Bergmann
2015-12-15 15:17 ` Timur Tabi [this message]
2015-12-15 15:17 ` Timur Tabi
2015-12-15 15:41 ` Arnd Bergmann
2015-12-15 21:09 ` Timur Tabi
2015-12-15 21:55 ` Arnd Bergmann
2015-12-15 22:49 ` Gilad Avidov
2015-12-31 23:03 ` Rob Herring
[not found] ` <1450138740-32562-1-git-send-email-gavidov-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-12-16 0:15 ` Timur Tabi
2015-12-16 0:15 ` Timur Tabi
2015-12-16 3:12 ` David Miller
2015-12-16 3:30 ` Timur Tabi
-- strict thread matches above, loose matches on Subject: below --
2015-12-07 22:58 Gilad Avidov
2015-12-07 23:33 ` Felix Fietkau
2015-12-07 23:47 ` Gilad Avidov
2015-12-07 23:37 ` kbuild test robot
2015-12-07 23:37 ` kbuild test robot
2015-12-09 20:09 ` Timur Tabi
2015-12-09 20:37 ` Fabio Estevam
2015-12-09 20:58 ` David Miller
2015-12-10 0:26 ` Gilad Avidov
2015-12-10 4:04 ` Timur Tabi
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