From: linus.walleij@linaro.org (Linus Walleij)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 04/12] clocksource: Sched clock source for Versatile Express
Date: Fri, 2 May 2014 15:14:34 -0700 [thread overview]
Message-ID: <CACRpkdZ2Chwm0xu+bf8UAEi_5DR8WhMTv0gDJ6NC+6bQwHeB6Q@mail.gmail.com> (raw)
In-Reply-To: <1392138636-29240-5-git-send-email-pawel.moll@arm.com>
On Tue, Feb 11, 2014 at 9:10 AM, Pawel Moll <pawel.moll@arm.com> wrote:
> This patch adds a trival sched clock source using free
> running, 24MHz clocked counter present in the ARM Ltd.
> Versatile Express platform's System Registers block.
>
> This code replaces the call in the VE machine code.
>
> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Even the Integrator is very similar, albeit using register 0x28 instead
of register 0x5c. cd commit
a79528e9d849803457b6235ddb1a1cfd4e11c6cd
It's one of these things where writing a device driver results in
more code than just registering this counter with the sched_clock
guts :-/
Getting the clock from the DT gives this nice feeling of having it all
complete, and sched_clock cannot really change frequency anyway
so I'm happy with this thing.
I'll augment it for Integrator when/if I find time.
Yours,
Linus Walleij
next prev parent reply other threads:[~2014-05-02 22:14 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-11 17:10 [PATCH 00/12] Versatile Express updates Pawel Moll
2014-02-11 17:10 ` [PATCH 01/12] misc: vexpress-syscfg: Add udelay-based delay Pawel Moll
2014-02-15 19:19 ` Greg Kroah-Hartman
2014-02-11 17:10 ` [PATCH 02/12] power/reset: vexpress: Use udelay instead of timers Pawel Moll
2014-02-11 20:59 ` Arnd Bergmann
2014-02-12 11:56 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 03/12] clk: versatile: Split config options for sp810 and vexpress_osc Pawel Moll
2014-02-11 17:10 ` [PATCH 04/12] clocksource: Sched clock source for Versatile Express Pawel Moll
2014-04-16 13:56 ` Rob Herring
2014-04-16 14:22 ` Pawel Moll
2014-04-16 14:45 ` Rob Herring
2014-04-16 15:05 ` Pawel Moll
2014-05-02 22:14 ` Linus Walleij [this message]
2014-05-07 9:57 ` Pawel Moll
2014-05-13 8:47 ` Linus Walleij
2014-02-11 17:10 ` [PATCH 05/12] GPIO: gpio-generic: Add label to platform data Pawel Moll
2014-02-11 17:17 ` Lee Jones
2014-02-11 17:20 ` Pawel Moll
2014-02-11 17:29 ` Pawel Moll
2014-02-11 17:46 ` Lee Jones
2014-02-11 17:10 ` [PATCH 06/12] mfd: vexpress-sysreg: Add labels to gpio banks Pawel Moll
2014-02-11 17:19 ` Lee Jones
2014-02-13 13:08 ` Linus Walleij
2014-02-13 13:11 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 07/12] mfd: syscon: Consider platform data a regmap config name Pawel Moll
2014-02-11 17:24 ` Lee Jones
2014-02-12 7:09 ` Alexander Shiyan
2014-02-12 8:26 ` Lee Jones
2014-02-12 11:06 ` Pawel Moll
2014-02-12 11:18 ` Lee Jones
2014-02-12 11:27 ` Alexander Shiyan
2014-02-12 11:43 ` Pawel Moll
2014-02-11 17:10 ` [PATCH 08/12] mfd: vexpress-sysreg: Add syscon labels as platform data Pawel Moll
2014-02-11 17:29 ` Lee Jones
2014-02-11 17:32 ` Pawel Moll
2014-02-11 17:48 ` Lee Jones
2014-02-11 17:52 ` [PATCH v2 1/2] mfd: syscon: Add platform data with a regmap config name Pawel Moll
2014-02-11 17:52 ` [PATCH v2 2/2] mfd: vexpress-sysreg: Add syscon labels as platform data Pawel Moll
2014-02-12 11:20 ` Lee Jones
2014-02-11 17:55 ` [PATCH v2 1/2] mfd: syscon: Add platform data with a regmap config name Pawel Moll
2014-02-12 11:19 ` Lee Jones
2014-02-11 17:10 ` [PATCH 09/12] hwmon: vexpress: Use devm helper for hwmon device registration Pawel Moll
2014-02-11 20:57 ` Arnd Bergmann
2014-02-11 17:10 ` [PATCH 10/12] ARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count Pawel Moll
2014-02-11 17:10 ` [PATCH 11/12] ARM: vexpress: Simplify SMP operations for DT-powered system Pawel Moll
2014-02-11 17:10 ` [PATCH 12/12] ARM: vexpress: move HBI check to sysreg driver Pawel Moll
2014-02-11 19:28 ` [PATCH 00/12] Versatile Express updates Arnd Bergmann
2014-02-12 12:30 ` Pawel Moll
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=CACRpkdZ2Chwm0xu+bf8UAEi_5DR8WhMTv0gDJ6NC+6bQwHeB6Q@mail.gmail.com \
--to=linus.walleij@linaro.org \
--cc=linux-arm-kernel@lists.infradead.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;
as well as URLs for NNTP newsgroup(s).