From: Saravana Kannan <skannan@codeaurora.org>
To: Jeremy Kerr <jeremy.kerr@canonical.com>
Cc: linux-arm-kernel@lists.infradead.org,
"Nicolas Pitre" <nicolas.pitre@linaro.org>,
"Lorenzo Pieralisi" <Lorenzo.Pieralisi@arm.com>,
"Vincent Guittot" <vincent.guittot@linaro.org>,
linux-sh@vger.kernel.org,
"Ben Herrenschmidt" <benh@kernel.crashing.org>,
"Sascha Hauer" <s.hauer@pengutronix.de>,
"Paul Mundt" <lethal@linux-sh.org>,
linux-kernel@vger.kernel.org,
"Ryan Mallon" <ryan@bluewatersys.com>,
"Dima Zavin" <dmitriyz@google.com>,
"Ben Dooks" <ben-linux@fluff.org>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Russell King" <linux@arm.linux.org.uk>
Subject: Re: [RFC,PATCH 2/3] clk: Generic support for fixed-rate clocks
Date: Mon, 14 Feb 2011 20:51:11 -0800 [thread overview]
Message-ID: <4D5A063F.1010102@codeaurora.org> (raw)
In-Reply-To: <201102150941.00668.jeremy.kerr@canonical.com>
On 02/14/2011 05:41 PM, Jeremy Kerr wrote:
> Hi Ryan,
>
>> A fixed clock may still have other operations such as enable/disable.
>
> Then it's not a fixed clock; I'd prefer this to be a separate type, as it's
> now hardware dependent.
>
I'm confused. If a clock's rate can't be changed and it can't be enabled
or disabled, then what's the point of representing that clock
signal/line as a clock in the driver. Seems like a "nothing to see here,
move along" type of clock. To express it differently, I find this
similar to "if (1) { ... }". Obviously I'm missing something here. What
is it?
-Saravana
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
next prev parent reply other threads:[~2011-02-15 4:51 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-01 9:11 Locking in the clk API, part 2: clk_prepare/clk_unprepare Jeremy Kerr
2011-02-01 10:54 ` Uwe Kleine-König
2011-02-01 13:05 ` Jassi Brar
2011-02-01 14:00 ` Uwe Kleine-König
2011-02-01 15:14 ` Russell King - ARM Linux
2011-02-01 15:22 ` Uwe Kleine-König
2011-02-01 15:28 ` Russell King - ARM Linux
2011-02-01 20:57 ` Saravana Kannan
2011-02-02 2:31 ` Jassi Brar
2011-02-01 13:15 ` Russell King - ARM Linux
2011-02-01 14:18 ` Uwe Kleine-König
2011-02-01 14:39 ` Russell King - ARM Linux
2011-02-01 15:18 ` Uwe Kleine-König
2011-02-01 15:24 ` Russell King - ARM Linux
2011-02-01 15:53 ` Uwe Kleine-König
2011-02-01 17:06 ` Russell King - ARM Linux
2011-02-01 19:32 ` Uwe Kleine-König
2011-02-01 19:56 ` Russell King - ARM Linux
2011-02-01 20:21 ` Saravana Kannan
2011-02-01 20:43 ` Uwe Kleine-König
2011-02-04 9:33 ` Richard Zhao
2011-02-01 20:06 ` Nicolas Pitre
2011-02-01 20:33 ` Saravana Kannan
2011-02-01 20:36 ` Russell King - ARM Linux
2011-02-01 20:59 ` Stephen Boyd
2011-02-01 21:24 ` Russell King - ARM Linux
2011-02-04 9:54 ` Richard Zhao
2011-02-04 10:21 ` Uwe Kleine-König
2011-02-04 10:57 ` Russell King - ARM Linux
2011-02-04 10:48 ` Russell King - ARM Linux
2011-02-04 11:04 ` Jassi Brar
2011-02-04 11:18 ` Russell King - ARM Linux
2011-02-04 11:51 ` Jassi Brar
2011-02-04 12:05 ` Russell King - ARM Linux
2011-02-01 14:40 ` Jeremy Kerr
2011-02-04 12:45 ` Richard Zhao
2011-02-04 13:20 ` Russell King - ARM Linux
2011-02-07 6:07 ` [RFC,PATCH 1/3] Add a common struct clk Jeremy Kerr
2011-02-07 7:05 ` Uwe Kleine-König
2011-02-07 8:08 ` Uwe Kleine-König
[not found] ` <AANLkTim1S9zpebn3yj1fBZTtOkqj2FLwhYWBZ2HXJajR@mail.gmail.com>
2011-02-07 8:22 ` Jeremy Kerr
2011-02-07 19:59 ` Colin Cross
2011-02-08 1:40 ` Jeremy Kerr
2011-02-07 20:20 ` Ryan Mallon
2011-02-08 2:54 ` Jeremy Kerr
2011-02-08 3:30 ` Ryan Mallon
2011-02-08 7:28 ` Jeremy Kerr
2011-02-07 6:07 ` [RFC, PATCH 3/3] clk: add warnings for incorrect enable/prepare semantics Jeremy Kerr
2011-02-07 6:29 ` Jassi Brar
2011-02-07 7:00 ` Jeremy Kerr
2011-02-07 8:05 ` Uwe Kleine-König
2011-02-07 8:08 ` Jeremy Kerr
2011-02-07 14:24 ` Nicolas Pitre
2011-02-10 4:26 ` Saravana Kannan
2011-02-07 6:07 ` [RFC,PATCH 2/3] clk: Generic support for fixed-rate clocks Jeremy Kerr
2011-02-07 6:07 ` [RFC,PATCH 0/3] Common struct clk implementation, v11 Jeremy Kerr
2011-02-09 6:41 ` [RFC,PATCH 0/3] Common struct clk implementation, v12 Jeremy Kerr
2011-02-09 6:41 ` [RFC, PATCH 3/3] clk: add warnings for incorrect enable/prepare semantics Jeremy Kerr
2011-02-10 9:37 ` Richard Zhao
2011-02-15 2:00 ` Jeremy Kerr
2011-02-09 6:41 ` [RFC,PATCH 2/3] clk: Generic support for fixed-rate clocks Jeremy Kerr
2011-02-09 6:58 ` Fabio Giovagnini
2011-02-10 23:23 ` Ryan Mallon
2011-02-15 1:41 ` Jeremy Kerr
2011-02-15 4:51 ` Saravana Kannan [this message]
2011-02-15 6:18 ` Jeremy Kerr
2011-02-15 6:31 ` Saravana Kannan
2011-02-09 6:41 ` [RFC,PATCH 1/3] Add a common struct clk Jeremy Kerr
2011-02-09 9:00 ` Uwe Kleine-König
2011-02-09 20:21 ` Ryan Mallon
2011-02-09 20:39 ` Uwe Kleine-König
2011-02-09 20:42 ` Ryan Mallon
2011-02-10 10:03 ` Richard Zhao
2011-02-10 10:10 ` Ryan Mallon
2011-02-10 12:45 ` Richard Zhao
2011-02-10 10:46 ` Uwe Kleine-König
2011-02-10 13:08 ` Richard Zhao
2011-02-10 13:13 ` Russell King - ARM Linux
2011-02-15 1:36 ` Jeremy Kerr
2011-02-15 1:43 ` Ryan Mallon
2011-02-10 5:16 ` Saravana Kannan
2011-02-15 2:41 ` Jeremy Kerr
2011-02-15 5:33 ` Saravana Kannan
2011-02-15 7:26 ` Jeremy Kerr
2011-02-15 8:33 ` Saravana Kannan
2011-02-15 8:37 ` Russell King - ARM Linux
2011-02-15 9:33 ` Jeremy Kerr
2011-02-15 14:13 ` Richard Zhao
2011-02-20 13:07 ` Russell King - ARM Linux
2011-02-16 4:53 ` Saravana Kannan
2011-02-20 13:13 ` Russell King - ARM Linux
2011-02-21 2:50 ` [PATCH 0/2] Common struct clk implementation, v13 Jeremy Kerr
2011-02-21 2:50 ` [PATCH 2/2] clk: Generic support for fixed-rate clocks Jeremy Kerr
2011-02-21 19:51 ` Ryan Mallon
2011-02-21 23:29 ` Jeremy Kerr
2011-02-21 2:50 ` [PATCH 1/2] Add a common struct clk Jeremy Kerr
2011-02-22 20:17 ` Uwe Kleine-König
2011-02-23 2:49 ` Jeremy Kerr
2011-02-22 23:33 ` [PATCH] wip: convert imx27 to " Uwe Kleine-König
2011-02-23 4:17 ` Saravana Kannan
2011-02-23 8:15 ` Uwe Kleine-König
2011-03-03 6:40 ` [PATCH 0/2] Common struct clk implementation, v14 Jeremy Kerr
2011-03-03 6:40 ` [PATCH 2/2] clk: Generic support for fixed-rate clocks Jeremy Kerr
2011-03-03 6:40 ` [PATCH 1/2] Add a common struct clk Jeremy Kerr
2011-04-14 12:49 ` Tony Lindgren
2011-03-14 10:16 ` [PATCH 0/2] Common struct clk implementation, v14 Uwe Kleine-König
2011-03-15 4:31 ` Jeremy Kerr
2011-03-21 2:33 ` Jeremy Kerr
2011-04-14 4:20 ` Jeremy Kerr
2011-04-14 10:00 ` Russell King - ARM Linux
2011-04-14 10:23 ` Jeremy Kerr
2011-04-14 10:26 ` Russell King - ARM Linux
2011-04-14 10:25 ` Benjamin Herrenschmidt
2011-04-14 10:32 ` Russell King - ARM Linux
2011-04-14 11:59 ` Nicolas Pitre
2011-04-14 12:09 ` Russell King - ARM Linux
2011-04-14 13:39 ` Nicolas Pitre
2011-04-14 14:00 ` Mark Brown
2011-04-14 15:38 ` Russell King - ARM Linux
2011-04-14 16:06 ` Nicolas Pitre
2011-04-14 17:20 ` Uwe Kleine-König
2011-04-18 10:54 ` Paul Mundt
2011-04-20 14:28 ` Uwe Kleine-König
2011-04-20 16:41 ` Thomas Gleixner
2011-04-14 19:29 ` Saravana Kannan
2011-04-14 16:08 ` Uwe Kleine-König
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