lkml.org 
[lkml]   [2014]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] ARM: imx6q: Add missing esai_ahb clock to current clock tree
On Thu, Jan 09, 2014 at 08:55 +0100, Sascha Hauer wrote:
>
> [ ... ]
>
> We have the situation here that a single bit controls two clocks. As
> Shawn mentioned just using two gates on the same bit doesn't work
> properly. Do we need a new basic clock type or expand the common gate
> code somehow?
> This situation happens from time to time and I haven't seen a solution
> for this.

You may want to lookup the following message:

Date: Tue, 23 Jul 2013 15:14:06 +0200
From: Gerhard Sittig <gsi@denx.de>
To: linuxppc-dev@lists.ozlabs.org, Anatolij Gustschin <agust@denx.de>,
Mike Turquette <mturquette@linaro.org>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org
Cc: [ ... ]
Subject: Re: [PATCH v3 17/31] clk: mpc512x: introduce COMMON_CLK for MPC512x

http://lists.infradead.org/pipermail/linux-arm-kernel/2013-July/185687.html

The specific situation was for MS-CAN on PowerPC, but it inspired
my outlining an approach to "shared clock gates". See an example
implementation towards the end of the message with both the
clk-gate.c extension, as well as rather generic example use.

My approach turned out to not be needed, but it might serve as a
starting point for you. You'd have to add support for static
declaration though, but this should be straight forward.


virtually yours
Gerhard Sittig
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr. 5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office@denx.de


\
 
 \ /
  Last update: 2014-01-09 17:01    [W:0.165 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site