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From: swarren@wwwdotorg.org (Stephen Warren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] clk: tegra: export clock names for debugging
Date: Fri, 27 Jun 2014 09:59:57 -0600	[thread overview]
Message-ID: <53AD94FD.2070400@wwwdotorg.org> (raw)
In-Reply-To: <20140627121954.GR3679@tbergstrom-lnx.Nvidia.com>

On 06/27/2014 06:19 AM, Peter De Schrijver wrote:
> On Thu, Jun 26, 2014 at 05:52:16PM +0200, Stephen Warren wrote:
>> On 06/26/2014 09:48 AM, Peter De Schrijver wrote:
>>> When writing a module for testing or debugging purposes, there is no way to
>>> get hold of clk handles. This patch solves this by exposing all valid clocks
>>> as clkdev's for the virtual device tegra-clk-debug.
>>
>> This is to support clk_get_sys()?
>>
> 
> Yes.
> 
>> I guess this seems fine, so feel free to apply it, but I slightly wonder
>> why not just include this change as part of the presumably local and
>> never-to-be-upstreamed test/dev module?
> 
> The idea is to allow local debug modules to get hold of the struct clk *. I
> don't think that's possible without using clk_get_sys()?

Well, for a debug hack you can always just add extra clock entries into
some DT node and so avoid clk_get_sys:-)

My point wasn't so much about not using clk_get_sys in a debug driver,
but more that if this patch is only required to support non-upstreamed
debug code, perhaps this patch should stay downstream along with that
non-upstreamed debug code. That said, I'm not really objecting to it,
just making a minor comment.

  reply	other threads:[~2014-06-27 15:59 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-26 15:48 [PATCH] clk: tegra: export clock names for debugging Peter De Schrijver
2014-06-26 15:52 ` Stephen Warren
2014-06-27 12:19   ` Peter De Schrijver
2014-06-27 15:59     ` Stephen Warren [this message]
2014-06-26 18:32 ` Sergei Shtylyov

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