linux-kernel - Re: [BISECTED] OMAP: DSS: clk rate mismatch

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Message-ID: <52E772A3.4090401@ti.com>
Date:	Tue, 28 Jan 2014 11:04:35 +0200
From:	Tomi Valkeinen <tomi.valkeinen@...com>
To:	Christoph Fritz <chf.fritz@...glemail.com>
CC:	Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <pali.rohar@...il.com>,
	<pavel@....cz>, Tero Kristo <t-kristo@...com>,
	Nishanth Menon <nm@...com>
Subject: Re: [BISECTED] OMAP: DSS: clk rate mismatch

On 2014-01-27 20:41, Christoph Fritz wrote:
> On Mon, 2014-01-27 at 19:30 +0200, Ivaylo Dimitrov wrote:
>> linux-next-20140124 DSS is broken on N900  - display stays black (there 
>> is some noise though). I booted the kernel with qemu and it gives the 
>> following warning:
>>
>> [    0.623779] DSS: set fck to 172800000
>> [    0.624237] ------------[ cut here ]------------
>> [    0.624298] WARNING: CPU: 0 PID: 1 at 
>> drivers/video/omap2/dss/dss.c:497 dss_set_fck_rate+0x68/0x8c()
>> [    0.624359] clk rate mismatch: 288000000 != 172800000
> 
> Here are also clock regressions since next-20140122 regarding
> dss_set_fck_rate() and sys_clkout2 occuring in my current patchset for a
> dm37xx100 board. Please see here:

I presume you get a similar warning on your board? What rates does it
report?

 Tomi



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