From: Chris Packham <Chris.Packham@alliedtelesis.co.nz>
To: "christophe.leroy@c-s.fr" <christophe.leroy@c-s.fr>,
"paulus@samba.org" <paulus@samba.org>,
"mpe@ellerman.id.au" <mpe@ellerman.id.au>,
"benh@kernel.crashing.org" <benh@kernel.crashing.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"cai@lca.pw" <cai@lca.pw>
Cc: Hamish Martin <Hamish.Martin@alliedtelesis.co.nz>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: Argh, can't find dcache properties !
Date: Tue, 24 Mar 2020 20:06:56 +0000 [thread overview]
Message-ID: <876a5938fbad9d9e176e5f22f12e6b472d0dc4f7.camel@alliedtelesis.co.nz> (raw)
In-Reply-To: <87tv2exst1.fsf@mpe.ellerman.id.au>
On Tue, 2020-03-24 at 15:47 +1100, Michael Ellerman wrote:
> Chris Packham <Chris.Packham@alliedtelesis.co.nz> writes:
> > Hi All,
> >
> > Just booting up v5.5.11 on a Freescale T2080RDB and I'm seeing the
> > following mesage.
> >
> > kern.warning linuxbox kernel: Argh, can't find dcache properties !
> > kern.warning linuxbox kernel: Argh, can't find icache properties !
> >
> > This was changed from DBG() to pr_warn() in commit 3b9176e9a874
> > ("powerpc/setup_64: fix -Wempty-body warnings") but the message
> > seems
> > to be much older than that. So it's probably been an issue on the
> > T2080
> > (and other QorIQ SoCs) for a while.
>
> That's an e6500 I think? So 64-bit Book3E.
>
Yes that's correct.
> You'll be getting the default values, which is 64 bytes so I guess
> that
> works in practice.
>
> > Looking at the code the t208x doesn't specifiy any of the d-cache-
> > size/i-cache-size properties. Should I add them to silence the
> > warning
> > or switch it to pr_debug()/pr_info()?
>
> Yeah ideally you'd add them to the device tree(s) for those boards.
>
I think the info I need is in the block diagram[0]. I'll whip up
a patch.
--
[1] - https://www.nxp.com/products/processors-and-microcontrollers/power-architecture/qoriq-communication-processors/t-series/qoriq-t2080-and-t2081-multicore-communications-processors:T2080
next prev parent reply other threads:[~2020-03-24 20:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-23 2:25 Argh, can't find dcache properties ! Chris Packham
2020-03-24 4:47 ` Michael Ellerman
2020-03-24 20:06 ` Chris Packham [this message]
2020-03-24 20:13 ` Qian Cai
2020-03-25 6:01 ` Michael Ellerman
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