linux-kernel - Re: [RFC v1 5/5] ARM: mvebu: add board init for Armada 1500

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Date:	Sat, 17 Aug 2013 21:13:41 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Jason Cooper <jason@...edaemon.net>
Cc:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Andrew Lunn <andrew@...n.ch>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC v1 5/5] ARM: mvebu: add board init for Armada 1500

On Saturday 17 August 2013, Arnd Bergmann wrote:
> On Friday 16 August 2013, Jason Cooper wrote:
> > > +

> 
> You should really try to find out what driver uses this. If you have a requirement
> that VIRT == PHYS here, the most likely explanation is that some driver accidentally
> uses readl/writel on the physical address rather than on the result of ioremap.
> 
> You can try shrinking the area using bisection until you have found the offending
> driver based on the address.
> 

> > > +static void __init armada_1500_timer_and_clk_init(void)
> 
> New platforms should call this as 'l2x0_of_init(0, 0);' and get the bits from DT.
> 
> Note that we should really change the common code to do both the of_clk_init()
> and the l2x0_of_init() automatically, but that needs to be done with some care,
> in order to not break any of the existing platforms. Would you be able to do
> one of the two? We can then get the next person that wants to add a platform
> to do the last one ;-)


I replied to the wrong mail. My comments were obviously meant for Sebastian,
not for Jason.

	Arnd
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