linux-kernel - Re: [PATCH 1/3] mtd: brcmnand: Add brcm,bcm6368-nand device tree binding

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Message-ID: <20151209200237.GB144338@google.com>
Date:	Wed, 9 Dec 2015 12:02:37 -0800
From:	Brian Norris <computersforpeace@...il.com>
To:	Simon Arlott <simon@...e.lp0.eu>
Cc:	Jonas Gorski <jogo@...nwrt.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	MTD Maling List <linux-mtd@...ts.infradead.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Kamal Dasu <kdasu.kdev@...il.com>
Subject: Re: [PATCH 1/3] mtd: brcmnand: Add brcm,bcm6368-nand device tree
 binding

On Fri, Dec 04, 2015 at 09:29:55PM -0000, Simon Arlott wrote:
> On Fri, December 4, 2015 16:04, Jonas Gorski wrote:
> > On Thu, Dec 3, 2015 at 12:41 AM, Simon Arlott <simon@...e.lp0.eu> wrote:
> >> +   * "brcm,nand-bcm6368"
> >> +     - compatible: should contain "brcm,nand-bcm<soc>", "brcm,nand-bcm6368"
> >> +     - reg: (required) the 'NAND_INTR_BASE' register range, with combined status
> >> +       and enable registers, and boot address registers
> >> +     - reg-names: (required) "nand-intr-base"
> >
> > Can't we use the same name as bcm63138, i.e. nand-int-base?
> 
> Brian,
> 
> Before I change this, is there anything else in the patch series that needs to
> be changed?

No, I think you covered my comments in your latest series:

http://lists.infradead.org/pipermail/linux-mtd/2015-December/064004.html

I don't know about Jonas's comments about using bcm6368, even though
bcm6368 is a much older NAND core. I had similar thoughts when Florian
first proposed it, but I'm not sure I have a much better suggestion.
We're trying to describe two slightly different tracks of IP: the core
NAND controller, which has a defined revision (2.x, 4.0, etc.), and the
accessory interrupt bits, which are mostly constant across a product
line / class of SoCs and aren't really versioned.

So I guess I'm OK with the usage of the bcm6368 compatible string.

Regards,
Brian
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