linux-kernel - Re: [PATCH (v4) 2/2] mtd: brcmnand: Add support for the BCM63268

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Message-ID: <56541BD3.4070202@simon.arlott.org.uk>
Date:	Tue, 24 Nov 2015 08:12:03 +0000
From:	Simon Arlott <simon@...e.lp0.eu>
To:	Florian Fainelli <f.fainelli@...il.com>,
	Rob Herring <robh@...nel.org>
Cc:	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Brian Norris <computersforpeace@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-mtd@...ts.infradead.org, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Jonas Gorski <jogo@...nwrt.org>
Subject: Re: [PATCH (v4) 2/2] mtd: brcmnand: Add support for the BCM63268

On 23/11/15 18:22, Florian Fainelli wrote:
> On 22/11/15 14:17, Simon Arlott wrote:
>> The BCM63268 has a NAND interrupt register with combined status and enable
>> registers. It also has a clock for the NAND controller that needs to be
>> enabled.
>> 
>> Set up the device by enabling the clock, disabling and acking all
>> interrupts, then handle the CTRL_READY interrupt.
>> 
>> Add a "device_remove" function to struct brcmnand_soc so that the clock
>> can be disabled when the device is removed.
>> 
>> Signed-off-by: Simon Arlott <simon@...e.lp0.eu>
>> ---
>> On 22/11/15 21:59, Rob Herring wrote:
>>>>>> + * "brcm,nand-bcm63268"
>>>>>> + - compatible: should contain "brcm,nand-bcm<soc>", "brcm,nand-bcm63268"
>>>>
>>>> vendor,<soc>-device is preferred.
>> 
>> The existing two bindings use brcm,nand-<soc>, but I've changed this one.
> 
> Could we stick with the existing binding naming convention of using:
> 
> brcm,nand-<soc> just so automated tools or other things can match this
> one too, and +1 for consistency?

I could submit another patch renaming the existing bindings to
brcm,<soc>-nand, and add that to the drivers? Then they'd be consistent.

> Other than, that, same comment as Jonas, why do we we need the
> device_remove callback to be called from the main driver down to this one?

I'll add a "struct brcmnand_soc *brcmnand_get_socdata(struct device *)"
instead so that I can access the soc data before calling brcmnand_remove.

-- 
Simon Arlott
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