RE: [PATCH 0/2] mtd: atmel_nand: remove compatible "atmel,sama5d4-nfc"

[Yang, Wenyou]

> -----Original Message-----
> From: Rob Herring [mailto:robh@xxxxxxxxxx]
> Sent: 2016年5月10日 4:13
> To: Yang, Wenyou <Wenyou.Yang@xxxxxxxxx>
> Cc: Brian Norris <computersforpeace@xxxxxxxxx>; David Woodhouse
> <dwmw2@xxxxxxxxxxxxx>; Pawel Moll <pawel.moll@xxxxxxx>; Mark Brown
> <broonie@xxxxxxxxxx>; Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>; Kumar
> Gala <galak@xxxxxxxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx; linux-
> mtd@xxxxxxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; Ferre, Nicolas
> <Nicolas.FERRE@xxxxxxxxx>; Alexandre Belloni <alexandre.belloni@free-
> electrons.com>; Jean-Christophe Plagniol-Villard <plagnioj@xxxxxxxxxxxx>;
> Russell King <linux@xxxxxxxxxxxxxxxx>; Josh Wu <rainyfeeling@xxxxxxxxxxx>;
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH 0/2] mtd: atmel_nand: remove compatible "atmel,sama5d4-
> nfc"
> 
> On Mon, May 09, 2016 at 02:51:17PM +0800, Wenyou Yang wrote:
> > It is a datasheet bug, for current SoCs, the RB_EDGE3(i.e. bit 27) of
> > HSMC_SR register does not exist, the RB_EDGE0 (i.e. bit 24) is the
> > ready/busy line edge status bit. So the compatible "atmel,sama5d4-nfc"
> > is unneeded.
> 
> The compatible is needed if the SOC still exists. You can list both for the sama5d4
> if the block is the same.

The NFC IP of SAMA5D4 is same as SAMA5D2's, SAMA5D4 hase this issue.  This compatible can be removed. 


Best Regards,
Wenyou Yang