linux-kernel - RE: [PATCH v2] mtd: spi-nor: fsl-quadspi: add big-endian support

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Date:	Fri, 18 Dec 2015 09:12:13 +0000
From:	Yao Yuan <yao.yuan@...escale.com>
To:	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"computersforpeace@...il.com" <computersforpeace@...il.com>
CC:	Xu Han <han.xu@...escale.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>
Subject: RE: [PATCH v2] mtd: spi-nor: fsl-quadspi: add big-endian support

Hi Woodhouse, Norris,

Do you have any comments for this patch?

Thanks for your review.

Best Regards,
Yuan Yao

> -----Original Message-----
> From: Han Xu [mailto:han.xu@...escale.com]
> Sent: Thursday, November 26, 2015 3:09 AM
> To: Yuan Yao-B46683 <yao.yuan@...escale.com>
> Cc: dwmw2@...radead.org; computersforpeace@...il.com; linux-
> kernel@...r.kernel.org; linux-mtd@...ts.infradead.org
> Subject: Re: [PATCH v2] mtd: spi-nor: fsl-quadspi: add big-endian support
On Thu, Nov 26, 2015 at 
> On Wed, Nov 18, 2015 at 05:13:28PM +0800, Yuan Yao wrote:
> > Add R/W functions for big- or little-endian registers:
> > The qSPI controller's endian is independent of the CPU core's endian.
> > So far, the qSPI have two versions for big-endian and little-endian.
> >
> > Signed-off-by: Yuan Yao <yao.yuan@...escale.com>
> > ---
> > Changed in v2:
> > Rebase to the lastest code.
> > ---
> >  drivers/mtd/spi-nor/fsl-quadspi.c | 157
> > +++++++++++++++++++++++---------------
> >  1 file changed, 97 insertions(+), 60 deletions(-)
> >
> > diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c
> > b/drivers/mtd/spi-nor/fsl-quadspi.c
> > index 9e7f657..0ce7768 100644

...

> > @@ -954,6 +990,7 @@ static int fsl_qspi_probe(struct platform_device
> *pdev)
> >  	if (IS_ERR(q->iobase))
> >  		return PTR_ERR(q->iobase);
> >
> > +	q->big_endian = of_property_read_bool(np, "big-endian");
> 
> I am fine with this patch, but need document the new property with another
> patch
> 
> >  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> >  					"QuadSPI-memory");
> >  	if (!devm_request_mem_region(dev, res->start, resource_size(res),
> @@

...

> >
> 
> Acked-by: Han xu <han.xu@...escale.com>
> --

Best Regards,
Yuan Yao
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