From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chin Liang See <clsee@altera.com>
Date: Mon, 7 Sep 2015 20:16:58 -0500
Subject: [U-Boot] [PATCH 2/4] spi: cadence_qspi: Fix fdt read of
	spi-max-frequency
In-Reply-To: <201509031619.56284.marex@denx.de>
References: <1441287722-2250-1-git-send-email-clsee@altera.com>
 <1441287722-2250-2-git-send-email-clsee@altera.com>
 <201509031619.56284.marex@denx.de>
Message-ID: <1441675018.1908.4.camel@clsee-VirtualBox>
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To: u-boot@lists.denx.de

Hi,

On Thu, 2015-09-03 at 16:19 +0200, marex at denx.de wrote:
> On Thursday, September 03, 2015 at 03:42:00 PM, Chin Liang See wrote:
> > Fix the fdt read for spi-max-frequency as it's contained
> > in the child node. Current state of code is always
> > returning default value.
> > 
> > Signed-off-by: Chin Liang See <clsee@altera.com>
> > Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
> > Cc: Dinh Nguyen <dinh.linux@gmail.com>
> > Cc: Marek Vasut <marex@denx.de>
> > Cc: Stefan Roese <sr@denx.de>
> > Cc: Vikas Manocha <vikas.manocha@st.com>
> > Cc: Jagannadh Teki <jteki@openedev.com>
> > Cc: Pavel Machek <pavel@denx.de>
> > ---
> >  drivers/spi/cadence_qspi.c |    8 ++++----
> >  1 files changed, 4 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
> > index 300934e..a00af87 100644
> > --- a/drivers/spi/cadence_qspi.c
> > +++ b/drivers/spi/cadence_qspi.c
> > @@ -291,10 +291,6 @@ static int cadence_spi_ofdata_to_platdata(struct
> > udevice *bus) plat->regbase = (void *)data[0];
> >  	plat->ahbbase = (void *)data[2];
> > 
> > -	/* Use 500KHz as a suitable default */
> > -	plat->max_hz = fdtdec_get_int(blob, node, "spi-max-frequency",
> > -				      500000);
> > -
> >  	/* All other paramters are embedded in the child node */
> >  	subnode = fdt_first_subnode(blob, node);
> >  	if (subnode < 0) {
> > @@ -302,6 +298,10 @@ static int cadence_spi_ofdata_to_platdata(struct
> > udevice *bus) return -ENODEV;
> >  	}
> > 
> > +	/* Use 500KHz as a suitable default */
> > +	plat->max_hz = fdtdec_get_int(blob, subnode, "spi-max-frequency",
> > +				      500000);
> 
> Use fdtdec_get_u32() or such, since the value is unsigned int (have you ever
> seen negative frequency ? ;-) ). Then check the fdtdec_get_u32() return value.
> 

I git grep and no unsigned version.
But I can add unsigned casting to avoid that.

Thanks
Chin Liang

> >  	/* Read other parameters from DT */
> >  	plat->page_size = fdtdec_get_int(blob, subnode, "page-size", 256);
> >  	plat->block_size = fdtdec_get_int(blob, subnode, "block-size", 16);
> 
> Best regards,
> Marek Vasut