linux-kernel - RE: [PATCH] spi: uniphier: fix incorrect property items

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Date:   Fri, 26 Oct 2018 09:12:09 +0900
From:   "Keiji Hayashibara" <hayashibara.keiji@...ionext.com>
To:     "'Rob Herring'" <robh@...nel.org>
Cc:     <broonie@...nel.org>, <mark.rutland@....com>,
        Yamada, Masahiro/山田 真弘 
        <yamada.masahiro@...ionext.com>, <linux-spi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <stable@...r.kernel.org>,
        <masami.hiramatsu@...aro.org>, <jaswinder.singh@...aro.org>,
        <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] spi: uniphier: fix incorrect property items

Hello Rob,

> -----Original Message-----
> From: Rob Herring [mailto:robh@...nel.org]
> Sent: Friday, October 26, 2018 4:59 AM
> To: Hayashibara, Keiji/林原 啓二 <hayashibara.keiji@...ionext.com>
> Cc: broonie@...nel.org; mark.rutland@....com; Yamada, Masahiro/山田 真弘 <yamada.masahiro@...ionext.com>;
> linux-spi@...r.kernel.org; linux-arm-kernel@...ts.infradead.org; devicetree@...r.kernel.org;
> stable@...r.kernel.org; masami.hiramatsu@...aro.org; jaswinder.singh@...aro.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH] spi: uniphier: fix incorrect property items
> 
> On Wed, Oct 24, 2018 at 06:34:29PM +0900, Keiji Hayashibara wrote:
> > This commit fixes incorrect property because it was different from the
> > actual.
> > The parameters of '#address-cells' and '#size-cells' were removed, and
> > 'interrupts', 'pinctrl-names' and 'pinctrl-0' were added.
> >
> > Fixes: 4dcd5c2781f3 ("spi: add DT bindings for UniPhier SPI
> > controller")
> > Signed-off-by: Keiji Hayashibara <hayashibara.keiji@...ionext.com>
> > ---
> >  Documentation/devicetree/bindings/spi/spi-uniphier.txt | 14
> > ++++++++------
> >  1 file changed, 8 insertions(+), 6 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/spi/spi-uniphier.txt
> > b/Documentation/devicetree/bindings/spi/spi-uniphier.txt
> > index 504a4ec..b04e66a 100644
> > --- a/Documentation/devicetree/bindings/spi/spi-uniphier.txt
> > +++ b/Documentation/devicetree/bindings/spi/spi-uniphier.txt
> > @@ -5,18 +5,20 @@ UniPhier SoCs have SCSSI which supports SPI single channel.
> >  Required properties:
> >   - compatible: should be "socionext,uniphier-scssi"
> >   - reg: address and length of the spi master registers
> > - - #address-cells: must be <1>, see spi-bus.txt
> > - - #size-cells: must be <0>, see spi-bus.txt
> 
> How is removing these correct? They are needed if you have any child devices.

They are necessary when the child device is connected.
I removed it because it was specified in spi-bus.txt,
but I will leave them in next patch.

> 
> > - - clocks: A phandle to the clock for the device.
> > - - resets: A phandle to the reset control for the device.
> > + - interrupts: a single interrupt specifier
> > + - pinctrl-names: should be "default"
> > + - pinctrl-0: pin control state for the default mode
> > + - clocks: a phandle to the clock for the device
> > + - resets: a phandle to the reset control for the device
> >
> >  Example:
> >
> >  spi0: spi@...06000 {
> >  	compatible = "socionext,uniphier-scssi";
> >  	reg = <0x54006000 0x100>;
> > -	#address-cells = <1>;
> > -	#size-cells = <0>;
> > +	interrupts = <0 39 4>;
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&pinctrl_spi0>;
> >  	clocks = <&peri_clk 11>;
> >  	resets = <&peri_rst 11>;
> >  };
> > --
> > 2.7.4
> >

Thank you.

---
Best Regards,
Keiji Hayashibara