linux-kernel - RE: [PATCH v8 3/5] arm64: dts: lx2160a: add FlexSPI node property

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Date:   Fri, 1 Feb 2019 05:05:49 +0000
From:   Yogesh Narayan Gaur <yogeshnarayan.gaur@....com>
To:     Shawn Guo <shawnguo@...nel.org>
CC:     "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "bbrezillon@...nel.org" <bbrezillon@...nel.org>,
        "marek.vasut@...il.com" <marek.vasut@...il.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "robh@...nel.org" <robh@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "frieder.schrempf@...tron.de" <frieder.schrempf@...tron.de>,
        "computersforpeace@...il.com" <computersforpeace@...il.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH v8 3/5] arm64: dts: lx2160a: add FlexSPI node property



> -----Original Message-----
> From: Shawn Guo [mailto:shawnguo@...nel.org]
> Sent: Friday, February 1, 2019 8:24 AM
> To: Yogesh Narayan Gaur <yogeshnarayan.gaur@....com>
> Cc: linux-mtd@...ts.infradead.org; bbrezillon@...nel.org;
> marek.vasut@...il.com; broonie@...nel.org; linux-spi@...r.kernel.org;
> devicetree@...r.kernel.org; mark.rutland@....com; robh@...nel.org; linux-
> kernel@...r.kernel.org; frieder.schrempf@...tron.de;
> computersforpeace@...il.com; linux-arm-kernel@...ts.infradead.org
> Subject: Re: [PATCH v8 3/5] arm64: dts: lx2160a: add FlexSPI node property
> 
> On Tue, Jan 15, 2019 at 12:00:26PM +0000, Yogesh Narayan Gaur wrote:
> > Add fspi node property for LX2160A SoC for FlexSPI driver.
> > Property added for the FlexSPI controller and for the connected slave
> > device for the LX2160ARDB target.
> > This is having two SPI-NOR flash device, mt35xu512aba, connected at
> > CS0 and CS1.
> >
> > Signed-off-by: Yogesh Narayan Gaur <yogeshnarayan.gaur@....com>
> > ---
> > Changes for v8:
> > - None
> > Changes for v7:
> > - None
> > Changes for v6:
> > - None
> > Changes for v5:
> > - None
> > Changes for v4:
> > - Incorporated Rob review comments.
> > Changes for v3:
> > - None.
> > Changes for v2:
> > - Incorporated Shawn review comments.
> >
> >  .../boot/dts/freescale/fsl-lx2160a-rdb.dts    | 22 +++++++++++++++++++
> >  .../arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 13 +++++++++++
> >  2 files changed, 35 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> > b/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> > index 6481e5f20e69..70658946fbbe 100644
> > --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> > +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> > @@ -50,6 +50,28 @@
> >  	status = "okay";
> >  };
> >
> > +&fspi {
> > +	status = "okay";
> > +
> > +	mt35xu512aba0: flash@0 {
> > +		#address-cells = <1>;
> > +		#size-cells = <1>;
> > +		compatible = "spansion,m25p80";
> > +		m25p,fast-read;
> > +		spi-max-frequency = <50000000>;
> > +		reg = <0>;
> > +	};
> > +
> > +	mt35xu512aba1: flash@1 {
> > +		#address-cells = <1>;
> > +		#size-cells = <1>;
> > +		compatible = "spansion,m25p80";
> > +		m25p,fast-read;
> > +		spi-max-frequency = <50000000>;
> > +		reg = <1>;
> > +	};
> > +};
> > +
> >  &i2c0 {
> >  	status = "okay";
> >
> > diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> > b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> > index a79f5c1ea56d..e3ff86201f73 100644
> > --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> > @@ -762,5 +762,18 @@
> >  				     <GIC_SPI 209 IRQ_TYPE_LEVEL_HIGH>;
> >  			dma-coherent;
> >  		};
> > +
> > +		fspi: spi@...0000 {
> 
> To keep the nodes sorted in unit-address, it should go after i2c@...0000.
> 
> > +			compatible = "nxp,lx2160a-fspi";
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +			reg = <0x0 0x20c0000 0x0 0x10000>,
> > +				<0x0 0x20000000 0x0 0x10000000>;
> 
> I would align the indentation with the above.
> 
> > +			reg-names = "fspi_base", "fspi_mmap";
> > +			interrupts = <0 25 0x4>; /* Level high type */
> 
> interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>; so that we can save the
> comment there.
> 
> I fixed up all these small things and applied the patch.
> 
Ok, Thanks.

--
Regards
Yogesh Gaur.

> Shawn
> 
> > +			clocks = <&clockgen 4 3>, <&clockgen 4 3>;
> > +			clock-names = "fspi_en", "fspi";
> > +			status = "disabled";
> > +		};
> >  	};
> >  };
> > --
> > 2.17.1
> >
> >
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