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

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Date:   Fri, 1 Feb 2019 10:54:07 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Yogesh Narayan Gaur <yogeshnarayan.gaur@....com>
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

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.

Shawn

> +			clocks = <&clockgen 4 3>, <&clockgen 4 3>;
> +			clock-names = "fspi_en", "fspi";
> +			status = "disabled";
> +		};
>  	};
>  };
> -- 
> 2.17.1
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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