linux-kernel - RE: [PATCH v5 3/5] arm64: dts: lx2160a: add FlexSPI node property

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Date:   Wed, 12 Dec 2018 08:15:40 +0000
From:   Pankaj Bansal <pankaj.bansal@....com>
To:     Yogesh Narayan Gaur <yogeshnarayan.gaur@....com>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "boris.brezillon@...tlin.com" <boris.brezillon@...tlin.com>,
        "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>
CC:     "robh@...nel.org" <robh@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "computersforpeace@...il.com" <computersforpeace@...il.com>,
        "frieder.schrempf@...tron.de" <frieder.schrempf@...tron.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Yogesh Narayan Gaur <yogeshnarayan.gaur@....com>
Subject: RE: [PATCH v5 3/5] arm64: dts: lx2160a: add FlexSPI node property



> -----Original Message-----
> From: devicetree-owner@...r.kernel.org [mailto:devicetree-
> owner@...r.kernel.org] On Behalf Of Yogesh Narayan Gaur
> Sent: Friday, November 16, 2018 4:44 PM
> To: linux-mtd@...ts.infradead.org; boris.brezillon@...tlin.com;
> marek.vasut@...il.com; broonie@...nel.org; linux-spi@...r.kernel.org;
> devicetree@...r.kernel.org
> Cc: robh@...nel.org; mark.rutland@....com; shawnguo@...nel.org; linux-
> arm-kernel@...ts.infradead.org; computersforpeace@...il.com;
> frieder.schrempf@...tron.de; linux-kernel@...r.kernel.org; Yogesh Narayan
> Gaur <yogeshnarayan.gaur@....com>
> Subject: [PATCH v5 3/5] arm64: dts: lx2160a: add FlexSPI node property
> 
> 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 Gaur <yogeshnarayan.gaur@....com>
> ---
> Changes for v5:
> - None
> Changes for v4:
> - Incorporated Rob review comments.
> Changes for v3:
> - None.
> Changes for v2:
> - - Incorporated Shawn review comments.
> ---
>  arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts | 22
> ++++++++++++++++++++++
>  arch/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 1483071..3b20c97 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> @@ -35,6 +35,28 @@
>  	status = "okay";
>  };
> 
> +&fspi {
> +	status = "okay";
> +
> +	mt35xu512aba0: flash@0 {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		compatible = "spansion,m25p80";
> +		m25p,fast-read;
> +		spi-max-frequency = <20000000>;

The SPI flash supports 50MHz frequency. Please update to 50Mhz

> +		reg = <0>;
> +	};
> +
> +	mt35xu512aba1: flash@1 {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		compatible = "spansion,m25p80";
> +		m25p,fast-read;
> +		spi-max-frequency = <20000000>;
> +		reg = <1>;
> +	};
> +};
> +
>  &i2c0 {
>  	status = "okay";
>  	i2c-mux@77 {
> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> index c758268..5d0025a 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> @@ -698,5 +698,18 @@
>  			interrupts = <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;
>  			timeout-sec = <30>;
>  		};
> +
> +		fspi: spi@...0000 {
> +			compatible = "nxp,lx2160a-fspi";
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <0x0 0x20c0000 0x0 0x10000>,
> +				<0x0 0x20000000 0x0 0x10000000>;
> +			reg-names = "fspi_base", "fspi_mmap";
> +			interrupts = <0 25 0x4>; /* Level high type */
> +			clocks = <&clockgen 4 3>, <&clockgen 4 3>;
> +			clock-names = "fspi_en", "fspi";
> +			status = "disabled";
> +		};
>  	};
>  };
> --
> 2.7.4