linux-kernel - Re: [PATCH 2/2] arm64: imx8mp: imx8mp-phycore-som enable spi nor

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Message-ID: <196131b90400b434931992ba5a9078828d1eaf2a.camel@phytec.de>
Date:   Mon, 8 Mar 2021 08:52:09 +0000
From:   Teresa Remmet <T.Remmet@...tec.de>
To:     "hs@...x.de" <hs@...x.de>,
        "m.felsch@...gutronix.de" <m.felsch@...gutronix.de>
CC:     "krzk@...nel.org" <krzk@...nel.org>,
        "linux-imx@....com" <linux-imx@....com>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "festevam@...il.com" <festevam@...il.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>
Subject: Re: [PATCH 2/2] arm64: imx8mp: imx8mp-phycore-som enable spi nor

Hello Marco,

Am Montag, den 08.03.2021, 09:40 +0100 schrieb Marco Felsch:
> On 21-03-08 07:40, Heiko Schocher wrote:
> > enable the mt25qu256aba spi nor on the imx8mp-phycore-som.
> > 
> > Signed-off-by: Heiko Schocher <hs@...x.de>
> > ---
> > 
> >  .../dts/freescale/imx8mp-phycore-som.dtsi     | 27
> > +++++++++++++++++++
> >  1 file changed, 27 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
> > b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
> > index 44a8c2337cee4..0284e7a5c6bba 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
> > @@ -65,6 +65,22 @@ ethphy1: ethernet-phy@0 {
> >  	};
> >  };
> >  
> > +&flexspi {
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&pinctrl_flexspi0>;
> > +	status = "okay";
> > +
> > +	flash0: mt25qu256aba@0 {
> > +		reg = <0>;
> > +		#address-cells = <1>;
> > +		#size-cells = <1>;
> > +		compatible = "jedec,spi-nor";
> 
> Please make the compatible the first property followed by the reg
> property. Also you don't need to add the #size-cells and #address-
> cells
> now since you don't add a child node.

but is this not similar to the label here? If you add partitions in the
bootloader you need the cells properties?

Teresa

> 
> Regards,
>   Marco
> 
> > +		spi-max-frequency = <80000000>;
> > +		spi-tx-bus-width = <4>;
> > +		spi-rx-bus-width = <4>;
> > +	};
> > +};
> > +
> >  &i2c1 {
> >  	clock-frequency = <400000>;
> >  	pinctrl-names = "default";
> > @@ -217,6 +233,17 @@ MX8MP_IOMUXC_GPIO1_IO15__GPIO1_IO15		
> > 0x11
> >  		>;
> >  	};
> >  
> > +	pinctrl_flexspi0: flexspi0grp {
> > +		fsl,pins = <
> > +			MX8MP_IOMUXC_NAND_ALE__FLEXSPI_A_SCLK		
> > 0x1c2
> > +			MX8MP_IOMUXC_NAND_CE0_B__FLEXSPI_A_SS0_B	0x8
> > 2
> > +			MX8MP_IOMUXC_NAND_DATA00__FLEXSPI_A_DATA00	0x8
> > 2
> > +			MX8MP_IOMUXC_NAND_DATA01__FLEXSPI_A_DATA01	0x8
> > 2
> > +			MX8MP_IOMUXC_NAND_DATA02__FLEXSPI_A_DATA02	0x8
> > 2
> > +			MX8MP_IOMUXC_NAND_DATA03__FLEXSPI_A_DATA03	0x8
> > 2
> > +		>;
> > +	};
> > +
> >  	pinctrl_i2c1: i2c1grp {
> >  		fsl,pins = <
> >  			MX8MP_IOMUXC_I2C1_SCL__I2C1_SCL		0x4
> > 00001c3
> > -- 
> > 2.29.2
> > 
> > 
> >