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

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Message-ID: <20210308092823.a3ffj4auysnoti6o@pengutronix.de>
Date:   Mon, 8 Mar 2021 10:28:23 +0100
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     Teresa Remmet <T.Remmet@...tec.de>
Cc:     "hs@...x.de" <hs@...x.de>, "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

On 21-03-08 08:52, Teresa Remmet wrote:
> 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?

If the bootloader will add partitions the bootloader can add the
size/address-cells too using the phandle. But this is more a nit.

Regards,
  Marco

> 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
> > > 
> > > 
> > > 

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