linux-kernel - Re: [PATCH v2] arm: dts: imx7: add QSPI

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Message-ID: <20200729083936.p5t66bf5envimgur@pengutronix.de>
Date:   Wed, 29 Jul 2020 10:39:36 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     robh+dt@...nel.org, frowand.list@...il.com
Cc:     Matthias Schiffer <matthias.schiffer@...tq-group.com>,
        Fabio Estevam <festevam@...il.com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        linux-kernel@...r.kernel.org, NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] arm: dts: imx7: add QSPI

Added Rob and Frank.

Maybe they can explain us this behaviour.

On 20-07-29 09:58, Marco Felsch wrote:
> Hi Matthias,
> 
> On 20-07-29 09:14, Matthias Schiffer wrote:
> > On Wed, 2020-07-29 at 09:11 +0200, Matthias Schiffer wrote:
> > > In preparation for an update of the TQ-Systems TQMa7x/MBa7x DTS, add
> > > the
> > > QSPI controller to imx7s.dtsi.
> > > 
> > > Based-on-patch-by: Han Xu <han.xu@....com>
> > > Signed-off-by: Matthias Schiffer <matthias.schiffer@...tq-group.com>
> > > ---
> > > 
> > > v2:
> > > - renamed node and label
> > > - reordered properties
> > > (as suggested by Marco Felsch)
> > 
> > Ugh, I neglected to check for compile warnings after adjusting the node
> > name. This now gives the following warning:
> > 
> > arch/arm/boot/dts/imx7s.dtsi:1165.24-1176.6: Warning (spi_bus_bridge): 
> > /soc/bus@...00000/qspi@...b0000: node name for SPI buses should be
> > 'spi'
> > 
> > So I guess this should be called spi@ after all?
> 
> Unfortunately yes, this would cause a longer discussion but it still
> seems wrong to me.
> 
> Regards,
>   Marco
> 
> > > 
> > > 
> > >  arch/arm/boot/dts/imx7s.dtsi | 13 +++++++++++++
> > >  1 file changed, 13 insertions(+)
> > > 
> > > diff --git a/arch/arm/boot/dts/imx7s.dtsi
> > > b/arch/arm/boot/dts/imx7s.dtsi
> > > index 1cfaf410aa43..22e4c38223bd 100644
> > > --- a/arch/arm/boot/dts/imx7s.dtsi
> > > +++ b/arch/arm/boot/dts/imx7s.dtsi
> > > @@ -1162,6 +1162,19 @@
> > >  				status = "disabled";
> > >  			};
> > >  
> > > +			qspi: qspi@...b0000 {
> > > +				compatible = "fsl,imx7d-qspi";
> > > +				reg = <0x30bb0000 0x10000>, <0x60000000
> > > 0x10000000>;
> > > +				reg-names = "QuadSPI", "QuadSPI-
> > > memory";
> > > +				#address-cells = <1>;
> > > +				#size-cells = <0>;
> > > +				interrupts = <GIC_SPI 107
> > > IRQ_TYPE_LEVEL_HIGH>;
> > > +				clocks = <&clks IMX7D_QSPI_ROOT_CLK>,
> > > +					<&clks IMX7D_QSPI_ROOT_CLK>;
> > > +				clock-names = "qspi_en", "qspi";
> > > +				status = "disabled";
> > > +			};
> > > +
> > >  			sdma: sdma@...d0000 {
> > >  				compatible = "fsl,imx7d-sdma",
> > > "fsl,imx35-sdma";
> > >  				reg = <0x30bd0000 0x10000>;
> > 
> > 
> 
> -- 
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> 

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