linux-kernel - Re: [PATCH v8 3/3] ARM: dts: imx6q-evi: support cyclone-ps-spi

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Date:   Mon, 23 Jan 2017 22:00:15 -0200
From:   Fabio Estevam <festevam@...il.com>
To:     Joshua Clayton <stillcompiling@...il.com>
Cc:     Alan Tull <atull@...nsource.altera.com>,
        Moritz Fischer <moritz.fischer@...us.com>,
        Russell King <linux@...linux.org.uk>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Anatolij Gustschin <agust@...x.de>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>, linux-fpga@...r.kernel.org
Subject: Re: [PATCH v8 3/3] ARM: dts: imx6q-evi: support cyclone-ps-spi

On Mon, Jan 23, 2017 at 8:51 PM, Joshua Clayton
<stillcompiling@...il.com> wrote:
> Add support for Altera cyclone V FPGA connected to an spi port
> to the evi devicetree file
>
> Signed-off-by: Joshua Clayton <stillcompiling@...il.com>
> ---
>  arch/arm/boot/dts/imx6q-evi.dts | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/arch/arm/boot/dts/imx6q-evi.dts b/arch/arm/boot/dts/imx6q-evi.dts
> index 24fe093..a0cbb2d 100644
> --- a/arch/arm/boot/dts/imx6q-evi.dts
> +++ b/arch/arm/boot/dts/imx6q-evi.dts
> @@ -82,6 +82,15 @@
>         pinctrl-names = "default";
>         pinctrl-0 = <&pinctrl_ecspi1 &pinctrl_ecspi1cs>;
>         status = "okay";
> +
> +       fpga_spi: cyclonespi@0 {
> +               compatible = "altr,fpga-passive-serial";
> +               spi-max-frequency = <20000000>;
> +               reg = <0>;
> +               pinctrl-0 = <&pinctrl_fpgaspi>;
> +               nconfig-gpios = <&gpio4 9 GPIO_ACTIVE_LOW>;
> +               nstat-gpios = <&gpio4 11 GPIO_ACTIVE_LOW>;

Your binding doc says that 'confd-gpios ' is a required property, but
you did not put it here.

Either it is missing here or you should mention that it is optional in
the binding doc.