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

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Date:   Tue, 28 Jul 2020 15:51:55 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     Matthias Schiffer <matthias.schiffer@...tq-group.com>
Cc:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        linux-kernel@...r.kernel.org, NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm: dts: imx7: add QSPI

Hi Matthias,

thanks for the patch.

On 20-07-28 13:28, 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>
> ---
>  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..e45683e61593 100644
> --- a/arch/arm/boot/dts/imx7s.dtsi
> +++ b/arch/arm/boot/dts/imx7s.dtsi
> @@ -1162,6 +1162,19 @@
>  				status = "disabled";
>  			};
>  
> +			qspi1: spi@...b0000 {

Are there more controllers and why not using "qspi@...b0000" as node
name?

> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				compatible = "fsl,imx7d-qspi";
> +				reg = <0x30bb0000 0x10000>, <0x60000000 0x10000000>;
> +				reg-names = "QuadSPI", "QuadSPI-memory";

The node should begin with compatible, reg, reg-names properties.
Pls check the current .dtsi file for examples.

> +				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>;

Regards,
  Marco