linux-kernel - Re: [PATCH 6/7] Documentation: atmel-quadspi: add binding file for Atmel QSPI driver

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Message-ID: <55A8EAAE.6010506@cogentembedded.com>
Date:	Fri, 17 Jul 2015 14:44:46 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Cyrille Pitchen <cyrille.pitchen@...el.com>,
	nicolas.ferre@...el.com, broonie@...nel.org,
	linux-spi@...r.kernel.org, dwmw2@...radead.org,
	computersforpeace@...il.com, zajec5@...il.com, beanhuo@...ron.com,
	juhosg@...nwrt.org, marex@...x.de, shijie.huang@...el.com,
	ben@...adent.org.uk
Cc:	mark.rutland@....com, devicetree@...r.kernel.org,
	pawel.moll@....com, ijc+devicetree@...lion.org.uk,
	linux-kernel@...r.kernel.org, robh+dt@...nel.org,
	linux-mtd@...ts.infradead.org, galak@...eaurora.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 6/7] Documentation: atmel-quadspi: add binding file for
 Atmel QSPI driver

Hello.

On 7/16/2015 6:27 PM, Cyrille Pitchen wrote:

> This patch documents the DT bindings for the driver of the Atmel QSPI
> controller embedded inside sama5d2x SoCs.

> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@...el.com>
> ---
>   .../devicetree/bindings/mtd/atmel-quadspi.txt      | 29 ++++++++++++++++++++++
>   1 file changed, 29 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/mtd/atmel-quadspi.txt

> diff --git a/Documentation/devicetree/bindings/mtd/atmel-quadspi.txt b/Documentation/devicetree/bindings/mtd/atmel-quadspi.txt
> new file mode 100644
> index 000000000000..a0d60ac7ae10
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/atmel-quadspi.txt
> @@ -0,0 +1,29 @@
> +* Atmel Quad Serial Peripheral Interface (QSPI)
> +
> +Required properties:
> +  - compatible : Should be "atmel,sama5d2-qspi"
> +  - reg : the first contains the register location and length,
> +          the second contains the memory mapping address and length
> +  - interrupts : Should contain the interrupt for the device
> +  - clocks : The clock needed by the QSPI controller
> +  - #address-cells : should be 1
> +  - #size-cells : should be 0
> +
> +Example:
> +
> +qspi0: qspi@...20000 {

     Once again, the ePAPR standard tells up to call the node just "spi", not 
"qspi".

> +	compatible = "atmel,sama5d2-qspi";
> +	reg = <0xf0020000 0x100>,
> +	      <0xd0000000 0x08000000>;

    Either you use the leading zeroes or you don't. :-)

[...]

MBR, Sergei

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