linux-kernel - Re: [PATCH v2 2/5] Documentation: DT: Add bindings for Spreadtrum Sharkl Platform

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Date:	Fri, 17 Oct 2014 13:50:34 +0100
From:	Mark Rutland <mark.rutland@....com>
To:	Chunyan Zhang <chunyan.zhang@...eadtrum.com>
Cc:	Catalin Marinas <Catalin.Marinas@....com>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"jslaby@...e.cz" <jslaby@...e.cz>,
	"galak@...eaurora.org" <galak@...eaurora.org>,
	"broonie@...aro.org" <broonie@...aro.org>,
	"m-karicheri2@...com" <m-karicheri2@...com>,
	Pawel Moll <Pawel.Moll@....com>,
	"artagnon@...il.com" <artagnon@...il.com>,
	"rrichter@...ium.com" <rrichter@...ium.com>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	Will Deacon <Will.Deacon@....com>,
	"orsonzhai@...il.com" <orsonzhai@...il.com>,
	"geng.ren@...eadtrum.com" <geng.ren@...eadtrum.com>,
	"zhizhou.zhang@...eadtrum.com" <zhizhou.zhang@...eadtrum.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"sprdlinux@...elists.org" <sprdlinux@...elists.org>
Subject: Re: [PATCH v2 2/5] Documentation: DT: Add bindings for Spreadtrum
 Sharkl Platform

On Fri, Oct 17, 2014 at 10:54:22AM +0100, Chunyan Zhang wrote:
> Adds Spreadtrum's prefix "sprd" to vendor-prefixes file.
> Adds the devicetree binding documentation for Spreadtrum's serial
> and Sharkl3 SoC based on the Sharkl Platform which is the 64-bit
> SoC Platform of Spreadtrum.
> 
> Signed-off-by: Chunyan Zhang <chunyan.zhang@...eadtrum.com>
> ---
>  Documentation/devicetree/bindings/arm/sprd.txt     |   11 +++++++++++
>  .../devicetree/bindings/serial/sprd-serial.txt     |    6 ++++++
>  .../devicetree/bindings/vendor-prefixes.txt        |    1 +
>  3 files changed, 18 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/sprd.txt
>  create mode 100644 Documentation/devicetree/bindings/serial/sprd-serial.txt
> 
> diff --git a/Documentation/devicetree/bindings/arm/sprd.txt b/Documentation/devicetree/bindings/arm/sprd.txt
> new file mode 100644
> index 0000000..40b40d6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/sprd.txt
> @@ -0,0 +1,11 @@
> +Spreadtrum Sharkl Platforms Device Tree Bindings
> +----------------------------------------------------
> +
> +Sharkl is a Spreadtrum's SoC Platform which is based
> +on ARM 64-bit processor.
> +
> +Sharkl3 FPGA board with Sharkl3 SoC based on the
> +Sharkl Platform shall have the following properties.
> +
> +Required root node properties:
> +        - compatible = "sprd,sharkl3-fpga", "sprd,sharkl3";
> diff --git a/Documentation/devicetree/bindings/serial/sprd-serial.txt b/Documentation/devicetree/bindings/serial/sprd-serial.txt
> new file mode 100644
> index 0000000..c97b0a6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/serial/sprd-serial.txt
> @@ -0,0 +1,6 @@
> +* Spreadtrum serial UART
> +
> +Required properties:
> +- compatible: must be "sprd,serial"
> +- reg: offset and length of the register set for the device
> +- interrupts: exactly one interrupt specifier

I'm still a little wary of then name "sprd,serial". What was the first
device to feature this UART, if it doesn't have a specific name of its
own?

> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> index ac7269f..5dbf7db 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> @@ -129,6 +129,7 @@ smsc	Standard Microsystems Corporation
>  snps 	Synopsys, Inc.
>  solidrun	SolidRun
>  spansion	Spansion Inc.
> +sprd	Spreadtrum Communications Inc.
>  st	STMicroelectronics
>  ste	ST-Ericsson
>  stericsson	ST-Ericsson

The vendor prefix addition looks fine to me.

Thanks,
Mark.
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