linux-kernel - Re: [PATCH 2/5] usb: gadget: s3c-hsotg: support configurable UTMI PHY width

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Date:	Thu, 10 Oct 2013 10:29:22 -0500
From:	Felipe Balbi <balbi@...com>
To:	Matt Porter <matt.porter@...aro.org>
CC:	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dia.com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Christian Daudt <bcm@...thebug.org>,
	Paul Zimmerman <paulz@...opsys.com>,
	Linux USB List <linux-usb@...r.kernel.org>,
	Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Devicetree List <devicetree@...r.kernel.org>,
	Linaro Patches <patches@...aro.org>
Subject: Re: [PATCH 2/5] usb: gadget: s3c-hsotg: support configurable UTMI
 PHY width

On Mon, Oct 07, 2013 at 06:12:29AM -0400, Matt Porter wrote:
> Extend dwc2 binding with an optional utmi phy width property.
> Enable the s3c-hsotg.c driver to use standard dwc2 binding
> and enable configuration of the UTMI phy width based on the
> property.
> 
> Signed-off-by: Matt Porter <matt.porter@...aro.org>
> Reviewed-by: Markus Mayer <markus.mayer@...aro.org>
> Reviewed-by: Tim Kryger <tim.kryger@...aro.org>
> ---
>  Documentation/devicetree/bindings/staging/dwc2.txt |  4 ++++
>  drivers/usb/gadget/s3c-hsotg.c                     | 18 +++++++++++++++++-
>  drivers/usb/gadget/s3c-hsotg.h                     |  1 +
>  3 files changed, 22 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/staging/dwc2.txt b/Documentation/devicetree/bindings/staging/dwc2.txt
> index 1a1b7cf..fb6b8ee 100644
> --- a/Documentation/devicetree/bindings/staging/dwc2.txt
> +++ b/Documentation/devicetree/bindings/staging/dwc2.txt
> @@ -6,10 +6,14 @@ Required properties:
>  - reg : Should contain 1 register range (address and length)
>  - interrupts : Should contain 1 interrupt
>  
> +Optional properties:
> +- snps,phy-utmi-width: Must contain the UTMI data width (either 8 or 16)

isn't this available in any of the configuration registers ?

>  Example:
>  
>          usb@...c0000 {
>                  compatible = "ralink,rt3050-usb, snps,dwc2";
>                  reg = <0x101c0000 40000>;
>                  interrupts = <18>;
> +		snps,phy-utmi-width = <8>;

indentation.

-- 
balbi

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