linux-kernel - Re: [PATCH 1/3] serial/imx: add device tree support

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Date:	Sun, 19 Jun 2011 15:40:11 +0800
From:	Shawn Guo <shawn.guo@...escale.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	Shawn Guo <shawn.guo@...aro.org>, <patches@...aro.org>,
	<netdev@...r.kernel.org>, <devicetree-discuss@...ts.ozlabs.org>,
	Jason Liu <jason.hui@...aro.org>,
	<linux-kernel@...r.kernel.org>,
	Jeremy Kerr <jeremy.kerr@...onical.com>,
	Sascha Hauer <s.hauer@...gutronix.de>
Subject: Re: [PATCH 1/3] serial/imx: add device tree support

On Sat, Jun 18, 2011 at 06:21:46PM +0200, Arnd Bergmann wrote:
> On Saturday 18 June 2011 17:19:12 Shawn Guo wrote:
> >
> > +Required properties:
> > +- compatible : should be "fsl,<soc>-uart", "fsl,imx-uart"
> > +- reg : address and length of the register set for the device
> > +- interrupts : should contain uart interrupt
> > +- id : should be the port ID defined by soc
> > +
> > +Optional properties:
> > +- fsl,has-rts-cts : indicate it has rts-cts
> > +- fsl,irda-mode : support irda mode
> > +
> > +Example:
> > +
> > +uart@...bc000 {
> > +	compatible = "fsl,imx51-uart", "fsl,imx-uart";
> > +	reg = <0x73fbc000 0x4000>;
> > +	interrupts = <31>;
> > +	id = <1>;
> > +	fsl,has-rts-cts;
> > +};
> 
> Should this also support the "clock-frequency" property that 8250-style
> serial ports support [1]?
> 
I would ignore it for a while until we have common clock api and
corresponding binding settled.  For now, I would have nothing clock
related parsed from device tree.

-- 
Regards,
Shawn

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