linux-kernel - RE: [PATCH v3] i3c: master: support to adjust first broadcast address speed

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Message-ID:
 <VI1PR04MB5005B62A894346ECDDA70384E89D2@VI1PR04MB5005.eurprd04.prod.outlook.com>
Date: Thu, 5 Sep 2024 01:47:03 +0000
From: Carlos Song <carlos.song@....com>
To: Frank Li <frank.li@....com>, Miquel Raynal <miquel.raynal@...tlin.com>
CC: "alexandre.belloni@...tlin.com" <alexandre.belloni@...tlin.com>,
	"linux-i3c@...ts.infradead.org" <linux-i3c@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"imx@...ts.linux.dev" <imx@...ts.linux.dev>, dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH v3] i3c: master: support to adjust first broadcast address
 speed

> -----Original Message-----
> From: Frank Li <frank.li@....com>
> Sent: Thursday, September 5, 2024 3:08 AM
> To: Miquel Raynal <miquel.raynal@...tlin.com>
> Cc: Carlos Song <carlos.song@....com>; alexandre.belloni@...tlin.com;
> linux-i3c@...ts.infradead.org; linux-kernel@...r.kernel.org; imx@...ts.linux.dev;
> dl-linux-imx <linux-imx@....com>
> Subject: Re: [PATCH v3] i3c: master: support to adjust first broadcast address
> speed
> 
> On Mon, Aug 26, 2024 at 10:13:23AM +0200, Miquel Raynal wrote:
> > Hi Carlos,
> >
> > carlos.song@....com wrote on Mon, 26 Aug 2024 13:09:57 +0800:
> >
> > > From: Carlos Song <carlos.song@....com>
> > >
> 
> carlos:
> 
> 	I just realize you missed sent out svc implement.
> 
> https://lore.kernel.org/linux-i3c/20240807061306.3143528-2-carlos.song@nxp.
> com/T/#u
> 
> 	Suppose both patches should send out together.
> 
> Frank
> 

Sorry for this. I will send both again together.

> > > According to I3C spec 6.2 Timing Specification, the Open Drain High
> > > Period of SCL Clock timing for first broadcast address should be
> > > adjusted to 200ns at least. I3C device working as i2c device will
> > > see the broadcast to close its Spike Filter then change to work at
> > > I3C mode. After that I3C open drain SCL high level should be adjusted back.
> > >
> > > Signed-off-by: Carlos Song <carlos.song@....com>
> > > Reviewed-by: Frank Li <Frank.Li@....com>
> >
> > Reviewed-by: Miquel Raynal <miquel.raynal@...tlin.com>
> >
> > Frank, did you test it with eg. the Silvaco master?
> >
> > Thanks,
> > Miquèl
> >
> > --
> > linux-i3c mailing list
> > linux-i3c@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-i3c

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