linux-kernel - Re: [PATCH] soc: imx: imx93-blk-ctrl: set priority level

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Message-ID: <20220725093056.ywr7zo37e4rbrvei@pengutronix.de>
Date:   Mon, 25 Jul 2022 11:30:56 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     Peng Fan <peng.fan@....com>
Cc:     "Peng Fan (OSS)" <peng.fan@....nxp.com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] soc: imx: imx93-blk-ctrl: set priority level

On 22-07-25, Peng Fan wrote:
> Hi Marco,
> 
> > Subject: Re: [PATCH] soc: imx: imx93-blk-ctrl: set priority level
> > 
> > Hi Peng,
> > 
> > thanks for the patch.
> > 
> > On 22-07-25, Peng Fan (OSS) wrote:
> > > From: Peng Fan <peng.fan@....com>
> > >
> > > i.MX93 mediamix blk ctrl has registers to set QoS(priority) value.
> > > It support default QoS value and cfg QoS value. Set an initial value
> > > from i.MX design team. If LCDIF/ISI/PXP wanna a different QoS value in
> > > future, they could use interconnect to request bandwidth.
> > 
> > I need to ask here. Does the iMX93 use the same interconnect as the
> > iMX8M* does?
> 
> No. i.MX93 use different interconnect, it has different design, 
> the QoS priority register are distributed in blk ctrl. 

Did just the interface change e.g. how you configure the interconnect or
is it a complete new interconnect?

> The reference manual would be public soon I think, then you could
> have more information.

Looking forward to it :)

Regards,
  Marco