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

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Message-ID: <DU0PR04MB9417BBDAE35E932F7601F94788959@DU0PR04MB9417.eurprd04.prod.outlook.com>
Date:   Mon, 25 Jul 2022 09:02:01 +0000
From:   Peng Fan <peng.fan@....com>
To:     Marco Felsch <m.felsch@...gutronix.de>,
        "Peng Fan (OSS)" <peng.fan@....nxp.com>
CC:     "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

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. 

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

Regards,
Peng.
> 
> Regards,
>   Marco