linux-kernel - RE: [PATCH 2/2] firmware: imx: MU IRQ group number should be 7

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Message-ID: <DB3PR0402MB391699FFA107CD570B943705F5D00@DB3PR0402MB3916.eurprd04.prod.outlook.com>
Date:   Fri, 24 Apr 2020 02:36:20 +0000
From:   Anson Huang <anson.huang@....com>
To:     Aisheng Dong <aisheng.dong@....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>,
        "ben.dooks@...ethink.co.uk" <ben.dooks@...ethink.co.uk>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH 2/2] firmware: imx: MU IRQ group number should be 7



> -----Original Message-----
> From: Aisheng Dong <aisheng.dong@....com>
> Sent: 2020年4月24日 10:33
> To: Anson Huang <anson.huang@....com>; shawnguo@...nel.org;
> s.hauer@...gutronix.de; kernel@...gutronix.de; festevam@...il.com;
> ben.dooks@...ethink.co.uk; linux-arm-kernel@...ts.infradead.org;
> linux-kernel@...r.kernel.org
> Cc: dl-linux-imx <linux-imx@....com>
> Subject: RE: [PATCH 2/2] firmware: imx: MU IRQ group number should be 7
> 
> > From: Anson Huang <Anson.Huang@....com>
> > Sent: Friday, April 24, 2020 7:07 AM
> >
> > The MU IRQ group number should be 7 instead of 4.
> >
> > Signed-off-by: Anson Huang <Anson.Huang@....com>
> 
> Are we using others IRQ group?
> If not, this change may slow down the irq handling speed.

The irq handling is using work queue, NOT in ISR, so the speed is NOT that sensitive.
The scu group irq driver should provide full functions, as other drivers using it may enable
the group they want.

Anson