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Message-ID: <BY5PR12MB49020AC690EFE6F21A81962981AA9@BY5PR12MB4902.namprd12.prod.outlook.com>
Date:   Wed, 22 Feb 2023 05:28:29 +0000
From:   "Datta, Shubhrajyoti" <shubhrajyoti.datta@....com>
To:     "Shah, Tanmay" <tanmay.shah@....com>,
        "Simek, Michal" <michal.simek@....com>,
        "andersson@...nel.org" <andersson@...nel.org>,
        "mathieu.poirier@...aro.org" <mathieu.poirier@...aro.org>,
        "jaswinder.singh@...aro.org" <jaswinder.singh@...aro.org>,
        "Levinsky, Ben" <ben.levinsky@....com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-remoteproc@...r.kernel.org" <linux-remoteproc@...r.kernel.org>,
        "Shah, Tanmay" <tanmay.shah@....com>
Subject: RE: [PATCH v3 1/3] drivers: mailbox: zynqmp: handle multiple child
 nodes

[AMD Official Use Only - General]

Hi,


> -----Original Message-----
> From: Tanmay Shah <tanmay.shah@....com>
> Sent: Tuesday, February 14, 2023 2:48 AM
> To: Simek, Michal <michal.simek@....com>; andersson@...nel.org;
> mathieu.poirier@...aro.org; jaswinder.singh@...aro.org; Levinsky, Ben
> <ben.levinsky@....com>; Datta, Shubhrajyoti
> <shubhrajyoti.datta@....com>
> Cc: linux-kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> linux-remoteproc@...r.kernel.org; Shah, Tanmay
> <tanmay.shah@....com>
> Subject: [PATCH v3 1/3] drivers: mailbox: zynqmp: handle multiple child
> nodes
> 
> As of now only one child node is handled by zynqmp-ipi mailbox driver.
> Upon introducing remoteproc r5 core mailbox nodes, found few
> enhancements in Xilinx zynqmp mailbox driver as following:
> 
> - fix mailbox child node counts
>   If child mailbox node status is disabled it causes
>   crash in interrupt handler. Fix this by assigning
>   only available child node during driver probe.
> 
> - fix typo in IPI documentation %s/12/32/
>   Xilinx IPI message buffers allows 32-byte data transfer.
>   Fix documentation that says 12 bytes
> 
> - fix bug in zynqmp-ipi isr handling
>   Multiple IPI channels are mapped to same interrupt handler.
>   Current isr implementation handles only one channel per isr.
>   Fix this behavior by checking isr status bit of all child
>   mailbox nodes.

It does multiple things it will be good if one patch does one stuff.

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