From: s-anna@ti•com (Suman Anna)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2 1/3] mailbox/omap: Add ti,mbox-send-noirq quirk to fix AM33xx CPU Idle
Date: Wed, 5 Aug 2015 10:32:30 -0500 [thread overview]
Message-ID: <55C22C8E.3000506@ti.com> (raw)
In-Reply-To: <20150805102840.GA16878@atomide.com>
Hi Tony,
On 08/05/2015 05:28 AM, Tony Lindgren wrote:
> * Dave Gerlach <d-gerlach@ti•com> [150717 13:59]:
>> --- a/Documentation/devicetree/bindings/mailbox/omap-mailbox.txt
>> +++ b/Documentation/devicetree/bindings/mailbox/omap-mailbox.txt
>> @@ -75,6 +75,14 @@ data that represent the following:
>> Cell #3 (usr_id) - mailbox user id for identifying the interrupt line
>> associated with generating a tx/rx fifo interrupt.
>>
>> +Optional Properties:
>> +--------------------
>> +- ti,mbox-send-noirq: Quirk flag to allow the client user of this sub-mailbox
>> + to send messages without triggering a Tx ready interrupt,
>> + and to control the Tx ticker. Should be used only on
>> + sub-mailboxes used to communicate with WkupM3 remote
>> + processor on AM33xx/AM43xx SoCs.
>> +
>
> Hmm can't you do this just by setting a flag in the device driver
> based on the compatible string?
We can't because there can be other users like PRUSS which will use a
sub-mailbox in a regular fashion. The compatible serves the IP and there
can be multiple sub-mailboxes underneath it, and this quirk is needed
only on the one that's used by the WkupM3.
Jassi,
Do you have any comments on this?
regards
Suman
next prev parent reply other threads:[~2015-08-05 15:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-17 20:56 [PATCH v2 0/3] soc: ti: Introduce wkup_m3_ipc driver Dave Gerlach
2015-07-17 20:56 ` [PATCH v2 1/3] mailbox/omap: Add ti, mbox-send-noirq quirk to fix AM33xx CPU Idle Dave Gerlach
2015-08-05 10:28 ` Tony Lindgren
2015-08-05 15:32 ` Suman Anna [this message]
2015-08-06 6:29 ` Tony Lindgren
2015-07-17 20:56 ` [PATCH v2 2/3] Documentation: dt: add bindings for TI Wakeup M3 IPC device Dave Gerlach
2015-07-17 20:56 ` [PATCH v2 3/3] soc: ti: Add wkup_m3_ipc driver Dave Gerlach
2015-07-20 6:16 ` Tony Lindgren
2015-08-04 20:58 ` Dave Gerlach
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