Hi Tony,

On 08/05/2015 05:28 AM, Tony Lindgren wrote:

* Dave Gerlach [off-list ref] [150717 13:59]:

quoted

--- 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