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From: Jim Quinlan <james.quinlan@broadcom.com>
To: Sudeep Holla <sudeep.holla@arm.com>,
	bcm-kernel-feedback-list@broadcom.com,
	james.quinlan@broadcom.com
Cc: Rob Herring <robh+dt@kernel.org>,
	devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
	FLATTENED DEVICE TREE BINDINGS),
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v2 1/2] dt-bindings: arm: Add optional interrupt to smc/hvc SCMI transport
Date: Thu, 12 Nov 2020 12:56:26 -0500	[thread overview]
Message-ID: <20201112175632.42234-2-james.quinlan@broadcom.com> (raw)
In-Reply-To: <20201112175632.42234-1-james.quinlan@broadcom.com>

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In normal use of smc/hvc transport in SCMI the message completion is
indicated by the return of the SMC call.  This commit provides for an
optional interrupt named "message-serviced" which is used instead to
indicate the completion of a message.

Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com>
---
 Documentation/devicetree/bindings/arm/arm,scmi.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/arm,scmi.txt b/Documentation/devicetree/bindings/arm/arm,scmi.txt
index 55deb68230eb..7cdad11f40b1 100644
--- a/Documentation/devicetree/bindings/arm/arm,scmi.txt
+++ b/Documentation/devicetree/bindings/arm/arm,scmi.txt
@@ -31,6 +31,14 @@ Optional properties:
 
 - mbox-names: shall be "tx" or "rx" depending on mboxes entries.
 
+- interrupts : when using smc or hvc transports, this optional
+	 property indicates that msg completion by the platform is indicated
+	 by an interrupt rather than by the return of the smc call. This
+	 should not be used except when the platform requires such behavior.
+
+- interrupt-names : if "interrupts" is present, interrupt-names must also
+	 be present and have the value "message-serviced".
+
 See Documentation/devicetree/bindings/mailbox/mailbox.txt for more details
 about the generic mailbox controller and client driver bindings.
 
-- 
2.17.1


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  reply	other threads:[~2020-11-12 17:56 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-12 17:56 [PATCH v2 0/2] firmware: arm_scmi: Augment SMC/HVC to allow optional interrupt Jim Quinlan
2020-11-12 17:56 ` Jim Quinlan [this message]
2020-11-20 17:20   ` [PATCH v2 1/2] dt-bindings: arm: Add optional interrupt to smc/hvc SCMI transport Jim Quinlan
2020-12-07 19:01   ` Rob Herring
2020-12-07 19:49     ` Jim Quinlan
2020-11-12 17:56 ` [PATCH v2 2/2] firmware: arm_scmi: Augment SMC/HVC to allow optional interrupt Jim Quinlan
2020-11-13  9:47   ` Sudeep Holla
2020-11-13 14:26     ` Jim Quinlan
2020-11-13 14:36       ` Sudeep Holla
2020-11-13 15:12         ` Jim Quinlan
2020-11-19 18:34           ` Jim Quinlan
2020-11-20 11:14             ` Sudeep Holla
2020-11-20 13:27               ` Jim Quinlan
2020-11-20 14:09                 ` Sudeep Holla

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