From: Jim Quinlan <jim2101024@gmail.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 v3 1/2] dt-bindings: arm: Add optional interrupt to smc/hvc SCMI transport
Date: Wed, 16 Dec 2020 15:58:01 -0500 [thread overview]
Message-ID: <20201216205805.4221-2-james.quinlan@broadcom.com> (raw)
In-Reply-To: <20201216205805.4221-1-james.quinlan@broadcom.com>
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 b5ce5b39bb9c..667d58e0a659 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 "a2p".
+
See Documentation/devicetree/bindings/mailbox/mailbox.txt for more details
about the generic mailbox controller and client driver bindings.
--
2.17.1
next prev parent reply other threads:[~2020-12-16 20:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-16 20:58 [PATCH v3 0/2] firmware: arm_scmi: Augment SMC/HVC to allow optional interrupt Jim Quinlan
2020-12-16 20:58 ` Jim Quinlan [this message]
2020-12-21 20:17 ` [PATCH v3 1/2] dt-bindings: arm: Add optional interrupt to smc/hvc SCMI transport Rob Herring
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