From: Jim Quinlan <jim2101024@gmail.com>
To: Sudeep Holla <sudeep.holla@arm.com>,
bcm-kernel-feedback-list@broadcom.com, jim2101024@gmail.com,
james.quinlan@broadcom.com
Cc: Rob Herring <robh+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org (open list:SYSTEM CONTROL &
POWER/MANAGEMENT INTERFACE Mes...),
devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
FLATTENED DEVICE TREE BINDINGS),
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v4 1/2] dt-bindings: arm: Add optional interrupt to smc/hvc SCMI transport
Date: Tue, 22 Dec 2020 09:56:02 -0500 [thread overview]
Message-ID: <20201222145603.40192-2-jim2101024@gmail.com> (raw)
In-Reply-To: <20201222145603.40192-1-jim2101024@gmail.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 "a2p" which is used instead to
indicate the completion of a message.
Signed-off-by: Jim Quinlan <jim2101024@gmail.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:[~2020-12-22 14:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-22 14:56 [PATCH v4 0/2] firmware: arm_scmi: Augment SMC/HVC to allow optional interrupt Jim Quinlan
2020-12-22 14:56 ` Jim Quinlan [this message]
2020-12-23 2:48 ` [PATCH v4 1/2] dt-bindings: arm: Add optional interrupt to smc/hvc SCMI transport Florian Fainelli
2021-01-03 16:40 ` Rob Herring
2021-01-04 14:57 ` [PATCH v4 0/2] firmware: arm_scmi: Augment SMC/HVC to allow optional interrupt Jim Quinlan
2021-01-04 16:02 ` Sudeep Holla
2021-01-11 18:30 ` Sudeep Holla
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