From: Ray Jui <ray.jui@broadcom.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>,
Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-kernel@vger.kernel.org,
bcm-kernel-feedback-list@broadcom.com,
linux-arm-kernel@lists.infradead.org,
Ray Jui <ray.jui@broadcom.com>,
Alex Barba <alex.barba@broadcom.com>
Subject: [PATCH 1/2] dt-bindings: arm,gic: Indtroduce optional property 'arm,msi-offset-spi' for gicv2m
Date: Tue, 3 May 2016 16:47:24 -0700 [thread overview]
Message-ID: <1462319245-32532-2-git-send-email-ray.jui@broadcom.com> (raw)
In-Reply-To: <1462319245-32532-1-git-send-email-ray.jui@broadcom.com>
Update the GICv2m binding document by adding an optional property
'arm,msi-offset-spi'.
Some implementations of gicv2m have an erratum where the MSI data is
the SPI number subtracted by an offset. This is required for the
correct MSI interrupt to be triggered.
Signed-off-by: Ray Jui <ray.jui@broadcom.com>
---
Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
index 793c20f..550960f 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
@@ -140,6 +140,12 @@ Optional properties:
value, this property should contain the number of
SPIs assigned to the frame, overriding the HW value.
+- arm,msi-offset-spi: Some implementations of gicv2m have an erratum where
+ the MSI data is the SPI number subtracted by an offset.
+ This is required for the correct MSI interrupt to be
+ triggered. This property should contain the required
+ offset.
+
Example:
interrupt-controller@e1101000 {
--
2.1.4
next prev parent reply other threads:[~2016-05-03 23:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 23:47 [PATCH 0/2] Add DT based gicv2m spi offset support Ray Jui
2016-05-03 23:47 ` Ray Jui [this message]
2016-05-04 15:57 ` [PATCH 1/2] dt-bindings: arm,gic: Indtroduce optional property 'arm,msi-offset-spi' for gicv2m Chris Brand
2016-05-04 16:11 ` Ray Jui
2016-05-03 23:47 ` [PATCH 2/2] irqchip/gic-v2m: Add workaround for Broadcom NS2 GICv2m erratum Ray Jui
2016-05-04 7:49 ` Marc Zyngier
2016-05-04 16:20 ` Ray Jui
2016-05-04 17:25 ` Marc Zyngier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1462319245-32532-2-git-send-email-ray.jui@broadcom.com \
--to=ray.jui@broadcom.com \
--cc=alex.barba@broadcom.com \
--cc=bcm-kernel-feedback-list@broadcom.com \
--cc=jason@lakedaemon.net \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=marc.zyngier@arm.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox