From: Rasmus Villemoes <rasmus.villemoes-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
To: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Shawn Guo <shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>,
Marc Zyngier <marc.zyngier-5wv7dgnIgG8@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: Andy Tang <andy.tang-3arQi8VN3Tc@public.gmane.org>,
Alexander Stein
<alexander.stein-93q1YBGzJSMe9JSWTWOYM3xStJ4P+DSV@public.gmane.org>,
Rasmus Villemoes
<rasmus.villemoes-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH v4 2/2] dt/bindings: Add bindings for Layerscape external irqs
Date: Thu, 25 Jan 2018 16:02:30 +0100 [thread overview]
Message-ID: <20180125150230.7234-2-rasmus.villemoes@prevas.dk> (raw)
In-Reply-To: <20180125150230.7234-1-rasmus.villemoes-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
This adds Device Tree binding documentation for the external interrupt
lines with configurable polarity present on some Layerscape SOCs.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
---
Changes since v3: Add non-empty commit log.
.../interrupt-controller/fsl,ls-extirq.txt | 44 ++++++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/fsl,ls-extirq.txt
diff --git a/Documentation/devicetree/bindings/interrupt-controller/fsl,ls-extirq.txt b/Documentation/devicetree/bindings/interrupt-controller/fsl,ls-extirq.txt
new file mode 100644
index 000000000000..a71ce2c3eeae
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/fsl,ls-extirq.txt
@@ -0,0 +1,44 @@
+* Freescale Layerscape external IRQs
+
+Some Layerscape SOCs (LS1021A, LS1043A, LS1046A) support inverting
+the polarity of certain external interrupt lines.
+
+The device node must be a child of the node representing the
+Supplemental Configuration Unit (SCFG).
+
+Required properties:
+- compatible: should be "fsl,<soc-name>-extirq", e.g. "fsl,ls1021a-extirq".
+- interrupt-controller: Identifies the node as an interrupt controller
+- #interrupt-cells: Use the same format as specified by GIC in arm,gic.txt.
+- interrupt-parent: phandle of GIC.
+- offset: offset to the Interrupt Polarity Control Register (INTPCR)
+ register in the SCFG.
+- interrupts: Specifies the mapping to interrupt numbers in the parent
+ interrupt controller. Interrupts are mapped one-to-one to parent
+ interrupts.
+
+Optional properties:
+- fsl,bit-reverse: This boolean property should be set on the LS1021A
+ if the SCFGREVCR register has been set to all-ones (which is usually
+ the case), meaning that all reads and writes of SCFG registers are
+ implicitly bit-reversed. Other compatible platforms do not have such
+ a register.
+
+Example:
+ scfg: scfg@1570000 {
+ compatible = "fsl,ls1021a-scfg", "syscon";
+ ...
+ extirq: interrupt-controller {
+ compatible = "fsl,ls1021a-extirq";
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ interrupt-parent = <&gic>;
+ offset = <0x1ac>;
+ interrupts = <163 164 165 167 168 169>;
+ fsl,bit-reverse;
+ };
+ };
+
+
+ interrupts-extended = <&gic GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,
+ <&extirq GIC_SPI 1 IRQ_TYPE_LEVEL_LOW>;
--
2.15.1
--
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next prev parent reply other threads:[~2018-01-25 15:02 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <48d2d08c-c57a-ce49-5958-0fd5ad4a2dc7@arm.com>
2017-12-08 14:33 ` [RFC] irqchip: add support for LS1021A external interrupt lines Rasmus Villemoes
[not found] ` <1512743580-15358-1-git-send-email-rasmus.villemoes-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2017-12-08 15:11 ` Alexander Stein
2017-12-08 16:09 ` Marc Zyngier
2017-12-11 9:08 ` Rasmus Villemoes
[not found] ` <58297576-cc32-819d-c6b3-7d1355095482-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2017-12-11 9:45 ` Alexander Stein
2017-12-11 10:02 ` Alexander Stein
2017-12-11 13:45 ` Rasmus Villemoes
2017-12-11 14:06 ` Rasmus Villemoes
[not found] ` <7badefae-a952-7839-0bfe-dcd09ea1204f-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2017-12-11 14:38 ` Alexander Stein
2017-12-08 16:02 ` Marc Zyngier
[not found] ` <da843420-cede-e787-838d-1fd48e3ca7dd-5wv7dgnIgG8@public.gmane.org>
2017-12-11 9:30 ` Rasmus Villemoes
[not found] ` <563e0aaa-faf9-ae6a-ccd4-2aa89d7e457b-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2017-12-11 18:29 ` Marc Zyngier
2017-12-12 23:28 ` Rob Herring
2017-12-15 22:55 ` Rasmus Villemoes
[not found] ` <62c4af0c-ffe5-23c9-9ef6-2e4b8ab90050-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2017-12-21 22:45 ` Rob Herring
[not found] ` <1513758631-19909-1-git-send-email-rasmus.villemoes@prevas.dk>
[not found] ` <1513758631-19909-1-git-send-email-rasmus.villemoes-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2017-12-20 8:30 ` [PATCH v2 2/2] dt/bindings: Add bindings for Layerscape external irqs Rasmus Villemoes
[not found] ` <1513758631-19909-2-git-send-email-rasmus.villemoes-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2017-12-21 22:44 ` Rob Herring
[not found] ` <20180122092133.23177-1-rasmus.villemoes@prevas.dk>
2018-01-22 9:21 ` [PATCH v3 " Rasmus Villemoes
2018-01-24 15:28 ` Marc Zyngier
[not found] ` <20180125150230.7234-1-rasmus.villemoes@prevas.dk>
[not found] ` <20180125150230.7234-1-rasmus.villemoes-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2018-01-25 15:02 ` Rasmus Villemoes [this message]
[not found] ` <20180125150230.7234-2-rasmus.villemoes-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2018-02-05 6:07 ` [PATCH v4 " Rob Herring
2018-02-08 15:08 ` Rasmus Villemoes
[not found] ` <15ac0da3-e85b-c6be-366a-368934752018-rjjw5hvvQKZaa/9Udqfwiw@public.gmane.org>
2018-02-09 9:47 ` Marc Zyngier
[not found] ` <20180223210901.23480-1-rasmus.villemoes@prevas.dk>
2018-02-23 21:09 ` [PATCH v5 " Rasmus Villemoes
2018-03-02 19:49 ` Rob Herring
2018-05-04 8:07 ` Rasmus Villemoes
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