From: Lokesh Vutla <lokeshvutla@ti.com>
To: Marc Zyngier <marc.zyngier@arm.com>,
Tony Lindgren <tony@atomide.com>, Nishanth Menon <nm@ti.com>,
Santosh Shilimkar <ssantosh@kernel.org>,
Rob Herring <robh+dt@kernel.org>, <jason@lakedaemon.net>
Cc: Linux ARM Mailing List <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Device Tree Mailing List <devicetree@vger.kernel.org>,
Sekhar Nori <nsekhar@ti.com>, Tero Kristo <t-kristo@ti.com>,
Peter Ujfalusi <peter.ujfalusi@ti.com>,
Grygorii Strashko <grygorii.strashko@ti.com>,
Lokesh Vutla <lokeshvutla@ti.com>
Subject: [PATCH v6 08/12] dt-bindings: irqchip: Introduce TISCI Interrupt Aggregator bindings
Date: Wed, 10 Apr 2019 09:43:54 +0530 [thread overview]
Message-ID: <20190410041358.16809-9-lokeshvutla@ti.com> (raw)
In-Reply-To: <20190410041358.16809-1-lokeshvutla@ti.com>
Add the DT binding documentation for Interrupt Aggregator driver.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
---
Changes since v5:
- Dropped interrupt-cells property
- Added msi controller property
.../interrupt-controller/ti,sci-inta.txt | 66 +++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 67 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.txt
diff --git a/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.txt b/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.txt
new file mode 100644
index 000000000000..0c2cee3be45f
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.txt
@@ -0,0 +1,66 @@
+Texas Instruments K3 Interrupt Aggregator
+=========================================
+
+The Interrupt Aggregator (INTA) provides a centralized machine
+which handles the termination of system events to that they can
+be coherently processed by the host(s) in the system. A maximum
+of 64 events can be mapped to a single interrupt.
+
+
+ Interrupt Aggregator
+ +-----------------------------------------+
+ | Intmap VINT |
+ | +--------------+ +------------+ |
+ m ------>| | vint | bit | | 0 |.....|63| vint0 |
+ . | +--------------+ +------------+ | +------+
+ . | . . | | HOST |
+Globalevents ------>| . . |------>| IRQ |
+ . | . . | | CTRL |
+ . | . . | +------+
+ n ------>| +--------------+ +------------+ |
+ | | vint | bit | | 0 |.....|63| vintx |
+ | +--------------+ +------------+ |
+ | |
+ +-----------------------------------------+
+
+Configuration of these Intmap registers that maps global events to vint is done
+by a system controller (like the Device Memory and Security Controller on K3
+AM654 SoC). Driver should request the system controller to get the range
+of global events and vints assigned to the requesting host. Management
+of these requested resources should be handled by driver and requests
+system controller to map specific global event to vint, bit pair.
+
+Communication between the host processor running an OS and the system
+controller happens through a protocol called TI System Control Interface
+(TISCI protocol). For more details refer:
+Documentation/devicetree/bindings/arm/keystone/ti,sci.txt
+
+TISCI Interrupt Aggregator Node:
+-------------------------------
+- compatible: Must be "ti,sci-inta".
+- reg: Should contain registers location and length.
+- interrupt-controller: Identifies the node as an interrupt controller
+- msi-controller: Identifies the node as an MSI controller.
+- interrupt-parent: phandle of irq parent.
+- ti,sci: Phandle to TI-SCI compatible System controller node.
+- ti,sci-dev-id: TISCI device ID of the Interrupt Aggregator.
+- ti,sci-rm-range-vint: TISCI subtype ids representing the virtual interrupts
+ (vints) range within this IA, assigned to the
+ requesting host context.
+- ti,sci-rm-range-global-event: TISCI subtype ids representing the global
+ events range reaching this IA and are assigned
+ to the requesting host context.
+
+Example:
+--------
+main_udmass_inta: interrupt-controller@33d00000 {
+ compatible = "ti,sci-inta";
+ reg = <0x0 0x33d00000 0x0 0x100000>;
+ interrupt-controller;
+ msi-controller;
+ interrupt-parent = <&main_navss_intr>;
+ ti,sci = <&dmsc>;
+ ti,sci-dev-id = <179>;
+ ti,sci-rm-range-vint = <0x0>;
+ ti,sci-rm-range-global-event = <0x1>;
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index 6f551053627f..90173038f674 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15350,6 +15350,7 @@ F: Documentation/devicetree/bindings/clock/ti,sci-clk.txt
F: drivers/clk/keystone/sci-clk.c
F: drivers/reset/reset-ti-sci.c
F: Documentation/devicetree/bindings/interrupt-controller/ti,sci-intr.txt
+F: Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.txt
F: drivers/irqchip/irq-ti-sci-intr.c
Texas Instruments ASoC drivers
--
2.21.0
next prev parent reply other threads:[~2019-04-10 4:15 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-10 4:13 [PATCH v6 00/12] Add support for TISCI Interrupt controller drivers Lokesh Vutla
2019-04-10 4:13 ` [PATCH v6 01/12] firmware: ti_sci: Add support to get TISCI handle using of_phandle Lokesh Vutla
2019-04-10 4:13 ` [PATCH v6 02/12] firmware: ti_sci: Add support for RM core ops Lokesh Vutla
2019-04-10 4:13 ` [PATCH v6 03/12] firmware: ti_sci: Add support for IRQ management Lokesh Vutla
2019-04-10 4:13 ` [PATCH v6 04/12] firmware: ti_sci: Add RM mapping table for am654 Lokesh Vutla
2019-04-11 14:54 ` Tony Lindgren
2019-04-12 4:08 ` Lokesh Vutla
2019-04-12 15:20 ` Tony Lindgren
2019-04-10 4:13 ` [PATCH v6 05/12] firmware: ti_sci: Add helper apis to manage resources Lokesh Vutla
2019-04-10 4:13 ` [PATCH v6 06/12] dt-bindings: irqchip: Introduce TISCI Interrupt router bindings Lokesh Vutla
2019-04-11 15:00 ` Tony Lindgren
2019-04-12 4:24 ` Lokesh Vutla
2019-04-12 8:42 ` Tero Kristo
2019-04-12 15:33 ` Tony Lindgren
2019-04-10 4:13 ` [PATCH v6 07/12] irqchip: ti-sci-intr: Add support for Interrupt Router driver Lokesh Vutla
2019-04-10 4:13 ` Lokesh Vutla [this message]
2019-04-10 4:13 ` [PATCH v6 09/12] irqchip: ti-sci-inta: Add support for Interrupt Aggregator driver Lokesh Vutla
2019-04-17 11:16 ` Lokesh Vutla
2019-04-17 14:14 ` Marc Zyngier
2019-04-17 16:42 ` Lokesh Vutla
2019-04-10 4:13 ` [PATCH v6 10/12] soc: ti: Add MSI domain bus support for Interrupt Aggregator Lokesh Vutla
2019-04-17 16:34 ` Marc Zyngier
2019-04-17 16:59 ` Lokesh Vutla
2019-04-17 17:06 ` Marc Zyngier
2019-04-17 17:08 ` Lokesh Vutla
2019-04-10 4:13 ` [PATCH v6 11/12] irqchip: ti-sci-inta: Add msi domain support Lokesh Vutla
2019-04-10 4:13 ` [PATCH v6 12/12] soc: ti: am6: Enable interrupt controller driver Lokesh Vutla
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