Message-ID: <20230120141002.2442-7-ysionneau@kalray.eu>
Date:   Fri, 20 Jan 2023 15:09:37 +0100
From:   Yann Sionneau <ysionneau@...ray.eu>
To:     Arnd Bergmann <arnd@...db.de>, Jonathan Corbet <corbet@....net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Eric Biederman <ebiederm@...ssion.com>,
        Kees Cook <keescook@...omium.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Ingo Molnar <mingo@...hat.com>,
        Waiman Long <longman@...hat.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nick Piggin <npiggin@...il.com>,
        Paul Moore <paul@...l-moore.com>,
        Eric Paris <eparis@...hat.com>,
        Christian Brauner <brauner@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Jules Maselbas <jmaselbas@...ray.eu>,
        Yann Sionneau <ysionneau@...ray.eu>,
        Guillaume Thouvenin <gthouvenin@...ray.eu>,
        Clement Leger <clement@...ment-leger.fr>,
        Vincent Chardon <vincent.chardon@...ys-design.com>,
        Marc Poulhiès <dkm@...aplop.net>,
        Julian Vetter <jvetter@...ray.eu>,
        Samuel Jones <sjones@...ray.eu>,
        Ashley Lesdalons <alesdalons@...ray.eu>,
        Thomas Costis <tcostis@...ray.eu>,
        Marius Gligor <mgligor@...ray.eu>,
        Jonathan Borne <jborne@...ray.eu>,
        Julien Villette <jvillette@...ray.eu>,
        Luc Michel <lmichel@...ray.eu>,
        Louis Morhet <lmorhet@...ray.eu>,
        Julien Hascoet <jhascoet@...ray.eu>,
        Jean-Christophe Pince <jcpince@...il.com>,
        Guillaume Missonnier <gmissonnier@...ray.eu>,
        Alex Michon <amichon@...ray.eu>,
        Huacai Chen <chenhuacai@...nel.org>,
        WANG Xuerui <git@...0n.name>,
        Shaokun Zhang <zhangshaokun@...ilicon.com>,
        John Garry <john.garry@...wei.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Bharat Bhushan <bbhushan2@...vell.com>,
        Bibo Mao <maobibo@...ngson.cn>,
        Atish Patra <atishp@...shpatra.org>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Qi Liu <liuqi115@...wei.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Brown <broonie@...nel.org>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Alexey Dobriyan <adobriyan@...il.com>
Cc:     Benjamin Mugnier <mugnier.benjamin@...il.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-mm@...ck.org,
        linux-arch@...r.kernel.org, linux-audit@...hat.com,
        linux-riscv@...ts.infradead.org, bpf@...r.kernel.org
Subject: [RFC PATCH v2 06/31] Documentation: Add binding for
 kalray,kv3-1-ipi-ctrl

From: Jules Maselbas <jmaselbas@...ray.eu>

Add documentation for `kalray,kv3-1-ipi-ctrl` binding.

Co-developed-by: Jules Maselbas <jmaselbas@...ray.eu>
Signed-off-by: Jules Maselbas <jmaselbas@...ray.eu>
Signed-off-by: Yann Sionneau <ysionneau@...ray.eu>
---

Notes:
    V1 -> V2: new patch

 .../kalray/kalray,kv3-1-ipi-ctrl.yaml         | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/kalray/kalray,kv3-1-ipi-ctrl.yaml

diff --git a/Documentation/devicetree/bindings/kalray/kalray,kv3-1-ipi-ctrl.yaml b/Documentation/devicetree/bindings/kalray/kalray,kv3-1-ipi-ctrl.yaml
new file mode 100644
index 000000000000..dc8026b12905
--- /dev/null
+++ b/Documentation/devicetree/bindings/kalray/kalray,kv3-1-ipi-ctrl.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/kalray/kalray,kv3-1-ipi-ctrl#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Kalray kv3-1 Inter-Processor Interrupt Controller (IPI)
+
+description: |
+  The Inter-Processor Interrupt Controller (IPI) provides a fast synchronization
+  mechanism to the software. It exposes eight independent set of registers that
+  can be use to notify each processor in the cluster.
+  A set of registers contains two 32-bit registers:
+    - 17-bit interrupt control, one bit per core, raise an interrupt on write
+    - 17-bit mask, one per core, to enable interrupts
+
+  Bit at offsets 0 to 15 selects cores in the cluster, respectively PE0 to PE15,
+  while bit at offset 16 is for the cluster Resource Manager (RM) core.
+
+  The eight output interrupts are connected to each processor core interrupt
+  controller (intc).
+
+properties:
+  compatible:
+    const: kalray,kv3-1-ipi-ctrl
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupt-parent
+  - interrupts
+
+examples:
+  - |
+    ipi: inter-processor-interrupt@...000 {
+        compatible = "kalray,kv3-1-ipi-ctrl";
+        reg = <0x00 0xad0000 0x00 0x1000>;
+        interrupt-parent = <&intc>;
+        interrupts = <24>;
+    };
+
+...
-- 
2.37.2

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