Secumail-id: <15347.63caa0d2.51414.0>
From:   Yann Sionneau <ysionneau@kalray.eu>
To:     Arnd Bergmann <arnd@arndb.de>, Jonathan Corbet <corbet@lwn.net>,
        Thomas Gleixner <tglx@linutronix.de>,
        Marc Zyngier <maz@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Will Deacon <will@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Boqun Feng <boqun.feng@gmail.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Eric Biederman <ebiederm@xmission.com>,
        Kees Cook <keescook@chromium.org>,
        Oleg Nesterov <oleg@redhat.com>,
        Ingo Molnar <mingo@redhat.com>,
        Waiman Long <longman@redhat.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Nick Piggin <npiggin@gmail.com>,
        Paul Moore <paul@paul-moore.com>,
        Eric Paris <eparis@redhat.com>,
        Christian Brauner <brauner@kernel.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Jules Maselbas <jmaselbas@kalray.eu>,
        Yann Sionneau <ysionneau@kalray.eu>,
        Guillaume Thouvenin <gthouvenin@kalray.eu>,
        Clement Leger <clement@clement-leger.fr>,
        Vincent Chardon <vincent.chardon@elsys-design.com>,
        Marc =?utf-8?b?UG91bGhpw6hz?= <dkm@kataplop.net>,
        Julian Vetter <jvetter@kalray.eu>,
        Samuel Jones <sjones@kalray.eu>,
        Ashley Lesdalons <alesdalons@kalray.eu>,
        Thomas Costis <tcostis@kalray.eu>,
        Marius Gligor <mgligor@kalray.eu>,
        Jonathan Borne <jborne@kalray.eu>,
        Julien Villette <jvillette@kalray.eu>,
        Luc Michel <lmichel@kalray.eu>,
        Louis Morhet <lmorhet@kalray.eu>,
        Julien Hascoet <jhascoet@kalray.eu>,
        Jean-Christophe Pince <jcpince@gmail.com>,
        Guillaume Missonnier <gmissonnier@kalray.eu>,
        Alex Michon <amichon@kalray.eu>,
        Huacai Chen <chenhuacai@kernel.org>,
        WANG Xuerui <git@xen0n.name>,
        Shaokun Zhang <zhangshaokun@hisilicon.com>,
        John Garry <john.garry@huawei.com>,
        Guangbin Huang <huangguangbin2@huawei.com>,
        Bharat Bhushan <bbhushan2@marvell.com>,
        Bibo Mao <maobibo@loongson.cn>,
        Atish Patra <atishp@atishpatra.org>,
        "Jason A. Donenfeld" <Jason@zx2c4.com>,
        Qi Liu <liuqi115@huawei.com>,
        Jiaxun Yang <jiaxun.yang@flygoat.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Mark Brown <broonie@kernel.org>,
        Janosch Frank <frankja@linux.ibm.com>,
        Alexey Dobriyan <adobriyan@gmail.com>
Cc:     Benjamin Mugnier <mugnier.benjamin@gmail.com>,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org, linux-mm@kvack.org,
        linux-arch@vger.kernel.org, linux-audit@redhat.com,
        linux-riscv@lists.infradead.org, bpf@vger.kernel.org
Subject: [RFC PATCH v2 03/31] Documentation: Add binding for
 kalray,kv3-1-apic-gic
Date:   Fri, 20 Jan 2023 15:09:34 +0100
Message-ID: <20230120141002.2442-4-ysionneau@kalray.eu>
In-Reply-To: <20230120141002.2442-1-ysionneau@kalray.eu>
References: <20230120141002.2442-1-ysionneau@kalray.eu>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset=utf-8
X-ALTERMIMEV2_out: done
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

From: Jules Maselbas <jmaselbas@kalray.eu>

Add documentation for `kalray,kv3-1-apic-gic` binding.

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

Notes:
    V1 -> V2: new patch

 .../kalray,kv3-1-apic-gic.yaml                | 66 +++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-apic-gic.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-apic-gic.yaml b/Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-apic-gic.yaml
new file mode 100644
index 000000000000..7a37f19db2fb
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-apic-gic.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/kalray,kv3-1-apic-gic#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Kalray kv3-1 APIC-GIC
+
+description: |
+  Each cluster in the Coolidge SoC includes an Advanced Programmable Interrupt
+  Controller (APIC) which is split in two part:
+    - a Generic Interrupt Controller (referred as APIC-GIC)
+    - a Mailbox Controller           (referred as APIC-Mailbox)
+  The APIC-GIC acts as an intermediary interrupt controller, muxing/routing
+  incoming interrupts to output interrupts connected to kvx cores interrupts lines.
+  The 139 possible input interrupt lines are organized as follow:
+     - 128 from the mailbox controller (one it per mailboxes)
+     - 1   from the NoC router
+     - 5   from IOMMUs
+     - 1   from L2 cache DMA job FIFO
+     - 1   from cluster watchdog
+     - 2   for SECC, DECC
+     - 1   from Data NoC
+  The 72 possible output interrupt lines:
+     -  68 : 4 interrupts per cores (17 cores)
+     -  1 for L2 cache controller
+     -  3 extra that are for padding
+
+allOf:
+  - $ref: /schemas/interrupt-controller.yaml#
+
+properties:
+  compatible:
+    const: kalray,kv3-1-apic-gic
+  "#interrupt-cells":
+    const: 1
+    description:
+      The IRQ number.
+  interrupt-controller: true
+  interrupt-parent: true
+  interrupts:
+    maxItems: 4
+    description: |
+     Specifies the interrupt line(s) in the interrupt-parent controller node;
+     valid values depend on the type of parent interrupt controller
+
+required:
+  - compatible
+  - reg
+  - "#interrupt-cells"
+  - interrupt-controller
+  - interrupt-parent
+  - interrupts
+
+examples:
+  - |
+    apic_gic: interrupt-controller@a20000 {
+        compatible = "kalray,kv3-1-apic-gic";
+        reg = <0 0xa20000 0 0x12000>;
+        #interrupt-cells = <1>;
+        interrupt-controller;
+        interrupt-parent = <&intc>;
+        interrups = <4 5 6 7>;
+    };
+
+...
-- 
2.37.2