From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f170.google.com (mail-pg1-f170.google.com [209.85.215.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C36AE1DDC21 for ; Sun, 25 May 2025 08:47:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.170 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748162875; cv=none; b=kIIIq+4/scrzM1bsfTs6SwAPeUyAQYduY3X3Yfw5dFOOfMEzAXM2fTlBR2z0rj6q7AFIUTw+JD/is8eX6PSk0NyM3DCJY8ZjLzo3UcNB1oiLKZffyCQJBsR23eShfHQ8DxcsXaIAYLaZtMWXMM6W1G5Iw05+nwiobRZ3YGqG8uw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748162875; c=relaxed/simple; bh=AfloaQsqNQYLyX5RmcBGspt+Vq12jXRiVwlGREexJFM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XGUeXPa+gtH6B/ZESFh9zXJW80lAkCP3PFeOLTZq5m4ar7z5RDW+FBN4j09rvDrw781e6uVW2e4/3EoXEpK1axMbc2KEnPr06L/ZKMHjCov5xV3H9EqlsuH7Ecte7xFAie5ADIIShi6cUydtJ4KS+deA68+FZOj4yygchkdwACg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com; spf=pass smtp.mailfrom=ventanamicro.com; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b=FPRoSdwJ; arc=none smtp.client-ip=209.85.215.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="FPRoSdwJ" Received: by mail-pg1-f170.google.com with SMTP id 41be03b00d2f7-b0db0b6a677so906768a12.2 for ; Sun, 25 May 2025 01:47:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1748162872; x=1748767672; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=wrq/ed0KxjpyuTfPVgQBHoRGk1JS2/KTrIUQ+VEc4ns=; b=FPRoSdwJ5XmYbM3lteFR72flPqhLCYTPAYGuzqinZYsPoJ5yu0PjkRKf3gVY350CqY oepAhdrteeTJxtYk2aPK4Qc065e7isKL7qIfqpIDEr/JqNXt64Id4JAxGU6UPx+3QqeU m+XbHrV4sL2jLG/G6nL6z03hG/2IoQhdG/YOBJmlC28GI7H5pDGkhMFFNighqgodi+fx puR1GXPjrx82vJVtAoDV4FhRIUPwyygOkOBDESjOtkHo9ZQHdE7FreUJ9QC+wBVp1yTq ZdgUQNrOz3gM/BPRFHSe12JIgVUqMI8MzujYcTgkYoEWPsRruBKaM7Hsgh/Nc9ciyjcL xMPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748162872; x=1748767672; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wrq/ed0KxjpyuTfPVgQBHoRGk1JS2/KTrIUQ+VEc4ns=; b=PLvyIWan4EDwpr/VQN8+Vb/pdTwQWMyxTL0fR8JV6b/3edC8YOyvUmTdBaIEekXnaD 01rJTYzhmBPZ0qXEgOPwoKDWYW6Budo2yHwEg8kPa/2cXC8PVcq/x8ZkKDPpuMeaXNQZ 0QcRP0nIhoP9N5NpKoG0VTn5cZYFFLqkGsPordtdQeUWvSfKaePAibpX9/fFJJB2O6Nb VsFkgFnbS08eERUyDPzuYS6ayXOBdpfUVotr5aPuurGnBPsFhENeGP+0E3BDN142sb0T s9LwRmcmYrBsNeePMZAX287/mU2KCU6TmWbclbgmCDLu8J4U3pcsQQng0Sfrs59E8RhY AP7g== X-Forwarded-Encrypted: i=1; AJvYcCWedT1oj83KK03II7wfqHqtVxGsypp1yHXPt+bxvqn22Smycy+J9kXhit7mV0wmIMfX+JWFVM6ZrO8=@vger.kernel.org X-Gm-Message-State: AOJu0YyYR/Z8EK1U5mW1GCw9Yxuu9z6+lhAIVWNnLrULu6Ee0CP2JCOk X/vwmGe6vZXTjEmLpxEeMeOX1X5nxsADGQFAxMd4qz+OWqwx8XhePvzhynCFXxptaEk= X-Gm-Gg: ASbGncuYcKZQVCQ8kXtHlCKAK4kUH/ZoymWYvanhSaBkBu+qJSjWaQbdrxjI3zGsbao f47l42yC0KJa1ae5zDJV+ssZgTClJnCdIB2DuslnwK7frfa99QhtNNMd9a4nAzaYBxw4Lxkuvms CHzcH9/eLrIOJtL1+x0oebaBe5F3slvgZrwGZ2k1P4PQqD/8mpdPfl6xONGgyHV9x/ViVGZwfTq llHoIZtfLUFfiD3CG6Vk9O6xyYgQncYofIg76oDftWUfOqXiwoOZh2Q86O1NGVDoA1yWkNlha6D MpGINyZuuzinBuQL5rBL50vAuttYEB25pF6dl9Q13zBkUbyomfYDQlllhVCn514kM51GmKbL0/1 +0OtTY/Y9 X-Google-Smtp-Source: AGHT+IHKLRkxyGfdlCk8+5+RKFhUy+GVM25vCTnqPcFz4//nByaA4NGGAXm8aCo5Q9FTRRl96NH+BA== X-Received: by 2002:a05:6a20:2d1f:b0:1ee:e24d:8fe3 with SMTP id adf61e73a8af0-2188c23fd7amr7909301637.10.1748162871787; Sun, 25 May 2025 01:47:51 -0700 (PDT) Received: from localhost.localdomain ([122.171.22.180]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b26eaf6dd83sm15250627a12.18.2025.05.25.01.47.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 25 May 2025 01:47:51 -0700 (PDT) From: Anup Patel To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jassi Brar , Thomas Gleixner , "Rafael J . Wysocki" , Mika Westerberg , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Cc: Palmer Dabbelt , Paul Walmsley , Len Brown , Sunil V L , Rahul Pathak , Leyfoon Tan , Atish Patra , Andrew Jones , Samuel Holland , Anup Patel , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Anup Patel Subject: [PATCH v4 03/23] dt-bindings: mailbox: Add bindings for RISC-V SBI MPXY extension Date: Sun, 25 May 2025 14:16:50 +0530 Message-ID: <20250525084710.1665648-4-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250525084710.1665648-1-apatel@ventanamicro.com> References: <20250525084710.1665648-1-apatel@ventanamicro.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add device tree bindings for the RISC-V SBI Message Proxy (MPXY) extension as a mailbox controller. Signed-off-by: Anup Patel --- .../bindings/mailbox/riscv,sbi-mpxy-mbox.yaml | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/riscv,sbi-mpxy-mbox.yaml diff --git a/Documentation/devicetree/bindings/mailbox/riscv,sbi-mpxy-mbox.yaml b/Documentation/devicetree/bindings/mailbox/riscv,sbi-mpxy-mbox.yaml new file mode 100644 index 000000000000..ad4c135e0510 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/riscv,sbi-mpxy-mbox.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mailbox/riscv,sbi-mpxy-mbox.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: RISC-V SBI Message Proxy (MPXY) extension based mailbox + +maintainers: + - Anup Patel + +description: | + The RISC-V SBI Message Proxy (MPXY) extension [1] allows supervisor + software to send messages through the SBI implementation (M-mode + firmware or HS-mode hypervisor). The underlying message protocol + and message format used by the supervisor software could be some + other standard protocol compatible with the SBI MPXY extension + (such as RISC-V Platform Management Interface (RPMI) [2]). + + =========================================== + References + =========================================== + + [1] RISC-V Supervisor Binary Interface (SBI) + https://github.com/riscv-non-isa/riscv-sbi-doc/releases + + [2] RISC-V Platform Management Interface (RPMI) + https://github.com/riscv-non-isa/riscv-rpmi/releases + +properties: + compatible: + const: riscv,sbi-mpxy-mbox + + "#mbox-cells": + const: 2 + description: + The first cell specifies channel_id of the SBI MPXY channel, + the second cell specifies MSG_PROT_ID of the SBI MPXY channel + +required: + - compatible + - "#mbox-cells" + +additionalProperties: false + +examples: + - | + mailbox { + compatible = "riscv,sbi-mpxy-mbox"; + #mbox-cells = <2>; + }; -- 2.43.0