From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f180.google.com (mail-pl1-f180.google.com [209.85.214.180]) (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 9C31D20101E for ; Mon, 16 Dec 2024 08:48:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734338934; cv=none; b=GlxUgYwCupTTSs8Ru/1K3V4zm2BN1H7Urpu9XdHzUzA1MgbebJZG/tgbA/uJCl+TNgkVMEKoYx4kubFkNmJ6WM65zC/J03qY+qJRGndeayT2Ct9HHJd3AdsNAmXm+/i4cdEuHLCk3ZitusJHQ2kRls880xfV6vT5k2HHAHCfhJM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734338934; c=relaxed/simple; bh=QiMGpDjHJVbEJ7WtU+aAmU5WmhVGH1iQ/fXC0sMtGgc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SxiTfntPsYuCv9xJX0VTR40hu0/LrzCD/EFZeldu57Y2dHYnM+5kGMtWhI4GphIuV630ME0lsJLn8+cL1XTqEhLWoYZ/dUzJdoVtgTsix4WmyYeeIGgJc8uj+Jx+uD1PRAV7LeIC5HfMnHde79YzRDd4heW5+eQq+g29xbnqfUs= 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=ESGcP4dJ; arc=none smtp.client-ip=209.85.214.180 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="ESGcP4dJ" Received: by mail-pl1-f180.google.com with SMTP id d9443c01a7336-2156e078563so28460045ad.2 for ; Mon, 16 Dec 2024 00:48:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1734338931; x=1734943731; 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=ssg9a8o6gZjpZvchZzGUt0Qt044T+B0HdxLRYjAYuuA=; b=ESGcP4dJXv3ZI0kvKH/rncqICV+ot2WKiFJBT+t+y/HmIcp//K2MPOdIZvz+IjDkH9 nPx6L7Xx6lFMTx3k58DOwfhDu5ib17GRZ+6wj5sJZYybRmC4Upmt8sGIBucwjkQi94rO rbuTRKL/XRkHhMPkIzK3wLJQamMISdZteztPjWci1l9TegAk4cGYIYFm1wa5PcfDST0l XkOej55cTgV3lLiZbd8H6VZPCOKH9F0cxDAokgiPhmm8g1wTtbR4biv2V4QSC5hxwpza QcG7PBycoL6Y+tJ5IIZz9fFhYbtYkbrK2RN5osqwOqDt9yJ+IYCoaCY9lLjzs4uZzwRI xN9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734338931; x=1734943731; 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=ssg9a8o6gZjpZvchZzGUt0Qt044T+B0HdxLRYjAYuuA=; b=RpKowARq8+BBtoviFiaUdev1bRvnTo8tQgMa7tQlyrKUwzUp0l2f3/P80uxFpQfwz2 P0JUxHknmOcEXxEltisuwB0z0SMO3rhSHIiPgwN4xGh478crdQs6Yl6zjQLtR7JKE472 LS5RFhd3ee8IEfxmWynJ3mjsX5ihVK63Cm3ZDbuZi/2+zIyj0XZwrDUtJRUbqbSGzhdM eR1sdcJdH/eD3zBSu5/KD1uU93F8AcwduSAcOul9drz49gnwKJH+qXzncoD4uSQ7z2R4 raaBpj9PZR8rZILgrOiP+CoiKK8E884vH3qn5Unj61oeFImW90GifWdVueT3kIIRwpSD wfuw== X-Forwarded-Encrypted: i=1; AJvYcCV/8/oR99+PY+/7EmMfnk3JUVAszeKxvhfcfn+lbRoK5zYaQTsvPz3qqjRcrIzjsf4HY+iVnzH3gzHg+ac=@vger.kernel.org X-Gm-Message-State: AOJu0Yx4F3Hgdl+WzRxohW6V+smG8vFuWyysxca3jcp0AcNUwWHPkk/J BSHpWg2jSZoEkQKdIgFw6wIVHdEgFVvbygGsGBox553GWogkEDvwPMfBB9A6vUM= X-Gm-Gg: ASbGncvMulU4f/h2KfaJtnAe4epuRhTZ/xAfxGbAol51xTdJsURt16eOpDZl13IkWlc YalTRD6ihVLPaHv5dVTgpoz7NQtpcAm7XDxeJVJkF+GnveolJuwHQHnnwKMJj+jNkiSa12LWsA7 Rhj6RZmvAVFut0DGnJYoNTS0v49Ku58EFA+/4tcJZTzQzDFaIEJpVrdSgywUCMh3wQMBpO2Aqic RlTzV/q6RSgma8kdlOw+q3diAtWk+j9RkWf9xhFvaKw0MeslzgyfwULTq90elbUxiduxfR0Mwal 8yJiRfPWXZh72l0= X-Google-Smtp-Source: AGHT+IEjkG82UTaLNxVZ0a1jk6JfxX7g2yNmmqLUOhK1uOCG12kx8FsqZmcvvvLQulkpsVPnYWSQaw== X-Received: by 2002:a17:902:ec89:b0:216:770e:f46 with SMTP id d9443c01a7336-21892a74611mr174024415ad.54.1734338930854; Mon, 16 Dec 2024 00:48:50 -0800 (PST) Received: from localhost.localdomain ([223.185.130.105]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-218a1e501d0sm37711495ad.116.2024.12.16.00.48.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Dec 2024 00:48:50 -0800 (PST) From: Anup Patel To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jassi Brar Cc: Palmer Dabbelt , Paul Walmsley , Sunil V L , Rahul Pathak , Leyfoon Tan , Atish Patra , Andrew Jones , Anup Patel , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Anup Patel Subject: [RFC PATCH 3/8] dt-bindings: mailbox: Add bindings for RISC-V SBI MPXY extension Date: Mon, 16 Dec 2024 14:18:12 +0530 Message-ID: <20241216084817.373131-4-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241216084817.373131-1-apatel@ventanamicro.com> References: <20241216084817.373131-1-apatel@ventanamicro.com> Precedence: bulk X-Mailing-List: linux-kernel@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 | 54 +++++++++++++++++++ 1 file changed, 54 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..8a05e089b710 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/riscv,sbi-mpxy-mbox.yaml @@ -0,0 +1,54 @@ +# 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: + $nodename: + const: sbi-mpxy-mbox + + 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: + - | + sbi-mpxy-mbox { + compatible = "riscv,sbi-mpxy-mbox"; + #mbox-cells = <2>; + }; -- 2.43.0