From nobody Thu Oct 9 10:52:50 2025 Received: from mail-pg1-f171.google.com (mail-pg1-f171.google.com [209.85.215.171]) (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 BD9AB2DF3CE for ; Wed, 18 Jun 2025 12:14:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750248875; cv=none; b=XFm4ojdu2u+DzSJQIaPSLVZb2AZG8wFaf1rBl8OXtGgrjoJBCGrOt8VNyHad6ceDTRaeXhIvcRy4khehGPKuoRtbgSHY6+RSWgTNYXHblUzAsGSHO2gPzY0dr/THvyLOnDOn3nDkxz8Qm5kdkSuu4oKQCtUgwZT9PVie6FB79F0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750248875; c=relaxed/simple; bh=wpGteD02sLvwEnKA7TBa2+SX4iYwOSU082ERtl6/Vjc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XcV26fsO5DrIR1CIEmG708ZrPQlszqHCRO6eeNT07CK9qb5NCIoLs1tT9DyZQyUtz5wApr/oQZVZfikwe4WHP1J2mdutq6uLnYVt24CLsRQ3sqhbSBp4d1ZK5EwqFrkZKJSmWADpHdzAwTlbwe4ak5/8L37LvjXz08pL8hu7ouo= 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=m7qAjYLT; arc=none smtp.client-ip=209.85.215.171 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="m7qAjYLT" Received: by mail-pg1-f171.google.com with SMTP id 41be03b00d2f7-b2f62bbb5d6so5534943a12.0 for ; Wed, 18 Jun 2025 05:14:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1750248873; x=1750853673; 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=EGFMyHcY75Un2ey32rj/OGQJrYLrfBUEB3tHZxTx41w=; b=m7qAjYLTh6k29aCxkuSZxb5uMIACvXHfgr+RTjkRgpEHC7ielO7QuwOlyB40+60NFO 4NB3OEZ3eNpFMfOn9LNrSHouyUHbIpmce3uaYEO87rZmISpdUsg7P0iy1ZsYR8fo/I73 BA+WnNxdgGJ7qgrYcHrSZ7WmiPir3p2tLI7twXy1+yuBXTGU/B0RPO1ZUNejDhm72tHy t4vmXAZQ3V9KcXCARnzGxbDVSvHiFbmwTp2kzuhx+vrO7SVu+bPN9h4j2NJybiZca1MI nT9dDHwK5Q/MrnW4oAzmICJlmaOcOM0YjeR9lzwjkMS8TJnzEbBbp2wCSm6XZ+x1gthN T3rA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750248873; x=1750853673; 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=EGFMyHcY75Un2ey32rj/OGQJrYLrfBUEB3tHZxTx41w=; b=emYRQK0uosScT2z8A6ONuIjS1amNTFdvFvt/I8ee/qYmN82yXtZ+BzXoT5B5wRjkSa 8+y1gzDKEyUmydjRtdv/3xmmfVxd6n23mYnQqtjcIPwxfmcuNhzUsSYFSZbCpyUA4xol VIWr48OgFt7tW30KmLXS4dUYTOsJd4XDgCCWVBE3eWcwXwXFZUQigg0J0cp11JxcNcU6 OhavfWDPuyLiXCjo6RcfOPm2NxI3zUgQaC0AFhn6VYV1dTheRmwkfIaChoywqxzvE8vj 7oALZ1kCbcfRVvu7CccoSi1fCQ4MCDnHQnhTnoXYZCo0viRDveCyM0A73yQOchpboAaz 2d9w== X-Forwarded-Encrypted: i=1; AJvYcCU91FCKE952Zwcmqe8q9gC/gM25H2qGcg9Th5p8Vajy3Shdo6In6pxikLqrRNOwsgE7Wkv6HoYZbL2JPNA=@vger.kernel.org X-Gm-Message-State: AOJu0YzaRuOhioVHXddaBGq3+CB2RubzGH7ViFjitOksd5279XB6vVdI 6G16OYtGnH8PnO0L+z/yHszu1m1Jrj37/C/bpt5mFzf0Q652QQX/vrecY7AEXCvairoD1C7V974 srm1Q X-Gm-Gg: ASbGnctoy+E0A++xAGuLRCyHHBPkSTUOE0zrbosveFBcHyq9hl3bGneJLXxD2RYFbI8 4J+mM4WAuxs7Nb/+R+eFTwB9PeVSotpUh2g7MXCgOMwUOQo5htkU/n8W9Q0d7gX2IuwUsqcVsDM 9IHGo9tF0OIPLlfDyfjbI6k4AwKo2JFDbLWVkts0omnrXP0nHYg6WqX1j65Ii+KgXHxNp6m40xq 4MLGXy2A9w6r6gsF4Zn/dGye2lQ63FlzZda1YdZLqteTTq/JRWa+vNp0kK5FMck7/toIw402zRQ /8IoOZkH7X2jptPh1Mg5dChx3VrO8RdORoYGncVztyUQgfPqvZZssDSUNQL7Ib8JcF5tXcG8Sa8 1tN6/gHzndin5oLHbnQ== X-Google-Smtp-Source: AGHT+IH19wLzq9wlb/kctuWR26QQIpePLbUfQ1snatAUiGKbTDh1UHVaygrkai5UEeU6wLpNf8lJYQ== X-Received: by 2002:a05:6a21:648b:b0:21f:53e4:1925 with SMTP id adf61e73a8af0-21fbd523a1dmr22715391637.10.1750248872883; Wed, 18 Jun 2025 05:14:32 -0700 (PDT) Received: from localhost.localdomain ([122.171.23.44]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-748900d7e0asm11201177b3a.174.2025.06.18.05.14.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Jun 2025 05:14:32 -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 , Conor Dooley Subject: [PATCH v6 02/23] dt-bindings: mailbox: Add bindings for RISC-V SBI MPXY extension Date: Wed, 18 Jun 2025 17:43:37 +0530 Message-ID: <20250618121358.503781-3-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250618121358.503781-1-apatel@ventanamicro.com> References: <20250618121358.503781-1-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: quoted-printable Content-Type: text/plain; charset="utf-8" Add device tree bindings for the RISC-V SBI Message Proxy (MPXY) extension as a mailbox controller. Reviewed-by: Conor Dooley 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-mpx= y-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..061437a0b45a --- /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]). + + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + References + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + + [1] RISC-V Supervisor Binary Interface (SBI) v3.0 (or higher) + https://github.com/riscv-non-isa/riscv-sbi-doc/releases + + [2] RISC-V Platform Management Interface (RPMI) v1.0 (or higher) + 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 =3D "riscv,sbi-mpxy-mbox"; + #mbox-cells =3D <2>; + }; --=20 2.43.0