From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from Atcsqr.andestech.com (60-248-80-70.hinet-ip.hinet.net [60.248.80.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 06707298997 for ; Fri, 11 Jul 2025 13:31:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=60.248.80.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752240695; cv=none; b=nai9IL4MrTgaXROQXlTSv4HBmn5OLmdtdK2jA0wSvyyPGGdFBU9XgfMFdfsb24nZKSfqX9ZZXdf4fzLBTuiVwihPeTnWMwp8SNruRtvWwgKU3voxd0Z1en9hhbYD2+qjHkr41URZDxkRbWk/yhKNnu8ezz8DK992HoBKxHi7Ld0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752240695; c=relaxed/simple; bh=gM3m9gQmTB2jzmhUd+teIX6Iygf3dzcTGIX5li5KFzA=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=iCWPv/NJTdDZwbYBi01B9EipSjSjFzI3pjt2jjyKZAz/3AZDOuf6UMPEUb1P9DpWZ+KFjMSE0P2m+2ZWBcZwGDvqWK46PA16Ctmfx7THUkN1OQYA4R0gInKyvOh8/u3JykiPDs7uUXae0TCSM12g/Tw9XQfwqCgrUYwSJkjbuSc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=andestech.com; spf=pass smtp.mailfrom=andestech.com; arc=none smtp.client-ip=60.248.80.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=andestech.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=andestech.com Received: from mail.andestech.com (ATCPCS31.andestech.com [10.0.1.89]) by Atcsqr.andestech.com with ESMTPS id 56BDUepZ014252 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 11 Jul 2025 21:30:40 +0800 (+08) (envelope-from ben717@andestech.com) Received: from swlinux02.andestech.com (10.0.15.183) by ATCPCS31.andestech.com (10.0.1.89) with Microsoft SMTP Server id 14.3.498.0; Fri, 11 Jul 2025 21:30:40 +0800 From: Ben Zong-You Xie To: CC: , , , , , , , , , , , , , , , , Ben Zong-You Xie , Conor Dooley Subject: [PATCH v2 5/9] dt-bindings: timer: add Andes machine timer Date: Fri, 11 Jul 2025 21:30:21 +0800 Message-ID: <20250711133025.2192404-6-ben717@andestech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250711133025.2192404-1-ben717@andestech.com> References: <20250711133025.2192404-1-ben717@andestech.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 Content-Type: text/plain X-DKIM-Results: atcpcs31.andestech.com; dkim=none; X-DNSRBL: X-SPAM-SOURCE-CHECK: pass X-MAIL:Atcsqr.andestech.com 56BDUepZ014252 Add the DT binding documentation for Andes machine timer. The RISC-V architecture defines a machine timer that provides a real-time counter and generates timer interrupts. Andes machiner timer (PLMT0) is the implementation of the machine timer, and it contains memory-mapped registers (mtime and mtimecmp). This device supports up to 32 cores. Acked-by: Conor Dooley Signed-off-by: Ben Zong-You Xie --- .../bindings/timer/andestech,plmt0.yaml | 53 +++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/andestech,plmt0.yaml diff --git a/Documentation/devicetree/bindings/timer/andestech,plmt0.yaml b/Documentation/devicetree/bindings/timer/andestech,plmt0.yaml new file mode 100644 index 000000000000..90b612096004 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/andestech,plmt0.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/timer/andestech,plmt0.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Andes machine-level timer + +description: + The Andes machine-level timer device (PLMT0) provides machine-level timer + functionality for a set of HARTs on a RISC-V platform. It has a single + fixed-frequency monotonic time counter (MTIME) register and a time compare + register (MTIMECMP) for each HART connected to the PLMT0. A timer interrupt is + generated if MTIME >= MTIMECMP. + +maintainers: + - Ben Zong-You Xie + +properties: + compatible: + items: + - enum: + - andestech,qilai-plmt + - const: andestech,plmt0 + + reg: + maxItems: 1 + + interrupts-extended: + minItems: 1 + maxItems: 32 + description: + Specifies which harts are connected to the PLMT0. Each item must points + to a riscv,cpu-intc node, which has a riscv cpu node as parent. The + PLMT0 supports 1 hart up to 32 harts. + +additionalProperties: false + +required: + - compatible + - reg + - interrupts-extended + +examples: + - | + interrupt-controller@100000 { + compatible = "andestech,qilai-plmt", "andestech,plmt0"; + reg = <0x100000 0x100000>; + interrupts-extended = <&cpu0intc 7>, + <&cpu1intc 7>, + <&cpu2intc 7>, + <&cpu3intc 7>; + }; -- 2.34.1