From patchwork Mon Apr 15 11:40:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yash Shah X-Patchwork-Id: 1085598 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=sifive.com header.i=@sifive.com header.b="ey/A3VHO"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44jRRV01VTz9s5c for ; Mon, 15 Apr 2019 21:41:42 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727261AbfDOLlg (ORCPT ); Mon, 15 Apr 2019 07:41:36 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:44751 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727177AbfDOLlg (ORCPT ); Mon, 15 Apr 2019 07:41:36 -0400 Received: by mail-pg1-f193.google.com with SMTP id i2so8438978pgj.11 for ; Mon, 15 Apr 2019 04:41:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=4x3PZ0m4B0BDc7pgveF+ss1l/Njj30x4kKCYTwJnwrE=; b=ey/A3VHOwfSDofaeIV2lHRKJb5sEANApgl6wL6VPhkVZbyQcd8pcu/1GYYKC0iGTTy /CwZt9tlv4hIIz7j4z+Lp1m/dyo2OrsBJ/h2sGyw0zvlQZBcBjNJbbVaKWnyLhso4kKU 1WZljXYBVzQFJPsLMXwdnOEf3RGZd3U7gdovghAsEoAynTccPBcGN1kIUDJSoOo3pqob mEMEEwE+iekK603dYyBNYLdHShMM+Wiq5/Vi34OPxYkzUqlHdkm7Dt3BwiVcZoc5lEar 4fY2A4e68dXKW4rNUiPgwx8VQRQw669JmsYYnp9WtEtX+aEIRvKNVaGSwmNDwKxQFLrO 6fgg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=4x3PZ0m4B0BDc7pgveF+ss1l/Njj30x4kKCYTwJnwrE=; b=EvmeMFmKj8jawxmGkLD3Gne3DPeQ3I1TMGpt5I0/aQ7VRaxlxHuwgASb2zuqX7cbU4 KkMcilFYywQyqIX1jRRt9p3LLsZenL42KisO/yHyaF6fy6fdphccrwqDlEwGGxD60Qo2 mI7YdSRbiJSu65BMXdTNPUVRlaCStbDFTm4NskS0BBb2ShXDci0ofsyKPqWYI4WjcUvb udi978iYm+qXhMq4p17irMY8t0hbxiyeWw5/ps1sjYGQU9N7a40y0dQDE/PoDvFcN6k7 qRfAPNG+E0hqKleE/Up9OhjG4bhGTun2cQGXi+Om09m6KQG/VQ86Nd9GQ3M7eUEQpiry QzdA== X-Gm-Message-State: APjAAAV3rV23PISq7HSCs7ffdLs67NrpySzEszMVpLKIN3Ue5RFrwE5k s490jCp/127hHBHKJ5I+F/E/Fzvl/6c= X-Google-Smtp-Source: APXvYqyyXuSMV7qYfPCLMYOL8Y/aU7ButgBj5OSBrMwc9kzENvL5nZP2gcOIvgW4uhxOpiyIzvfgNg== X-Received: by 2002:a63:c046:: with SMTP id z6mr65559715pgi.81.1555328495776; Mon, 15 Apr 2019 04:41:35 -0700 (PDT) Received: from buildserver-90.open-silicon.com ([114.143.65.226]) by smtp.googlemail.com with ESMTPSA id l4sm32317273pgh.17.2019.04.15.04.41.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 15 Apr 2019 04:41:35 -0700 (PDT) From: Yash Shah To: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org Cc: robh+dt@kernel.org, mark.rutland@arm.com, palmer@sifive.com, aou@eecs.berkeley.edu, paul.walmsley@sifive.com, bp@alien8.de, mchehab@kernel.org, james.morse@arm.com, sachin.ghadi@sifive.com, Yash Shah Subject: [PATCH 1/3] RISC-V: Add DT documentation for SiFive L2 Cache Controller Date: Mon, 15 Apr 2019 17:10:41 +0530 Message-Id: <1555328443-30874-2-git-send-email-yash.shah@sifive.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1555328443-30874-1-git-send-email-yash.shah@sifive.com> References: <1555328443-30874-1-git-send-email-yash.shah@sifive.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch adds device tree bindings for SiFive FU540 L2 cache controller driver Signed-off-by: Yash Shah --- .../devicetree/bindings/riscv/sifive-l2-cache.txt | 53 ++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt diff --git a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt b/Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt new file mode 100644 index 0000000..15132e2 --- /dev/null +++ b/Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt @@ -0,0 +1,53 @@ +SiFive L2 Cache Controller +-------------------------- +The SiFive Level 2 Cache Controller is used to provide access to fast copies +of memory for masters in a Core Complex. The Level 2 Cache Controller also +acts as directory-based coherency manager. + +Required Properties: +-------------------- +- compatible: Should be "sifive,fu540-c000-ccache" + +- cache-block-size: Specifies the block size in bytes of the cache + +- cache-level: Should be set to 2 for a level 2 cache + +- cache-sets: Specifies the number of associativity sets of the cache + +- cache-size: Specifies the size in bytes of the cache + +- cache-unified: Specifies the cache is a unified cache + +- interrupt-parent: Must be core interrupt controller + +- interrupts: Must contain 3 entries (DirError, DataError and DataFail signals) + +- reg: Physical base address and size of L2 cache controller registers map + +- reg-names: Should be "control" + +Optional Properties: +-------------------- +- next-level-cache: phandle to the next level cache if present. + +- memory-region: reference to the reserved-memory for the L2 Loosely Integrated + Memory region. The reserved memory node should be defined as per the bindings + in reserved-memory.txt + + +Example: + + cache-controller@2010000 { + compatible = "sifive,fu540-c000-ccache"; + cache-block-size = <0x40>; + cache-level = <0x2>; + cache-sets = <0x400>; + cache-size = <0x100000>; + cache-unified; + interrupt-parent = <&plic0>; + interrupts = <1 2 3>; + reg = <0x0 0x2010000 0x0 0x1000>; + reg-names = "control"; + next-level-cache = <&L25 &L40 &L36>; + memory-region = <&l2_lim>; + };