From patchwork Fri Aug 18 13:57:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar X-Patchwork-Id: 714812 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6E06C71159 for ; Fri, 18 Aug 2023 13:58:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377518AbjHRN6R (ORCPT ); Fri, 18 Aug 2023 09:58:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353936AbjHRN5o (ORCPT ); Fri, 18 Aug 2023 09:57:44 -0400 Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 451724205; Fri, 18 Aug 2023 06:57:43 -0700 (PDT) Received: by mail-wm1-x32b.google.com with SMTP id 5b1f17b1804b1-3fe426b8583so9184855e9.2; Fri, 18 Aug 2023 06:57:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1692367062; x=1692971862; 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=/+S6fmChfBsFqwxOcSC7kv0ocWrY5ZFX/CE0Wd0tNK0=; b=rrJrF7ghuXk5RdQfUhKyu6Vsnw6NOQVj4fn+yWaNVbZMKoUUImJytDm2awFHVPuqko KBlbbT7rRi6Bg3Uo+d/h8eDeLl0xsOG6geQa4nFpK7EE6Q4cXrJZ3PRSjgzvSacS7A2g 1AO4I4gv+ER9Nmh+Lz+PBzPB6wqA8CGQHNPtirIhEyJAUGVTpk1/A7ApNfoEx31aIi5y Q4S68RybYjOr9/uu2vmwm+W/Vs249q7dLu32fAIydmIJa11TyqQnihCQAf+/u9sYccqE GZit8ZEbriHTe8oNfE+fhaQrKcazgDMYDTNGoUQp8ykw/ZIXIYsx8osREExgd0rWJUZQ mAsg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692367062; x=1692971862; 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=/+S6fmChfBsFqwxOcSC7kv0ocWrY5ZFX/CE0Wd0tNK0=; b=M3RzqHgJ7kdJpf1g+svIuLgGBXugZJiS9jv77glThXFvYG/vS1gHtap2r4ORkxF2Jj A/EqgVqmcMT/hsVz1UTyCCkADVBPQZttNkoJ8UlQdPWxEIaHpoamsEkcXDX+epD8OOoc 9x5/nkTArfAh9I8f1c6rrU4uHg6tgXd/HtuJf2QZnhnMFNOrE6y8ldauI5E7FV8PI35x Uup4kErnfoE8WTnhjxLIjRqxbI1w54/Wn138rNm8gB7ZwE9ufeR0yDISTGI4iuoNHHWu /NDzkbwBFIROksyUgTt+ZUBxok4Z08curWnwPAjLjIwxepMNUeN2gSzBEUzxXj+56y8a 2p0Q== X-Gm-Message-State: AOJu0YzADit9H/OMubpBo8fLRvW/w1+RA69ik3Qh3KYs4ZxCTJCjVILO jdCtrJdfNOg9CZD3bupErmQ= X-Google-Smtp-Source: AGHT+IFJC7Nyk4IOSIwRLJaUUbEm2y/WNDbWEN6sOwUR2YNbK5+pjxFDUDPp2m0LuXIuQOAORGKKJw== X-Received: by 2002:a7b:c4d1:0:b0:3fb:e643:1225 with SMTP id g17-20020a7bc4d1000000b003fbe6431225mr2334885wmk.13.1692367061752; Fri, 18 Aug 2023 06:57:41 -0700 (PDT) Received: from prasmi.home ([2a00:23c8:2501:c701:4b30:13e8:1d57:42fb]) by smtp.gmail.com with ESMTPSA id s14-20020a05600c044e00b003fa96fe2bd9sm6444055wmb.22.2023.08.18.06.57.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Aug 2023 06:57:41 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Arnd Bergmann , Conor Dooley , Geert Uytterhoeven , Guo Ren , Andrew Jones , Paul Walmsley , Palmer Dabbelt , Albert Ou , Samuel Holland , linux-riscv@lists.infradead.org, Christoph Hellwig , Emil Renner Berthing Cc: Rob Herring , Krzysztof Kozlowski , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar , Rob Herring Subject: [PATCH v12 4/6] dt-bindings: cache: andestech,ax45mp-cache: Add DT binding documentation for L2 cache controller Date: Fri, 18 Aug 2023 14:57:21 +0100 Message-Id: <20230818135723.80612-5-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230818135723.80612-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20230818135723.80612-1-prabhakar.mahadev-lad.rj@bp.renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Lad Prabhakar Add DT binding documentation for L2 cache controller found on RZ/Five SoC. The Renesas RZ/Five microprocessor includes a RISC-V CPU Core (AX45MP Single) from Andes. The AX45MP core has an L2 cache controller, this patch describes the L2 cache block. Signed-off-by: Lad Prabhakar Reviewed-by: Rob Herring Reviewed-by: Conor Dooley Tested-by: Conor Dooley # tyre-kicking on a d1 --- v11 -> v12 * No Change v10 -> v11 * No Change v9 -> v10 * No Change v8 -> v9 * No Change v7 -> v8 * Updated commit header message v6 -> v7 * No Change v5 -> v6 * Included RB tag from Rob v4 -> v5 * Dropped L2 cache configuration properties * Dropped PMA configuration properties * Ordered the required list to match the properties list RFC v3 -> v4 * Dropped l2 cache configuration parameters * s/larger/large * Added minItems/maxItems for andestech,pma-regions --- .../cache/andestech,ax45mp-cache.yaml | 81 +++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 Documentation/devicetree/bindings/cache/andestech,ax45mp-cache.yaml diff --git a/Documentation/devicetree/bindings/cache/andestech,ax45mp-cache.yaml b/Documentation/devicetree/bindings/cache/andestech,ax45mp-cache.yaml new file mode 100644 index 000000000000..9ab5f0c435d4 --- /dev/null +++ b/Documentation/devicetree/bindings/cache/andestech,ax45mp-cache.yaml @@ -0,0 +1,81 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright (C) 2023 Renesas Electronics Corp. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/cache/andestech,ax45mp-cache.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Andestech AX45MP L2 Cache Controller + +maintainers: + - Lad Prabhakar + +description: + A level-2 cache (L2C) is used to improve the system performance by providing + a large amount of cache line entries and reasonable access delays. The L2C + is shared between cores, and a non-inclusive non-exclusive policy is used. + +select: + properties: + compatible: + contains: + enum: + - andestech,ax45mp-cache + + required: + - compatible + +properties: + compatible: + items: + - const: andestech,ax45mp-cache + - const: cache + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + cache-line-size: + const: 64 + + cache-level: + const: 2 + + cache-sets: + const: 1024 + + cache-size: + enum: [131072, 262144, 524288, 1048576, 2097152] + + cache-unified: true + + next-level-cache: true + +additionalProperties: false + +required: + - compatible + - reg + - interrupts + - cache-line-size + - cache-level + - cache-sets + - cache-size + - cache-unified + +examples: + - | + #include + + cache-controller@2010000 { + compatible = "andestech,ax45mp-cache", "cache"; + reg = <0x13400000 0x100000>; + interrupts = <508 IRQ_TYPE_LEVEL_HIGH>; + cache-line-size = <64>; + cache-level = <2>; + cache-sets = <1024>; + cache-size = <262144>; + cache-unified; + };