From patchwork Thu Nov 24 17:22:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lad, Prabhakar" X-Patchwork-Id: 13055215 X-Patchwork-Delegate: geert@linux-m68k.org 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 33F7AC4321E for ; Thu, 24 Nov 2022 17:23:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229653AbiKXRXA (ORCPT ); Thu, 24 Nov 2022 12:23:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229812AbiKXRWu (ORCPT ); Thu, 24 Nov 2022 12:22:50 -0500 Received: from mail-wm1-x335.google.com (mail-wm1-x335.google.com [IPv6:2a00:1450:4864:20::335]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 16BA71740C; Thu, 24 Nov 2022 09:22:48 -0800 (PST) Received: by mail-wm1-x335.google.com with SMTP id v7so1775941wmn.0; Thu, 24 Nov 2022 09:22:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; 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=6pVq/7Up2ay5U3igFGOv4evJBykOn5gce8qJ7iJVARg=; b=VkDha0/y1YroAoUc12D0j4O8KV1nd0kU2H6cs0j6bnou9/NzJ5M8TOk/BeWgCMudeH Jn2ChNGVTcQUXWao9Mlm6D+Yvuo7XSUuttSixS58iqpf1SJ0gARfYzmAkEWRGLUrW57k V72ywOMPN0+0t6X9epAS8KXtOiwKdGV1FA9RCfg2Grmawoa7bV3aitwDQP2hFYMp84hk VUtvKnten+3jTgK3kMWhI6e3kxa14k+BK4Nq4ioMdSmhamLEgeASv+o00GexKVfLIWIr LL4B11Yl4PvJnZyCUE6Hw+RlJr9aBa3xEeBkOoTyB7GVXEjubBiVUYeed7+wh7QIGJrY JjJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=6pVq/7Up2ay5U3igFGOv4evJBykOn5gce8qJ7iJVARg=; b=QmkIUDlTzvpVUjUCJVv9RKr0LOcgQSuFASK0Xw3JpKCykWNTPtSxSgqTXGYp/+/gin ZYqEhm8KI0lB2CNxnywRpZ1qjx5w+5J4/3YySvBm9YH9t1+/HyXwK2fPYiJ88JQiI2+5 mwM78HIM7HWqh9JTCf879r4Uw68wI5IEqMsRJmvhU8bt7kN5NYsbhSuDd/3B+cKZi5J4 /3YFs6tjmOz8KUH8m1Fd+DyQjsuImDtMyGTHR20IAcAd0xQSgFvkRfPJ52uB6ltXIQG0 U4Sg0J0teUusDS4nZTTbq2EVaLM3PfjDJItFKfyZ204iA7eN5pm9V+FTFeq6AlWs6dFQ 2OZg== X-Gm-Message-State: ANoB5pkbyjoTvQx3Ye+u8bCrRwi9c5xQwMFRQaxJZMhnLTTh78OTN1gO 1aipWvNxquTJPSwNUTpR8so= X-Google-Smtp-Source: AA0mqf44h28x8D3Kz4FZq8tJ6Tjsx+IjiDmKprEJ7QCdnZzDVqibUn3iDgIcixYS2XyhHS0NCgTh3A== X-Received: by 2002:a7b:cc85:0:b0:3bf:d1e2:1d9 with SMTP id p5-20020a7bcc85000000b003bfd1e201d9mr17967480wma.115.1669310566585; Thu, 24 Nov 2022 09:22:46 -0800 (PST) Received: from prasmi.home ([2a00:23c8:2501:c701:89ee:3f5d:1c99:35d8]) by smtp.gmail.com with ESMTPSA id v17-20020a05600c445100b003c64c186206sm2698086wmn.16.2022.11.24.09.22.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Nov 2022 09:22:45 -0800 (PST) From: Prabhakar X-Google-Original-From: Prabhakar To: Paul Walmsley , Palmer Dabbelt , Albert Ou , Geert Uytterhoeven , Magnus Damm , Heiko Stuebner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Guo Ren Cc: Jisheng Zhang , Atish Patra , Anup Patel , Andrew Jones , Nathan Chancellor , Philipp Tomsich , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [PATCH v4 6/7] dt-bindings: cache: r9a07g043f-l2-cache: Add DT binding documentation for L2 cache controller Date: Thu, 24 Nov 2022 17:22:06 +0000 Message-Id: <20221124172207.153718-7-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221124172207.153718-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20221124172207.153718-1-prabhakar.mahadev-lad.rj@bp.renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@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 --- RFC v3 -> v4 * Dropped l2 cache configuration parameters * s/larger/large * Added minItems/maxItems for andestech,pma-regions --- .../cache/andestech,ax45mp-cache.yaml | 93 +++++++++++++++++++ .../cache/andestech,ax45mp-cache.h | 38 ++++++++ 2 files changed, 131 insertions(+) create mode 100644 Documentation/devicetree/bindings/cache/andestech,ax45mp-cache.yaml create mode 100644 include/dt-bindings/cache/andestech,ax45mp-cache.h 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..bf255b177d0a --- /dev/null +++ b/Documentation/devicetree/bindings/cache/andestech,ax45mp-cache.yaml @@ -0,0 +1,93 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright (C) 2022 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 + + andestech,pma-regions: + $ref: /schemas/types.yaml#/definitions/uint32-matrix + minItems: 1 + maxItems: 16 + items: + minItems: 3 + maxItems: 3 + description: Optional array of memory regions to be set in the PMA. + +additionalProperties: false + +required: + - compatible + - cache-line-size + - cache-level + - cache-sets + - cache-size + - cache-unified + - interrupts + - reg + +examples: + - | + #include + #include + + cache-controller@2010000 { + reg = <0x13400000 0x100000>; + compatible = "andestech,ax45mp-cache", "cache"; + interrupts = <508 IRQ_TYPE_LEVEL_HIGH>; + cache-line-size = <64>; + cache-level = <2>; + cache-sets = <1024>; + cache-size = <262144>; + cache-unified; + andestech,pma-regions = <0x58000000 0x08000000 + (AX45MP_PMACFG_ETYP_NAPOT | AX45MP_PMACFG_MTYP_MEM_NON_CACHE_BUF)>; + }; diff --git a/include/dt-bindings/cache/andestech,ax45mp-cache.h b/include/dt-bindings/cache/andestech,ax45mp-cache.h new file mode 100644 index 000000000000..aa1cad24075d --- /dev/null +++ b/include/dt-bindings/cache/andestech,ax45mp-cache.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * This header provides constants for Andes AX45MP PMA configuration + * + * Copyright (C) 2022 Renesas Electronics Corp. + */ + +#ifndef __DT_BINDINGS_ANDESTECH_AX45MP_CACHE_H +#define __DT_BINDINGS_ANDESTECH_AX45MP_CACHE_H + +/* OFF: PMA entry is disabled */ +#define AX45MP_PMACFG_ETYP_DISABLED 0 +/* Naturally aligned power of 2 region */ +#define AX45MP_PMACFG_ETYP_NAPOT 3 + +/* Device, Non-bufferable */ +#define AX45MP_PMACFG_MTYP_DEV_NON_BUF (0 << 2) +/* Device, bufferable */ +#define AX45MP_PMACFG_MTYP_DEV_BUF (1 << 2) +/* Memory, Non-cacheable, Non-bufferable */ +#define AX45MP_PMACFG_MTYP_MEM_NON_CACHE_NON_BUF (2 << 2) +/* Memory, Non-cacheable, Bufferable */ +#define AX45MP_PMACFG_MTYP_MEM_NON_CACHE_BUF (3 << 2) +/* Memory, Write-back, No-allocate */ +#define AX45MP_PMACFG_MTYP_MEM_WB_NA (8 << 2) +/* Memory, Write-back, Read-allocate */ +#define AX45MP_PMACFG_MTYP_MEM_WB_RA (9 << 2) +/* Memory, Write-back, Write-allocate */ +#define AX45MP_PMACFG_MTYP_MEM_WB_WA (10 << 2) +/* Memory, Write-back, Read and Write-allocate */ +#define AX45MP_PMACFG_MTYP_MEM_WB_R_WA (11 << 2) + +/* AMO instructions are supported */ +#define AX45MP_PMACFG_NAMO_AMO_SUPPORT (0 << 6) +/* AMO instructions are not supported */ +#define AX45MP_PMACFG_NAMO_AMO_NO_SUPPORT (1 << 6) + +#endif /* __DT_BINDINGS_ANDESTECH_AX45MP_CACHE_H */