From: Prabhakar <prabhakar.csengg@gmail.com>
To: Arnd Bergmann <arnd@arndb.de>,
Conor Dooley <conor.dooley@microchip.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Heiko Stuebner <heiko@sntech.de>, Guo Ren <guoren@kernel.org>,
Andrew Jones <ajones@ventanamicro.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Samuel Holland <samuel@sholland.org>,
linux-riscv@lists.infradead.org
Cc: Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-renesas-soc@vger.kernel.org,
Prabhakar <prabhakar.csengg@gmail.com>,
Biju Das <biju.das.jz@bp.renesas.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
Rob Herring <robh@kernel.org>
Subject: [PATCH v7 4/6] dt-bindings: cache: r9a07g043f-l2-cache: Add DT binding documentation for L2 cache controller
Date: Thu, 30 Mar 2023 21:42:15 +0100 [thread overview]
Message-ID: <20230330204217.47666-5-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw)
In-Reply-To: <20230330204217.47666-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
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 <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
---
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 <prabhakar.mahadev-lad.rj@bp.renesas.com>
+
+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 <dt-bindings/interrupt-controller/irq.h>
+
+ 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;
+ };
--
2.25.1
next prev parent reply other threads:[~2023-03-30 20:43 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-30 20:42 [PATCH v7 0/6] RISC-V non-coherent function pointer based CMO + non-coherent DMA support for AX45MP Prabhakar
2023-03-30 20:42 ` [PATCH v7 1/6] riscv: mm: dma-noncoherent: Switch using function pointers for cache management Prabhakar
2023-03-30 21:34 ` Arnd Bergmann
2023-03-31 7:54 ` Conor Dooley
2023-03-31 7:58 ` Arnd Bergmann
2023-03-31 10:37 ` Lad, Prabhakar
2023-03-31 10:44 ` Arnd Bergmann
2023-03-31 12:11 ` Lad, Prabhakar
2023-04-03 17:00 ` Lad, Prabhakar
2023-03-31 10:55 ` Conor Dooley
2023-03-31 11:36 ` Arnd Bergmann
2023-03-31 7:31 ` Geert Uytterhoeven
2023-03-31 10:45 ` Lad, Prabhakar
2023-03-31 12:24 ` Conor Dooley
2023-04-03 18:23 ` Lad, Prabhakar
2023-04-03 18:31 ` Conor Dooley
2023-04-04 5:29 ` Christoph Hellwig
2023-04-04 6:24 ` Biju Das
2023-04-04 15:42 ` Christoph Hellwig
2023-04-05 6:08 ` Biju Das
2023-04-07 0:03 ` Andrea Parri
2023-04-07 5:33 ` Christoph Hellwig
2023-04-04 6:50 ` Arnd Bergmann
2023-04-04 6:59 ` Conor Dooley
2023-04-06 18:59 ` Lad, Prabhakar
2023-03-30 20:42 ` [PATCH v7 2/6] riscv: asm: vendorid_list: Add Andes Technology to the vendors list Prabhakar
2023-03-30 20:42 ` [PATCH v7 3/6] riscv: errata: Add Andes alternative ports Prabhakar
2023-03-30 20:42 ` Prabhakar [this message]
2023-03-31 10:21 ` [PATCH v7 4/6] dt-bindings: cache: r9a07g043f-l2-cache: Add DT binding documentation for L2 cache controller Conor Dooley
2023-03-31 10:47 ` Lad, Prabhakar
2023-03-30 20:42 ` [PATCH v7 5/6] cache: Add L2 cache management for Andes AX45MP RISC-V core Prabhakar
2023-03-31 12:45 ` Conor Dooley
2023-03-31 20:17 ` Lad, Prabhakar
2023-03-30 20:42 ` [PATCH v7 6/6] soc: renesas: Kconfig: Select the required configs for RZ/Five SoC Prabhakar
2023-03-31 7:37 ` Geert Uytterhoeven
2023-03-31 7:37 ` Geert Uytterhoeven
2023-03-31 18:05 ` [PATCH v7 0/6] RISC-V non-coherent function pointer based CMO + non-coherent DMA support for AX45MP Conor Dooley
2023-03-31 20:09 ` Lad, Prabhakar
2023-03-31 20:15 ` Conor Dooley
2023-04-01 1:47 ` Icenowy Zheng
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