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Message-Id: <1600793288-3881-2-git-send-email-sagar.kadam@sifive.com>
Date: Tue, 22 Sep 2020 22:18:08 +0530
From: Sagar Kadam <sagar.kadam@...ive.com>
To: linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
devicetree@...r.kernel.org
Cc: robh+dt@...nel.org, paul.walmsley@...ive.com, palmer@...belt.com,
aou@...s.berkeley.edu, yash.shah@...ive.com,
Sagar Kadam <sagar.kadam@...ive.com>
Subject: [PATCH v3 1/1] dt-bindings: riscv: sifive-l2-cache: convert bindings to json-schema
Convert the device tree bindings for the SiFive's FU540-C000 SoC's L2 Cache
controller to YAML format.
Signed-off-by: Sagar Kadam <sagar.kadam@...ive.com>
---
.../devicetree/bindings/riscv/sifive-l2-cache.txt | 51 ------------
.../devicetree/bindings/riscv/sifive-l2-cache.yaml | 90 ++++++++++++++++++++++
2 files changed, 90 insertions(+), 51 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt
create mode 100644 Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
diff --git a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt b/Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt
deleted file mode 100644
index 73d8f19..0000000
--- a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt
+++ /dev/null
@@ -1,51 +0,0 @@
-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.
-All the properties in ePAPR/DeviceTree specification applies for this platform
-
-Required Properties:
---------------------
-- compatible: Should be "sifive,fu540-c000-ccache" and "cache"
-
-- cache-block-size: Specifies the block size in bytes of the cache.
- Should be 64
-
-- cache-level: Should be set to 2 for a level 2 cache
-
-- cache-sets: Specifies the number of associativity sets of the cache.
- Should be 1024
-
-- cache-size: Specifies the size in bytes of the cache. Should be 2097152
-
-- cache-unified: Specifies the cache is a unified cache
-
-- interrupts: Must contain 3 entries (DirError, DataError and DataFail signals)
-
-- reg: Physical base address and size of L2 cache controller registers map
-
-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@...0000 {
- compatible = "sifive,fu540-c000-ccache", "cache";
- cache-block-size = <64>;
- cache-level = <2>;
- cache-sets = <1024>;
- cache-size = <2097152>;
- cache-unified;
- interrupt-parent = <&plic0>;
- interrupts = <1 2 3>;
- reg = <0x0 0x2010000 0x0 0x1000>;
- next-level-cache = <&L25 &L40 &L36>;
- memory-region = <&l2_lim>;
- };
diff --git a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml b/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
new file mode 100644
index 0000000..c135dad
--- /dev/null
+++ b/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
@@ -0,0 +1,90 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2020 SiFive, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/riscv/sifive-l2-cache.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive L2 Cache Controller
+
+maintainers:
+ - Sagar Kadam <sagar.kadam@...ive.com>
+ - Yash Shah <yash.shah@...ive.com>
+ - Paul Walmsley <paul.walmsley@...ive.com>
+
+description:
+ 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.
+ All the properties in ePAPR/DeviceTree specification applies for this platform.
+
+allOf:
+ - $ref: /schemas/cache-controller.yaml#
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - sifive,fu540-c000-ccache
+ description: |
+ Should have "sifive,fu540-c000-ccache" and "cache"
+
+ cache-block-size:
+ const: 64
+
+ cache-level:
+ const: 2
+
+ cache-sets:
+ const: 1024
+
+ cache-size:
+ const: 2097152
+
+ cache-unified: true
+
+ interrupts:
+ description: |
+ Must contain entries for DirError, DataError and DataFail signals.
+ minItems: 3
+ maxItems: 3
+
+ reg:
+ maxItems: 1
+
+ next-level-cache: true
+
+ memory-region:
+ description: |
+ The 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.
+
+additionalProperties: false
+
+required:
+ - compatible
+ - cache-block-size
+ - cache-level
+ - cache-sets
+ - cache-size
+ - cache-unified
+ - interrupts
+ - reg
+
+examples:
+ - |
+ cache-controller@...0000 {
+ compatible = "sifive,fu540-c000-ccache";
+ cache-block-size = <64>;
+ cache-level = <2>;
+ cache-sets = <1024>;
+ cache-size = <2097152>;
+ cache-unified;
+ reg = <0x2010000 0x1000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <1>,
+ <2>,
+ <3>;
+ next-level-cache = <&L25>;
+ memory-region = <&l2_lim>;
+ };
--
2.7.4
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