[PATCH v2 1/3] dt-bindings: riscv: document cbom-block-size

From: Heiko Stuebner <heiko@sntech.de>
To: palmer@dabbelt.com, paul.walmsley@sifive.com
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	wefu@redhat.com, guoren@kernel.org, atishp@atishpatra.org,
	anup@brainfault.org, mick@ics.forth.gr, samuel@sholland.org,
	cmuellner@linux.com, philipp.tomsich@vrull.eu,
	robh+dt@kernel.org, krzk+dt@kernel.org,
	devicetree@vger.kernel.org, Heiko Stuebner <heiko@sntech.de>
Subject: [PATCH v2 1/3] dt-bindings: riscv: document cbom-block-size
Date: Wed, 11 May 2022 23:41:30 +0200	[thread overview]
Message-ID: <20220511214132.2281431-2-heiko@sntech.de> (raw)
In-Reply-To: <20220511214132.2281431-1-heiko@sntech.de>

The Zicbom operates on a block-size defined for the cpu-core,
which does not necessarily match other cache-sizes used.

So add the necessary property for the system to know the core's
block-size.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
 Documentation/devicetree/bindings/riscv/cpus.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
index d632ac76532e..b179bfd155a3 100644
--- a/Documentation/devicetree/bindings/riscv/cpus.yaml
+++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -63,6 +63,13 @@ properties:
       - riscv,sv48
       - riscv,none
 
+  riscv,cbom-block-size:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Blocksize in bytes for the Zicbom cache operations. The block
+      size is a property of the core itself and does not necessarily
+      match other software defined cache sizes.
+
   riscv,isa:
     description:
       Identifies the specific RISC-V instruction set architecture
-- 
2.35.1

