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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, cmuellner@linux.com,
	philipp.tomsich@vrull.eu, hch@lst.de, samuel@sholland.org,
	atishp@atishpatra.org, anup@brainfault.org, mick@ics.forth.gr,
	robh+dt@kernel.org, krzk+dt@kernel.org,
	devicetree@vger.kernel.org, drew@beagleboard.org,
	rdunlap@infradead.org, Heiko Stuebner <heiko@sntech.de>,
	Rob Herring <robh@kernel.org>
Subject: [PATCH 2/4] dt-bindings: riscv: document cbom-block-size
Date: Sun, 19 Jun 2022 22:32:10 +0200	[thread overview]
Message-ID: <20220619203212.3604485-3-heiko@sntech.de> (raw)
In-Reply-To: <20220619203212.3604485-1-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>
Reviewed-by: Anup Patel <anup@brainfault.org>
Acked-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/riscv/cpus.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
index d632ac76532e..873dd12f6e89 100644
--- a/Documentation/devicetree/bindings/riscv/cpus.yaml
+++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -63,6 +63,11 @@ properties:
       - riscv,sv48
       - riscv,none
 
+  riscv,cbom-block-size:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The blocksize in bytes for the Zicbom cache operations.
+
   riscv,isa:
     description:
       Identifies the specific RISC-V instruction set architecture
-- 
2.35.1


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  parent reply	other threads:[~2022-06-19 20:32 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-19 20:32 [PATCH v4 0/4] riscv: implement Zicbom-based CMO instructions + the t-head variant Heiko Stuebner
2022-06-19 20:32 ` [PATCH 1/4] of: also handle dma-noncoherent in of_dma_is_coherent() Heiko Stuebner
2022-06-20  6:01   ` Christoph Hellwig
2022-06-20 16:33   ` Atish Patra
2022-06-20 18:11     ` Heiko Stuebner
2022-06-20 19:41       ` Atish Patra
2022-06-19 20:32 ` Heiko Stuebner [this message]
2022-06-19 20:32 ` [PATCH 3/4] riscv: Implement Zicbom-based cache management operations Heiko Stuebner
2022-06-20  6:16   ` Christoph Hellwig
2022-06-24  7:49     ` Heiko Stuebner
2022-06-19 20:32 ` [PATCH 4/4] riscv: implement cache-management errata for T-Head SoCs Heiko Stuebner
2022-06-29  1:29   ` Samuel Holland

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