linux-kernel - [PATCH v2 07/12] riscv: dts: starfive: jh7100: Add ccache DT node

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Message-ID: <20231029042712.520010-8-cristian.ciocaltea@collabora.com>
Date:   Sun, 29 Oct 2023 06:27:07 +0200
From:   Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Samin Guo <samin.guo@...rfivetech.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Richard Cochran <richardcochran@...il.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, kernel@...labora.com
Subject: [PATCH v2 07/12] riscv: dts: starfive: jh7100: Add ccache DT node

Provide a DT node for the SiFive Composable Cache controller found on
the StarFive JH7100 SoC.

Note this is also used to support non-coherent DMA, via the
sifive,cache-ops cache flushing operations.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
---
 arch/riscv/boot/dts/starfive/jh7100.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7100.dtsi b/arch/riscv/boot/dts/starfive/jh7100.dtsi
index 06bb157ce111..a8a5bb00b0d8 100644
--- a/arch/riscv/boot/dts/starfive/jh7100.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7100.dtsi
@@ -32,6 +32,7 @@ U74_0: cpu@0 {
 			i-tlb-sets = <1>;
 			i-tlb-size = <32>;
 			mmu-type = "riscv,sv39";
+			next-level-cache = <&ccache>;
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
 			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
@@ -60,6 +61,7 @@ U74_1: cpu@1 {
 			i-tlb-sets = <1>;
 			i-tlb-size = <32>;
 			mmu-type = "riscv,sv39";
+			next-level-cache = <&ccache>;
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
 			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
@@ -147,6 +149,18 @@ soc {
 		dma-noncoherent;
 		ranges;
 
+		ccache: cache-controller@...0000 {
+			compatible = "starfive,jh7100-ccache", "sifive,ccache0", "cache";
+			reg = <0x0 0x2010000 0x0 0x1000>;
+			interrupts = <128>, <130>, <131>, <129>;
+			cache-block-size = <64>;
+			cache-level = <2>;
+			cache-sets = <2048>;
+			cache-size = <2097152>;
+			cache-unified;
+			sifive,cache-ops;
+		};
+
 		clint: clint@...0000 {
 			compatible = "starfive,jh7100-clint", "sifive,clint0";
 			reg = <0x0 0x2000000 0x0 0x10000>;
-- 
2.42.0