linux-kernel - [PATCH 10/12] riscv: dts: starfive: jh7100: Add ccache DT node

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Message-Id: <20230211031821.976408-11-cristian.ciocaltea@collabora.com>
Date:   Sat, 11 Feb 2023 05:18:19 +0200
From:   Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To:     Lee Jones <lee@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Emil Renner Berthing <kernel@...il.dk>,
        Conor Dooley <conor@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Richard Cochran <richardcochran@...il.com>,
        Sagar Kadam <sagar.kadam@...ive.com>,
        Yanhong Wang <yanhong.wang@...rfivetech.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...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 10/12] 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.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
---
 arch/riscv/boot/dts/starfive/jh7100.dtsi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7100.dtsi b/arch/riscv/boot/dts/starfive/jh7100.dtsi
index 7109e70fdab8..88f91bc5753b 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";
 			tlb-split;
 
@@ -57,6 +58,7 @@ U74_1: cpu@1 {
 			i-tlb-sets = <1>;
 			i-tlb-size = <32>;
 			mmu-type = "riscv,sv39";
+			next-level-cache = <&ccache>;
 			riscv,isa = "rv64imafdc";
 			tlb-split;
 
@@ -116,6 +118,20 @@ soc {
 		ranges;
 		dma-noncoherent;
 
+		ccache: cache-controller@...0000 {
+			compatible = "starfive,jh7100-ccache", "cache";
+			reg = <0x0 0x2010000 0x0 0x1000>,
+			      <0x0 0x8000000 0x0 0x2000000>;
+			reg-names = "control", "sideband";
+			interrupts = <128>, <130>, <131>, <129>;
+			cache-block-size = <64>;
+			cache-level = <2>;
+			cache-sets = <2048>;
+			cache-size = <2097152>;
+			cache-unified;
+			uncached-offset = <0xf 0x80000000>;
+		};
+
 		clint: clint@...0000 {
 			compatible = "starfive,jh7100-clint", "sifive,clint0";
 			reg = <0x0 0x2000000 0x0 0x10000>;
-- 
2.39.1