linux-kernel - [RFC PATCH 2/6] riscv: dts: sifive: Add DT support for PMU

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Message-Id: <b90858e0baa2184d8aeac1a930c6d6882f9cc09f.1593397455.git.zong.li@sifive.com>
Date:   Mon, 29 Jun 2020 11:19:11 +0800
From:   Zong Li <zong.li@...ive.com>
To:     palmer@...belt.com, paul.walmsley@...ive.com,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Zong Li <zong.li@...ive.com>
Subject: [RFC PATCH 2/6] riscv: dts: sifive: Add DT support for PMU

Add performance monitor unit DT node in SiFive Fu540 soc-specific DT
file. This pmu node passes the dtbs_check verification.

Signed-off-by: Zong Li <zong.li@...ive.com>
---
 arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
index 7db861053483..824351fe2a57 100644
--- a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
+++ b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
@@ -283,4 +283,17 @@ gpio: gpio@...60000 {
 			status = "disabled";
 		};
 	};
+	pmu {
+		compatible = "riscv,pmu";
+		riscv,width-base-cntr = <64>;
+		riscv,width-event-cntr = <40>;
+		riscv,n-event-cntr = <2>;
+		riscv,hw-event-map = <0x0 0x0
+				      0x1 0x1
+				      0x3 0x0202
+				      0x4 0x4000
+				      0x5 0x2001>;
+		riscv,hw-cache-event-map = <0x010201 0x0102
+					    0x010204 0x0802>;
+	};
 };
-- 
2.27.0