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

[Zong Li]

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...@sifive.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@10060000 {
                        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