lkml.org 
[lkml]   [2021]   [Oct]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[v4 10/11] riscv: dts: fu740: Add pmu node
Date
HiFive unmatched supports HPMCounters but does not implement mcountinhibit
or sscof extension. Thus, perf monitoring can be used on the unmatched
board without sampling.

Add the PMU node with compatible string so that Linux perf driver can
utilize this to enable PMU.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
---
arch/riscv/boot/dts/sifive/fu740-c000.dtsi | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/riscv/boot/dts/sifive/fu740-c000.dtsi b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
index abbb960f90a0..b35b96b58820 100644
--- a/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
+++ b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
@@ -140,6 +140,9 @@ soc {
#size-cells = <2>;
compatible = "simple-bus";
ranges;
+ pmu {
+ compatible = "riscv,pmu";
+ };
plic0: interrupt-controller@c000000 {
#interrupt-cells = <1>;
#address-cells = <0>;
--
2.31.1
\
 
 \ /
  Last update: 2021-10-25 22:03    [W:0.394 / U:0.104 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site