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From d3cf2859a056273400fbdf9d389b75750ff6ca5e Mon Sep 17 00:00:00 2001
From: David Abdurachmanov <david.abdurachmanov@sifive.com>
Date: Fri, 14 May 2021 05:27:51 -0700
Subject: [PATCH 6/7] riscv: sifive: unleashed: define opp table (cpufreq)
Source: https://github.com/sifive/riscv-linux/commits/dev/paulw/cpufreq-dt-aloe-v5.3-rc4
Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com>
---
arch/riscv/Kconfig | 8 +++++
arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 5 ++++
.../riscv/boot/dts/sifive/hifive-unleashed-a00.dts | 34 ++++++++++++++++++++++
3 files changed, 47 insertions(+)
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -711,6 +711,14 @@ config PORTABLE
select OF
select MMU
+menu "CPU Power Management"
+
+source "drivers/cpuidle/Kconfig"
+
+source "drivers/cpufreq/Kconfig"
+
+endmenu
+
menu "Power management options"
source "kernel/power/Kconfig"
--- a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
+++ b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
@@ -30,6 +30,7 @@
i-cache-size = <16384>;
reg = <0>;
riscv,isa = "rv64imac";
+ clocks = <&prci FU540_PRCI_CLK_COREPLL>;
status = "disabled";
cpu0_intc: interrupt-controller {
#interrupt-cells = <1>;
@@ -54,6 +55,7 @@
reg = <1>;
riscv,isa = "rv64imafdc";
tlb-split;
+ clocks = <&prci FU540_PRCI_CLK_COREPLL>;
next-level-cache = <&l2cache>;
cpu1_intc: interrupt-controller {
#interrupt-cells = <1>;
@@ -78,6 +80,7 @@
reg = <2>;
riscv,isa = "rv64imafdc";
tlb-split;
+ clocks = <&prci FU540_PRCI_CLK_COREPLL>;
next-level-cache = <&l2cache>;
cpu2_intc: interrupt-controller {
#interrupt-cells = <1>;
@@ -102,6 +105,7 @@
reg = <3>;
riscv,isa = "rv64imafdc";
tlb-split;
+ clocks = <&prci FU540_PRCI_CLK_COREPLL>;
next-level-cache = <&l2cache>;
cpu3_intc: interrupt-controller {
#interrupt-cells = <1>;
@@ -126,6 +130,7 @@
reg = <4>;
riscv,isa = "rv64imafdc";
tlb-split;
+ clocks = <&prci FU540_PRCI_CLK_COREPLL>;
next-level-cache = <&l2cache>;
cpu4_intc: interrupt-controller {
#interrupt-cells = <1>;
--- a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
+++ b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
@@ -80,6 +80,40 @@
label = "d4";
};
};
+
+ fu540_c000_opp_table: opp-table {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-350000000 {
+ opp-hz = /bits/ 64 <350000000>;
+ };
+ opp-700000000 {
+ opp-hz = /bits/ 64 <700000000>;
+ };
+ opp-999999999 {
+ opp-hz = /bits/ 64 <999999999>;
+ };
+ opp-1400000000 {
+ opp-hz = /bits/ 64 <1400000000>;
+ };
+ };
+};
+
+&cpu0 {
+ operating-points-v2 = <&fu540_c000_opp_table>;
+};
+&cpu1 {
+ operating-points-v2 = <&fu540_c000_opp_table>;
+};
+&cpu2 {
+ operating-points-v2 = <&fu540_c000_opp_table>;
+};
+&cpu3 {
+ operating-points-v2 = <&fu540_c000_opp_table>;
+};
+&cpu4 {
+ operating-points-v2 = <&fu540_c000_opp_table>;
};
&uart0 {
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