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Message-ID: <20241031070232.1793078-14-masterr3c0rd@epochal.quest>
Date: Thu, 31 Oct 2024 04:02:26 -0300
From: Cody Eksal <masterr3c0rd@...chal.quest>
To: Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Chen-Yu Tsai <wens@...e.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
Maxime Ripard <mripard@...nel.org>,
Michael Turquette <mturquette@...libre.com>,
Nishanth Menon <nm@...com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Stephen Boyd <sboyd@...nel.org>,
Vinod Koul <vkoul@...nel.org>,
Viresh Kumar <vireshk@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Yangtao Li <tiny.windzz@...il.com>,
Parthiban <parthiban@...umiz.com>,
Andre Przywara <andre.przywara@....com>,
Cody Eksal <masterr3c0rd@...chal.quest>,
devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-sunxi@...ts.linux.dev,
linux-kernel@...r.kernel.org
Subject: [PATCH v2 13/13] arm64: dts: allwinner: a100: Add CPU Operating Performance Points table
From: Shuosheng Huang <huangshuosheng@...winnertech.com>
Add an Operating Performance Points table for the CPU cores to
enable Dynamic Voltage & Frequency Scaling on the A100.
Signed-off-by: Shuosheng Huang <huangshuosheng@...winnertech.com>
[masterr3c0rd@...chal.quest: fix typos in -cpu-opp, use compatible]
Signed-off-by: Cody Eksal <masterr3c0rd@...chal.quest>
---
Changes in V2:
- Rename cpu-opp-table to opp-table-cpu
- Use single cell version of opp-microvolt-speedX
.../allwinner/sun50i-a100-allwinner-perf1.dts | 5 ++
.../dts/allwinner/sun50i-a100-cpu-opp.dtsi | 90 +++++++++++++++++++
.../arm64/boot/dts/allwinner/sun50i-a100.dtsi | 8 ++
3 files changed, 103 insertions(+)
create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a100-cpu-opp.dtsi
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts b/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts
index d418fc272b3c..1fb629df9f1d 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts
@@ -6,6 +6,7 @@
/dts-v1/;
#include "sun50i-a100.dtsi"
+#include "sun50i-a100-cpu-opp.dtsi"
#include <dt-bindings/gpio/gpio.h>
@@ -68,6 +69,10 @@ &usb_otg {
status = "okay";
};
+&cpu0 {
+ cpu-supply = <®_dcdc2>;
+};
+
&pio {
vcc-pb-supply = <®_dcdc1>;
vcc-pc-supply = <®_eldo1>;
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100-cpu-opp.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a100-cpu-opp.dtsi
new file mode 100644
index 000000000000..c6a2efa037dc
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a100-cpu-opp.dtsi
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+// Copyright (c) 2020 Yangtao Li <frank@...winnertech.com>
+// Copyright (c) 2020 ShuoSheng Huang <huangshuosheng@...winnertech.com>
+
+/ {
+ cpu_opp_table: opp-table-cpu {
+ compatible = "allwinner,sun50i-a100-operating-points";
+ nvmem-cells = <&cpu_speed_grade>;
+ opp-shared;
+
+ opp-408000000 {
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ opp-hz = /bits/ 64 <408000000>;
+
+ opp-microvolt-speed0 = <900000>;
+ opp-microvolt-speed1 = <900000>;
+ opp-microvolt-speed2 = <900000>;
+ };
+
+ opp-600000000 {
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ opp-hz = /bits/ 64 <600000000>;
+
+ opp-microvolt-speed0 = <900000>;
+ opp-microvolt-speed1 = <900000>;
+ opp-microvolt-speed2 = <900000>;
+ };
+
+ opp-816000000 {
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ opp-hz = /bits/ 64 <816000000>;
+
+ opp-microvolt-speed0 = <940000>;
+ opp-microvolt-speed1 = <900000>;
+ opp-microvolt-speed2 = <900000>;
+ };
+
+ opp-1080000000 {
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ opp-hz = /bits/ 64 <1080000000>;
+
+ opp-microvolt-speed0 = <1020000>;
+ opp-microvolt-speed1 = <980000>;
+ opp-microvolt-speed2 = <950000>;
+ };
+
+ opp-1200000000 {
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ opp-hz = /bits/ 64 <1200000000>;
+
+ opp-microvolt-speed0 = <1100000>;
+ opp-microvolt-speed1 = <1020000>;
+ opp-microvolt-speed2 = <1000000>;
+ };
+
+ opp-1320000000 {
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ opp-hz = /bits/ 64 <1320000000>;
+
+ opp-microvolt-speed0 = <1160000>;
+ opp-microvolt-speed1 = <1060000>;
+ opp-microvolt-speed2 = <1030000>;
+ };
+
+ opp-1464000000 {
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ opp-hz = /bits/ 64 <1464000000>;
+
+ opp-microvolt-speed0 = <1180000>;
+ opp-microvolt-speed1 = <1180000>;
+ opp-microvolt-speed2 = <1130000>;
+ };
+ };
+};
+
+&cpu0 {
+ operating-points-v2 = <&cpu_opp_table>;
+};
+
+&cpu1 {
+ operating-points-v2 = <&cpu_opp_table>;
+};
+
+&cpu2 {
+ operating-points-v2 = <&cpu_opp_table>;
+};
+
+&cpu3 {
+ operating-points-v2 = <&cpu_opp_table>;
+};
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi
index 29ac7716c7a5..6a76858b654a 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi
@@ -23,6 +23,7 @@ cpu0: cpu@0 {
device_type = "cpu";
reg = <0x0>;
enable-method = "psci";
+ clocks = <&ccu CLK_CPUX>;
};
cpu1: cpu@1 {
@@ -30,6 +31,7 @@ cpu1: cpu@1 {
device_type = "cpu";
reg = <0x1>;
enable-method = "psci";
+ clocks = <&ccu CLK_CPUX>;
};
cpu2: cpu@2 {
@@ -37,6 +39,7 @@ cpu2: cpu@2 {
device_type = "cpu";
reg = <0x2>;
enable-method = "psci";
+ clocks = <&ccu CLK_CPUX>;
};
cpu3: cpu@3 {
@@ -44,6 +47,7 @@ cpu3: cpu@3 {
device_type = "cpu";
reg = <0x3>;
enable-method = "psci";
+ clocks = <&ccu CLK_CPUX>;
};
};
@@ -142,6 +146,10 @@ efuse@...6000 {
ths_calibration: calib@14 {
reg = <0x14 8>;
};
+
+ cpu_speed_grade: cpu-speed-grade@1c {
+ reg = <0x1c 0x2>;
+ };
};
watchdog@...90a0 {
--
2.47.0
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