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sunxi: backport h5 cpufreq support from upstream linux

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(cherry picked from commit ecd317d8f4)
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AmadeusGhost 2021-02-10 12:20:21 +08:00 committed by Tianling Shen
parent 4a4729327d
commit 632c4c91e7
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2 changed files with 182 additions and 0 deletions
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54
target/linux/sunxi/patches-5.4/016-arm64-dts-allwinner-h5-Add-clock-to-CPU-cores.patch Normal file
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@ -0,0 +1,54 @@
From 5fa21c1354c93cb9fe8239545b17eee46e39dd69 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Sat, 18 Jul 2020 00:00:49 +0800
Subject: [PATCH] arm64: dts: allwinner: h5: Add clock to CPU cores
The ARM CPU cores are fed by the CPU clock from the CCU. Add a
reference to the clock for each CPU core, along with the clock
transition latency.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200717160053.31191-5-wens@kernel.org
---
arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
@@ -52,6 +52,8 @@
device_type = "cpu";
reg = <0>;
enable-method = "psci";
+ clocks = <&ccu CLK_CPUX>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
};
cpu1: cpu@1 {
@@ -59,6 +61,8 @@
device_type = "cpu";
reg = <1>;
enable-method = "psci";
+ clocks = <&ccu CLK_CPUX>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
};
cpu2: cpu@2 {
@@ -66,6 +70,8 @@
device_type = "cpu";
reg = <2>;
enable-method = "psci";
+ clocks = <&ccu CLK_CPUX>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
};
cpu3: cpu@3 {
@@ -73,6 +79,8 @@
device_type = "cpu";
reg = <3>;
enable-method = "psci";
+ clocks = <&ccu CLK_CPUX>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
};
};

128
target/linux/sunxi/patches-5.4/018-arm64-dts-allwinner-h5-Add-CPU-OPP-table.patch Normal file
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@ -0,0 +1,128 @@
From 7240598ba4e6c477c6809dc019505cf366fdb7c0 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Sat, 18 Jul 2020 00:00:51 +0800
Subject: [PATCH] arm64: dts: allwinner: h5: Add CPU Operating Performance
Points table
Add an OPP (Operating Performance Points) table for the CPU cores for
boards to include to DVFS (Dynamic Voltage & Frequency Scaling) on the
H5. The table originates from Armbian, but the maximum voltage is raised
slightly to account for boards using slightly higher voltages.
The table and tie in to the CPU cores are put in a separate dtsi file
that board files can include to opt in. Or they can define their own
tables if the standard one does not fit.
This has been tested on the Libre Computer ALL-H3-CC-H5 and the Bananapi
M2+ v1.2 H5, both with adequate cooling. The former has a fixed 1.2V
regulator, while the latter has a GPIO controlled regulator switchable
between 1.1V and 1.3V.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200717160053.31191-7-wens@kernel.org
---
.../boot/dts/allwinner/sun50i-h5-cpu-opp.dtsi | 79 +++++++++++++++++++
1 file changed, 79 insertions(+)
create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h5-cpu-opp.dtsi
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-cpu-opp.dtsi
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+// Copyright (C) 2020 Chen-Yu Tsai <wens@csie.org>
+
+/ {
+ cpu_opp_table: cpu-opp-table {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-408000000 {
+ opp-hz = /bits/ 64 <408000000>;
+ opp-microvolt = <1000000 1000000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-648000000 {
+ opp-hz = /bits/ 64 <648000000>;
+ opp-microvolt = <1040000 1040000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-816000000 {
+ opp-hz = /bits/ 64 <816000000>;
+ opp-microvolt = <1080000 1080000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-912000000 {
+ opp-hz = /bits/ 64 <912000000>;
+ opp-microvolt = <1120000 1120000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-960000000 {
+ opp-hz = /bits/ 64 <960000000>;
+ opp-microvolt = <1160000 1160000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1008000000 {
+ opp-hz = /bits/ 64 <1008000000>;
+ opp-microvolt = <1200000 1200000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1056000000 {
+ opp-hz = /bits/ 64 <1056000000>;
+ opp-microvolt = <1240000 1240000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1104000000 {
+ opp-hz = /bits/ 64 <1104000000>;
+ opp-microvolt = <1260000 1260000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1152000000 {
+ opp-hz = /bits/ 64 <1152000000>;
+ opp-microvolt = <1300000 1300000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1200000000 {
+ opp-hz = /bits/ 64 <1200000000>;
+ opp-microvolt = <1300000 1300000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1248000000 {
+ opp-hz = /bits/ 64 <1248000000>;
+ opp-microvolt = <1300000 1300000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1296000000 {
+ opp-hz = /bits/ 64 <1296000000>;
+ opp-microvolt = <1300000 1300000 1310000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+ };
+};
+
+&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>;
+};