[PATCH v5 0/3] ARM: sun8i-r40: CPU improve

[qianfanguijin at 163.com]

From: qianfan Zhao <qianfanguijin at 163.com>

Change history:
===============
v5(2022-05-17):
- Move opp tables to sun8i-r40-cpu-opp.dtsi
- cpufreq supports 720M, 912M, 1G, 1.1G, 1.2G
- Add cooling supports

v4(2022-05-16):
- Invert two patches.
- Drop the cpufreqs that exceeds 1G in opp tables.

v3:
- remove "allwinner-r40" compatible from allowlist.
- split dts in two part.

Test:
=====

cpufreq was tested by tools: https://github.com/ssvb/cpuburn-arm

1. cpufreq-ljt-stress-test

- root at ubuntu:~/cpuburn-arm-master# ./cpufreq-ljt-stress-test 
- CPU stress test, which is doing JPEG decoding by libjpeg-turbo
- at different cpufreq operating points.
- 
- Testing CPU 0
-  1200 MHz ............................................................ OK
-  1104 MHz ............................................................ OK
-  1008 MHz ............................................................ OK
-   912 MHz ............................................................ OK
-   720 MHz ............................................................ OK
- 
- Testing CPU 1
-  1200 MHz ............................................................ OK
-  1104 MHz ............................................................ OK
-  1008 MHz ............................................................ OK
-   912 MHz ............................................................ OK
-   720 MHz ............................................................ OK
- 
- Testing CPU 2
-  1200 MHz ............................................................ OK
-  1104 MHz ............................................................ OK
-  1008 MHz ............................................................ OK
-   912 MHz ............................................................ OK
-   720 MHz ............................................................ OK
- 
- Testing CPU 3
-  1200 MHz ............................................................ OK
-  1104 MHz ............................................................ OK
-  1008 MHz ............................................................ OK
-   912 MHz ............................................................ OK
-   720 MHz ............................................................ OK

Overall result : PASSED

2. cpu freq slow down when cpuburn-a7.out running

- temperature: 79213, online: 0-3, freq: 1200000
- temperature: 79213, online: 0-3, freq: 1200000
- temperature: 80230, online: 0-3, freq: 1104000
- temperature: 78874, online: 0-3, freq: 1200000
- temperature: 80004, online: 0-3, freq: 1104000
- temperature: 79213, online: 0-3, freq: 1200000
- temperature: 78196, online: 0-3, freq: 1200000
- temperature: 79891, online: 0-3, freq: 1200000
- temperature: 78422, online: 0-3, freq: 1200000
- temperature: 80343, online: 0-3, freq: 1104000
- temperature: 80343, online: 0-3, freq: 1104000


qianfan Zhao (3):
  ARM: dts: sun8i-r40: Add "cpu-supply" node for sun8i-r40 based board
  ARM: dts: sun8i-r40: add opp table for cpu
  ARM: dts: sun8i-r40: Add thermal trip points/cooling maps

 .../boot/dts/sun8i-r40-bananapi-m2-ultra.dts  |  5 ++
 arch/arm/boot/dts/sun8i-r40-cpu-opp.dtsi      | 52 +++++++++++++++++++
 arch/arm/boot/dts/sun8i-r40-feta40i.dtsi      |  5 ++
 arch/arm/boot/dts/sun8i-r40.dtsi              | 36 +++++++++++++
 arch/arm/boot/dts/sun8i-t3-cqa3t-bv3.dts      |  5 ++
 .../boot/dts/sun8i-v40-bananapi-m2-berry.dts  |  5 ++
 6 files changed, 108 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun8i-r40-cpu-opp.dtsi

-- 
2.25.1