【鲲鹏920】【cpufreq】【22.03 SP01】【22.03 SP02】Kunpeng 920 服务器，无法通过cpupower frequency-info查看和调节 cpu 频率

**【标题描述】【22.03 SP01】【22.03 SP02】Kunpeng 920 服务器，无法通过cpupower frequency-info查看和调节 cpu 频率**

**一、缺陷信息**

**内核信息：**
Linux aarch64-worker  **5.10.0-153.26.0.102.oe2203sp2.aarch64**  #1 SMP Wed Sep 6 17:00:53 CST 2023 aarch64 aarch64 aarch64 GNU/Linux

**缺陷归属组件：**
cpufreq

**【环境信息】**
硬件信息
- Kunpeng 920 服务器
- bios配置
![输入图片说明](https://foruda.gitee.com/images/1694760702730979434/a7e909db_9324975.png "屏幕截图")
![输入图片说明](https://foruda.gitee.com/images/1694760722961764493/863e9497_9324975.png "屏幕截图")
其他调整DEMT和CPU Flex Ratio Override的也都测试了会有问题

软件信息
- Linux aarch64-worker 5.10.0-153.26.0.102.oe2203sp2.aarch64 #1 SMP Wed Sep 6 17:00:53 CST 2023 aarch64 aarch64 aarch64 GNU/Linux

**【问题复现步骤】**
cpupower frequency-info

**【实际结果】**
报错 no or unknown cpufreq driver is active on this CPU
```
[root@aarch64-worker ~]# cpupower frequency-info
analyzing CPU 0:
  no or unknown cpufreq driver is active on this CPU
  CPUs which run at the same hardware frequency: Not Available
  CPUs which need to have their frequency coordinated by software: Not Available
  maximum transition latency:  Cannot determine or is not supported.
Not Available
  available cpufreq governors: Not Available
  Unable to determine current policy
  current CPU frequency: Unable to call hardware
  current CPU frequency:  Unable to call to kernel
```
 **其他信息：** 
/sys/devices/system/cpu/cpu0目录下没有cpufreq目录
```
[root@aarch64-worker ~]# ls /sys/devices/system/cpu/cpu0 -l
总用量 0
drwxr-xr-x. 6 root root    0  9月 15 14:39 cache
-r--r--r--. 1 root root 4096  9月 15 14:56 cpu_capacity
-r--------. 1 root root 4096  9月 15 14:39 crash_notes
-r--------. 1 root root 4096  9月 15 14:39 crash_notes_size
lrwxrwxrwx. 1 root root    0  9月 15 14:56 driver -> ../../../../bus/cpu/drivers/processor
lrwxrwxrwx. 1 root root    0  9月 15 14:56 firmware_node -> ../../../LNXSYSTM:00/LNXSYBUS:00/ACPI0007:00
drwxr-xr-x. 2 root root    0  9月 15 14:56 hotplug
lrwxrwxrwx. 1 root root    0  9月 15 14:56 node0 -> ../../node/node0
drwxr-xr-x. 2 root root    0  9月 15 14:56 power
drwxr-xr-x. 3 root root    0  9月 15 14:56 regs
lrwxrwxrwx. 1 root root    0  9月 15 14:38 subsystem -> ../../../../bus/cpu
drwxr-xr-x. 2 root root    0  9月 15 14:39 topology
-rw-r--r--. 1 root root 4096  9月 15 14:38 uevent
```

/sys/devices/system/cpu/cpufreq/目录下为空

```
[root@aarch64-worker ~]# ls /sys/devices/system/cpu/cpufreq/
[root@aarch64-worker ~]#
```

Hi fengfeixi, welcome to the openEuler Community.
I'm the Bot here serving you. You can find the instructions on how to interact with me at Here.
If you have any questions, please contact the SIG: Kernel, and any of the maintainers.

我们这边换了机器看了下：
Kunpeng 920 5250 型号CPU 的在Bios Power Policy=Efficiency的情况下，就可以查询到cpu频率。
Kunpeng 920 5232 型号CPU 同样配置，通过各类调整Bios选项，无法查询到cpu频率。

所以咨询下是否两个不同版本CPU对cpufreq的支持情况有差异？或者5232的cpu，怎么才能实现cpu频率可时、可调的功能呢？

thanks

好的，确认了下问题环境的BIOS版本确实较低。我们更换设备或者升级试下。多谢

[root@aarch64-worker ~]# dmidecode -t bios
# dmidecode 3.4
Getting SMBIOS data from sysfs.
SMBIOS 3.2.0 present.

Handle 0x0000, DMI type 0, 26 bytes
BIOS Information
        Vendor: Huawei Corp.
        Version: 1.39
        Release Date: 06/11/2020
        Address: 0x5F000
        Runtime Size: 644 kB
        ROM Size: 6 MB
        Characteristics:
                PCI is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                Boot from CD is supported
                Selectable boot is supported
                EDD is supported
                Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
                Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
                5.25"/360 kB floppy services are supported (int 13h)
                5.25"/1.2 MB floppy services are supported (int 13h)
                3.5"/720 kB floppy services are supported (int 13h)
                3.5"/2.88 MB floppy services are supported (int 13h)
                8042 keyboard services are supported (int 9h)
                CGA/mono video services are supported (int 10h)
                ACPI is supported
                USB legacy is supported
                BIOS boot specification is supported
                Targeted content distribution is supported
                UEFI is supported
        BIOS Revision: 0.0

Handle 0x0004, DMI type 13, 22 bytes
BIOS Language Information
        Language Description Format: Long
        Installable Languages: 1
                en|US|iso8859-1
        Currently Installed Language: en|US|iso8859-1

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