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[参考译文] TDA2HG：omapconf show opp，MPU opp 未知

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Guru**** 2540720 points
Other Parts Discussed in Thread: TDA2HG

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/860167/tda2hg-omapconf-show-opp-mpu-opp-unknown

器件型号：TDA2HG
您好，我们的主板是 tda2hg 并且在 A15上运行 Linux OS。  我将 MPU 的频率从1GHz 更改为750MHz。  但是 、当我运行 omapconf show opp 。时、printf 会跟随。  
我想知道为什么 MPU opp 未知。  我已经修改 了 dra7.dtsi 中的 devicetree、并且 uboot 代码添加 了 MPU_DPLL_params_750MHz。   
omapconf：警告：VDD_MPU OPP 没有匹配速率。请根据数据手册建议检查速率。
|------------------------------------------------------------------ |
|                       |温度|电压|频率     |工作点|
|------------------------------------------------------------------ |
| VDD_CORE / VDD_CORE0  | 36C/96F  | 0.000V |               |标称            值|
|  L3                  |                    || 266 MHz     |                |
|  DMM                 |                    || 266 MHz     |                |
|  EMIF1               |            |        | 266MHz      |                |
|  EMIF2               |                    || 266MHz       |                |
|    LP-DDR2           |                    || 532MHz      |                |
|  L4                  |            |        || 266 MHz     |                |
|  IPU1                |            |        | 425MHz      |                |
|    Cortex-M4内核   |            |        | 212MHz      |                |
|  IPU2                |            |        | 425MHz       |                |
|    Cortex-M4内核   |            |        | 212MHz      |                |
|  DSS                 |                    || 192MHz      |                |
|  BB2D                |                    ||(2128MHz)(1)|                 
|                       |            |        |               ||                 |
| VDD_MPU / VDD_Core1   | 36C/96F  | 1.070V |               |未知        |
|  MPU (CPU1打开)       |                    || 750MHz      |                |
|                       |            |        |               ||                 |
| VDD_GPU / VDD_Cor2   | 37C/98F  | 1.010V |               |标称            值|
|  GPU                 |                    || 425MHz      |                 
|                       |            |        |               ||                 |
| VDD_DSPEVE / VDD_CORE3 | 36C / 96F  | 1.010V |               |标称            值|
|  DSP1                |                    || 600MHz      |                |
|  DSP2                |            |        | 600MHz      |                |
|  EVE1                |                    || 535 MHz     |                |
|  EVE2                |            |        | 535  MHz     |                |
|                       |            |        |               ||                 |
| VDD_IVA / VDD_CORE4   | 37C/98F  | 1.010V |               |标称            值|
|  IVA                 |                    || 388MHz      |                |
|                       |            |        |               ||                 |
|------------------------------------------------------------------ |
注：
 (1)模块已禁用、速率可能不相关。
  • 0
    TI__Guru**** 2540720 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    你(们)好

     您可以通过运行命令"cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq "来确认当前运行速度

    时钟树信息也在 "cat /sys/kernel/debug "下报告

    Omapconf 可动态计算 MPU 的频率(通过读取 PLL 寄存器)并将其检测为750MHz。
    然后、它会将频率与 omapconf 源代码下定义的静态表进行比较。

    但是、根据 OPP 表、750MHz 是未知频率、因此会打印未知 OPP。