SPM R12寄存器记录MCU的唤醒源，MCU被唤醒时log打印具体唤醒源：
#define R12_PCM_TIMER_EVENT (1U << 0) ----> SPM 基本上没有定时器唤醒，只有当系统没有其他唤醒源时，超过1h，才会有此timer唤醒，可以理解为SPM 里面的看门狗 #define R12_SPM_TWAM_IRQ_B (1U << 1) ----> SPM 用来debug的中断，不会有 #define R12_KP_IRQ_B (1U << 2) ----> 按键中断 #define R12_APWDT_EVENT_B (1U << 3) ----> AP侧的WDT(看门狗)中断 #define R12_APXGPT1_EVENT_B (1U << 4) ----> APXGPT，这个是system timer，对应软件hrtimer，只有在idle时才有 #define R12_CONN2AP_SPM_WAKEUP_B (1U << 5) ----> CONN，WCN的中断，wifi/BT/GPS/FM的唤醒 #define R12_EINT_EVENT_B (1U << 6) ----> 例如，外部中断唤醒PMIC EINT，这种唤醒更为常见 #define R12_CONN_WDT_IRQ_B (1U << 7) ----> CONN的WDT(看门狗)中断 #define R12_CCIF0_EVENT_B (1U << 8) ----> Modem的CCIF0唤醒，例如，网络唤醒，网络唤醒URC唤醒更为常见 #define R12_LOWBATTERY_IRQ_B (1U << 9) ----> 低电池唤醒，基本没有 #define R12_SC_SSPM2SPM_WAKEUP (1U << 10) ----> SSPM唤醒，基本没有 #define R12_SC_SCP2SPM_WAKEUP (1U << 11) ----> sensor hub唤醒 #define R12_SC_ADSP2SPM_WAKEUP (1U << 12) ----> ADSP 也就是audio等等，基本没有 #define R12_PCM_WDT_EVENT_B (1U << 13) ---->跟1是类似 #define R12_USBX_CDSC_B (1U << 14) ---->USB 唤醒 #define R12_USBX_POWERDWN_B (1U << 15) ---->USB 唤醒 #define R12_SYS_TIMER_EVENT_B (1U << 16) ---->跟4类似 #define R12_EINT_EVENT_SECURE_B (1U << 17) ---->跟 SECURE EINT唤醒 #define R12_CCIF1_EVENT_B (1U << 18) ---->跟8类似 #define R12_UART0_IRQ_B (1U << 19) ---->uart 0唤醒 #define R12_AFE_IRQ_MCU_B (1U << 20) ---->AFE，audio相关的唤醒 #define R12_THERMAL_CTRL_EVENT_B (1U << 21) ---->Thermal的唤醒 #define R12_SYS_CIRQ_IRQ_B (1U << 22) ----> CIRQ的唤醒，当系统休眠时GIC backup到CIRQ #define R12_MD2AP_PEER_WAKEUP_EVENT (1U << 23) ----> 唤醒数据业务 #define R12_CSYSPWREQ_B (1U << 24) ----> debug用 #define R12_MD1_WDT_B (1U << 25) ----> Modem的WDT唤醒(看门狗) #define R12_AP2AP_PEER_WAKEUP_EVENT (1U << 26) ----> 唤醒数据业务 #define R12_SEJ_EVENT_B (1U << 27) ----> SEJ模块唤醒 #define R12_SPM_CPU_WAKEUP_EVENT (1U << 28) ----> CPU唤醒 #define R12_CPU_IRQOUT (1U << 29) ----> CPU唤醒 #define R12_CPU_WFI (1U << 30) ----> CPU唤醒 #define R12_MCUSYS_IDLE_TO_EMI_ALL (1U << 31) ----> CPU唤醒