| * MSM Sleep status |
| |
| MSM Sleep status device is used to check the power collapsed status of a |
| offlined core. The core that initiates the hotplug would wait on the |
| sleep status device before CPU_DEAD notifications are sent out. Some hardware |
| devices require that the offlined core is power collapsed before turning off |
| the resources that are used by the offlined core. |
| |
| The required properties of sleep status device are: |
| |
| - compatible: qcom,cpu-sleep-status |
| - reg: physical address of the sleep status register for Core 0 |
| - qcom,cpu-alias-addr - On MSM chipset, the each cores registers are at a |
| fixed offset each other. |
| - qcom,cpu-sleep-status-mask - The bit mask within the status register that |
| indicates the Core's sleep state. |
| |
| Example: |
| qcom,cpu-sleep-status@f9088008 { |
| compatible = "qcom,cpu-sleep-status"; |
| reg = <0xf9088008 0x4>; |
| qcom,cpu-alias-addr = <0x10000>; |
| qcom,sleep-status-mask= <0x80000>; |
| }; |
