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- What: /sys/devices/platform/hidma-mgmt*/chanops/chan*/priority
- /sys/devices/platform/QCOM8060:*/chanops/chan*/priority
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Contains either 0 or 1 and indicates if the DMA channel is a
- low priority (0) or high priority (1) channel.
- What: /sys/devices/platform/hidma-mgmt*/chanops/chan*/weight
- /sys/devices/platform/QCOM8060:*/chanops/chan*/weight
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Contains 0..15 and indicates the weight of the channel among
- equal priority channels during round robin scheduling.
- What: /sys/devices/platform/hidma-mgmt*/chreset_timeout_cycles
- /sys/devices/platform/QCOM8060:*/chreset_timeout_cycles
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Contains the platform specific cycle value to wait after a
- reset command is issued. If the value is chosen too short,
- then the HW will issue a reset failure interrupt. The value
- is platform specific and should not be changed without
- consultance.
- What: /sys/devices/platform/hidma-mgmt*/dma_channels
- /sys/devices/platform/QCOM8060:*/dma_channels
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Contains the number of dma channels supported by one instance
- of HIDMA hardware. The value may change from chip to chip.
- What: /sys/devices/platform/hidma-mgmt*/hw_version_major
- /sys/devices/platform/QCOM8060:*/hw_version_major
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Version number major for the hardware.
- What: /sys/devices/platform/hidma-mgmt*/hw_version_minor
- /sys/devices/platform/QCOM8060:*/hw_version_minor
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Version number minor for the hardware.
- What: /sys/devices/platform/hidma-mgmt*/max_rd_xactions
- /sys/devices/platform/QCOM8060:*/max_rd_xactions
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Contains a value between 0 and 31. Maximum number of
- read transactions that can be issued back to back.
- Choosing a higher number gives better performance but
- can also cause performance reduction to other peripherals
- sharing the same bus.
- What: /sys/devices/platform/hidma-mgmt*/max_read_request
- /sys/devices/platform/QCOM8060:*/max_read_request
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Size of each read request. The value needs to be a power
- of two and can be between 128 and 1024.
- What: /sys/devices/platform/hidma-mgmt*/max_wr_xactions
- /sys/devices/platform/QCOM8060:*/max_wr_xactions
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Contains a value between 0 and 31. Maximum number of
- write transactions that can be issued back to back.
- Choosing a higher number gives better performance but
- can also cause performance reduction to other peripherals
- sharing the same bus.
- What: /sys/devices/platform/hidma-mgmt*/max_write_request
- /sys/devices/platform/QCOM8060:*/max_write_request
- Date: Nov 2015
- KernelVersion: 4.4
- Contact: "Sinan Kaya <[email protected]>"
- Description:
- Size of each write request. The value needs to be a power
- of two and can be between 128 and 1024.
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