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