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linux-imx/Documentation/ABI/testing/sysfs-platform-hidma-mgmt
Amit Kumar c4c5cd695f dmaengine: qcom_hidma: Wrong domain name in the email address 
cudeaurora.org is used in place of codeaurora.org
in the contact field.

Signed-off-by: Amit Kumar <free.amit.kumar@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2017-01-02 10:42:33 +05:30

3.4 KiB
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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 okaya@codeaurora.org" 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 okaya@codeaurora.org" 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 okaya@codeaurora.org" 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 okaya@codeaurora.org" 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 okaya@codeaurora.org" 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 okaya@codeaurora.org" 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 okaya@codeaurora.org" 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 okaya@codeaurora.org" 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 okaya@codeaurora.org" 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 okaya@codeaurora.org" Description: Size of each write request. The value needs to be a power of two and can be between 128 and 1024.