| 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@kernel.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@kernel.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@kernel.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@kernel.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@kernel.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@kernel.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@kernel.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@kernel.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@kernel.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@kernel.org>" |
| Description: |
| Size of each write request. The value needs to be a power |
| of two and can be between 128 and 1024. |
