1233294SstasWhat: /sys/devices/platform/hidma-mgmt*/chanops/chan*/priority 2178825Sdfr /sys/devices/platform/QCOM8060:*/chanops/chan*/priority 3178825SdfrDate: Nov 2015 4178825SdfrKernelVersion: 4.4 5178825SdfrContact: "Sinan Kaya <okaya@kernel.org>" 6178825SdfrDescription: 7178825Sdfr Contains either 0 or 1 and indicates if the DMA channel is a 8178825Sdfr low priority (0) or high priority (1) channel. 9178825Sdfr 10178825SdfrWhat: /sys/devices/platform/hidma-mgmt*/chanops/chan*/weight 11178825Sdfr /sys/devices/platform/QCOM8060:*/chanops/chan*/weight 12178825SdfrDate: Nov 2015 13178825SdfrKernelVersion: 4.4 14178825SdfrContact: "Sinan Kaya <okaya@kernel.org>" 15178825SdfrDescription: 16178825Sdfr Contains 0..15 and indicates the weight of the channel among 17178825Sdfr equal priority channels during round robin scheduling. 18178825Sdfr 19178825SdfrWhat: /sys/devices/platform/hidma-mgmt*/chreset_timeout_cycles 20178825Sdfr /sys/devices/platform/QCOM8060:*/chreset_timeout_cycles 21178825SdfrDate: Nov 2015 22178825SdfrKernelVersion: 4.4 23178825SdfrContact: "Sinan Kaya <okaya@kernel.org>" 24178825SdfrDescription: 25178825Sdfr Contains the platform specific cycle value to wait after a 26178825Sdfr reset command is issued. If the value is chosen too short, 27178825Sdfr then the HW will issue a reset failure interrupt. The value 28178825Sdfr is platform specific and should not be changed without 29178825Sdfr consultance. 30178825Sdfr 31178825SdfrWhat: /sys/devices/platform/hidma-mgmt*/dma_channels 32178825Sdfr /sys/devices/platform/QCOM8060:*/dma_channels 33178825SdfrDate: Nov 2015 34178825SdfrKernelVersion: 4.4 35178825SdfrContact: "Sinan Kaya <okaya@kernel.org>" 36178825SdfrDescription: 37178825Sdfr Contains the number of dma channels supported by one instance 38178825Sdfr of HIDMA hardware. The value may change from chip to chip. 39178825Sdfr 40178825SdfrWhat: /sys/devices/platform/hidma-mgmt*/hw_version_major 41178825Sdfr /sys/devices/platform/QCOM8060:*/hw_version_major 42178825SdfrDate: Nov 2015 43178825SdfrKernelVersion: 4.4 44178825SdfrContact: "Sinan Kaya <okaya@kernel.org>" 45178825SdfrDescription: 46178825Sdfr Version number major for the hardware. 47178825Sdfr 48178825SdfrWhat: /sys/devices/platform/hidma-mgmt*/hw_version_minor 49178825Sdfr /sys/devices/platform/QCOM8060:*/hw_version_minor 50178825SdfrDate: Nov 2015 51178825SdfrKernelVersion: 4.4 52178825SdfrContact: "Sinan Kaya <okaya@kernel.org>" 53178825SdfrDescription: 54178825Sdfr Version number minor for the hardware. 55178825Sdfr 56178825SdfrWhat: /sys/devices/platform/hidma-mgmt*/max_rd_xactions 57178825Sdfr /sys/devices/platform/QCOM8060:*/max_rd_xactions 58178825SdfrDate: Nov 2015 59178825SdfrKernelVersion: 4.4 60178825SdfrContact: "Sinan Kaya <okaya@kernel.org>" 61178825SdfrDescription: 62178825Sdfr Contains a value between 0 and 31. Maximum number of 63178825Sdfr read transactions that can be issued back to back. 64 Choosing a higher number gives better performance but 65 can also cause performance reduction to other peripherals 66 sharing the same bus. 67 68What: /sys/devices/platform/hidma-mgmt*/max_read_request 69 /sys/devices/platform/QCOM8060:*/max_read_request 70Date: Nov 2015 71KernelVersion: 4.4 72Contact: "Sinan Kaya <okaya@kernel.org>" 73Description: 74 Size of each read request. The value needs to be a power 75 of two and can be between 128 and 1024. 76 77What: /sys/devices/platform/hidma-mgmt*/max_wr_xactions 78 /sys/devices/platform/QCOM8060:*/max_wr_xactions 79Date: Nov 2015 80KernelVersion: 4.4 81Contact: "Sinan Kaya <okaya@kernel.org>" 82Description: 83 Contains a value between 0 and 31. Maximum number of 84 write transactions that can be issued back to back. 85 Choosing a higher number gives better performance but 86 can also cause performance reduction to other peripherals 87 sharing the same bus. 88 89 90What: /sys/devices/platform/hidma-mgmt*/max_write_request 91 /sys/devices/platform/QCOM8060:*/max_write_request 92Date: Nov 2015 93KernelVersion: 4.4 94Contact: "Sinan Kaya <okaya@kernel.org>" 95Description: 96 Size of each write request. The value needs to be a power 97 of two and can be between 128 and 1024. 98