mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-18 16:44:27 +08:00
2d4103ae31
Bring in documentation for UltraSoc SMB driver. It simply describes the device, sysfs interface and the firmware bindings. Signed-off-by: Qi Liu <liuqi115@huawei.com> Signed-off-by: Junhao He <hejunhao3@huawei.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20230114101302.62320-3-hejunhao3@huawei.com
32 lines
1.1 KiB
Plaintext
32 lines
1.1 KiB
Plaintext
What: /sys/bus/coresight/devices/ultra_smb<N>/enable_sink
|
|
Date: January 2023
|
|
KernelVersion: 6.3
|
|
Contact: Junhao He <hejunhao3@huawei.com>
|
|
Description: (RW) Add/remove a SMB device from a trace path. There can be
|
|
multiple sources for a single SMB device.
|
|
|
|
What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/buf_size
|
|
Date: January 2023
|
|
KernelVersion: 6.3
|
|
Contact: Junhao He <hejunhao3@huawei.com>
|
|
Description: (RO) Shows the buffer size of each UltraSoc SMB device.
|
|
|
|
What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/buf_status
|
|
Date: January 2023
|
|
KernelVersion: 6.3
|
|
Contact: Junhao He <hejunhao3@huawei.com>
|
|
Description: (RO) Shows the value of UltraSoc SMB status register.
|
|
BIT(0) is zero means buffer is empty.
|
|
|
|
What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/read_pos
|
|
Date: January 2023
|
|
KernelVersion: 6.3
|
|
Contact: Junhao He <hejunhao3@huawei.com>
|
|
Description: (RO) Shows the value of UltraSoc SMB Read Pointer register.
|
|
|
|
What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/write_pos
|
|
Date: January 2023
|
|
KernelVersion: 6.3
|
|
Contact: Junhao He <hejunhao3@huawei.com>
|
|
Description: (RO) Shows the value of UltraSoc SMB Write Pointer register.
|