diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs b/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs index 1666340820f7..d1b3a95a5518 100644 --- a/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs +++ b/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs @@ -79,3 +79,48 @@ Description: indicates a lane. crc_err_cnt: (RO) CRC err count on this port. ============= ==== ============================================= + +What: /sys/devices/platform/HISI04Bx:00/used_types +Date: August 2024 +KernelVersion: 6.12 +Contact: Huisong Li <lihuisong@huawei.com> +Description: + This interface is used to show all HCCS types used on the + platform, like, HCCS-v1, HCCS-v2 and so on. + +What: /sys/devices/platform/HISI04Bx:00/available_inc_dec_lane_types +What: /sys/devices/platform/HISI04Bx:00/dec_lane_of_type +What: /sys/devices/platform/HISI04Bx:00/inc_lane_of_type +Date: August 2024 +KernelVersion: 6.12 +Contact: Huisong Li <lihuisong@huawei.com> +Description: + These interfaces under /sys/devices/platform/HISI04Bx/ are + used to support the low power consumption feature of some + HCCS types by changing the number of lanes used. The interfaces + changing the number of lanes used are 'dec_lane_of_type' and + 'inc_lane_of_type' which require root privileges. These + interfaces aren't exposed if no HCCS type on platform support + this feature. Please note that decreasing lane number is only + allowed if all the specified HCCS ports are not busy. + + The low power consumption interfaces are as follows: + + ============================= ==== ================================ + available_inc_dec_lane_types: (RO) available HCCS types (string) to + increase and decrease the number + of lane used, e.g. HCCS-v2. + dec_lane_of_type: (WO) input HCCS type supported + decreasing lane to decrease the + used lane number of all specified + HCCS type ports on platform to + the minimum. + You can query the 'cur_lane_num' + to get the minimum lane number + after executing successfully. + inc_lane_of_type: (WO) input HCCS type supported + increasing lane to increase the + used lane number of all specified + HCCS type ports on platform to + the full lane state. + ============================= ==== ================================ |