[PATCH 5/5] doc: soc: hisilicon: kunpeng_hccs: add low power interface description for HCCS

Huisong Li
2024-07-18T07:20:50Z

This patch add low power interface description for HCCS.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
---
.../sysfs-devices-platform-kunpeng_hccs | 26 +++++++++++++++++++
1 file changed, 26 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs b/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs
index 1666340820f7..28bffb79e742 100644
--- a/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs
+++ b/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs
@@ -79,3 +79,29 @@ Description:
indicates a lane.
crc_err_cnt: (RO) CRC err count on this port.
============= ==== =============================================
+
+What: /sys/devices/platform/HISI04Bx:00/used_typs
+Date: July 2024
+KernelVersion: 6.11
+Contact: Huisong Li <lihuisong@huawei.com>
+Description:
+ This interface is used to show all HCCS type used on current
+ platform, like, HCCS-v1, HCCS-v2 and so on.
+
+What: /sys/devices/platform/HISI04Bx:00/support_pm_types
+What: /sys/devices/platform/HISI04Bx:00/dec_lane
+What: /sys/devices/platform/HISI04Bx:00/inc_lane
+Date: July 2024
+KernelVersion: 6.11
+Contact: Huisong Li <lihuisong@huawei.com>
+Description:
+ This series interface under /sys/devices/platform/HISI04Bx/
+ directory is used to support low power of some HCCS type
+ by operating their lane number. The 'inc_lane' and 'dec_lane'
+ are just exposed with root privilege and write-onely attributes
+ when there is the HCCS type supported low power operation.
+ The 'support_pm_types' with read-only attributes is used to
+ expose the HCCS type supported PM. The available input of
+ 'inc_lane' and 'dec_lane' is from 'support_pm_types'.
+ Note: allow to decrease lane only when all specified HCCS ports
+ are not busy.
--
2.22.0