summaryrefslogtreecommitdiff
path: root/Documentation/netlink
diff options
context:
space:
mode:
authorJiri Pirko <jiri@nvidia.com>2024-01-03 14:28:36 +0100
committerJakub Kicinski <kuba@kernel.org>2024-01-05 07:58:19 -0800
commit8a6286c1804e2c7144aef3154a0357c4b496e10b (patch)
tree6f7e86daa06fe9de97c1fb35703b151c56e14096 /Documentation/netlink
parent82e7b22f647202ecd8f25de2bd3f1276bbd34989 (diff)
dpll: expose fractional frequency offset value to user
Add a new netlink attribute to expose fractional frequency offset value for a pin. Add an op to get the value from the driver. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Acked-by: Vadim Fedorenko <vadim.fedorenko@linux.dev> Acked-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com> Link: https://lore.kernel.org/r/20240103132838.1501801-2-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'Documentation/netlink')
-rw-r--r--Documentation/netlink/specs/dpll.yaml11
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/netlink/specs/dpll.yaml b/Documentation/netlink/specs/dpll.yaml
index cf8abe1c0550..b14aed18065f 100644
--- a/Documentation/netlink/specs/dpll.yaml
+++ b/Documentation/netlink/specs/dpll.yaml
@@ -296,6 +296,16 @@ attribute-sets:
-
name: phase-offset
type: s64
+ -
+ name: fractional-frequency-offset
+ type: sint
+ doc: |
+ The FFO (Fractional Frequency Offset) between the RX and TX
+ symbol rate on the media associated with the pin:
+ (rx_frequency-tx_frequency)/rx_frequency
+ Value is in PPM (parts per million).
+ This may be implemented for example for pin of type
+ PIN_TYPE_SYNCE_ETH_PORT.
-
name: pin-parent-device
subset-of: pin
@@ -460,6 +470,7 @@ operations:
- phase-adjust-min
- phase-adjust-max
- phase-adjust
+ - fractional-frequency-offset
dump:
pre: dpll-lock-dumpit