RE: [RFC PATCH v7 5/8] ice: implement dpll interface to control cgu

From: Jiri Pirko <jiri@resnulli.us>
Sent: Tuesday, May 16, 2023 1:47 PM

Tue, May 16, 2023 at 11:22:37AM CEST, arkadiusz.kubalewski@intel.com wrote:

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From: Jiri Pirko <jiri@resnulli.us>
Sent: Monday, May 15, 2023 7:13 PM

Fri, Apr 28, 2023 at 02:20:06AM CEST, vadfed@meta.com wrote:

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+static const enum dpll_lock_status
+ice_dpll_status[__DPLL_LOCK_STATUS_MAX] = {
+	[ICE_CGU_STATE_INVALID] = DPLL_LOCK_STATUS_UNSPEC,
+	[ICE_CGU_STATE_FREERUN] = DPLL_LOCK_STATUS_UNLOCKED,
+	[ICE_CGU_STATE_LOCKED] = DPLL_LOCK_STATUS_CALIBRATING,

This is a bit confusing to me. You are locked, yet you report
calibrating? Wouldn't it be better to have:
DPLL_LOCK_STATUS_LOCKED
DPLL_LOCK_STATUS_LOCKED_HO_ACQ

?

Sure makes sense, will add this state.

Do you need "calibrating" then? I mean, the docs says:
 ``LOCK_STATUS_CALIBRATING``   dpll device calibrates to lock to the
                               source pin signal

Yet you do: [ICE_CGU_STATE_LOCKED] = DPLL_LOCK_STATUS_CALIBRATING
Seems like you should have:
[ICE_CGU_STATE_LOCKED] = DPLL_LOCK_STATUS_LOCKED
[ICE_CGU_STATE_LOCKED_HO_ACQ] = DPLL_LOCK_STATUS_LOCKED_HO_ACQ,

and remove DPLL_LOCK_STATUS_CALIBRATING as it would be unused?

Also, as a sidenote, could you use the whole names of enum value names
in documentation? Simple reason, greppability.

Yes, removed CALIBRATING.
Fixed the docs.

Thank you!
Arkadiusz

Thanks!

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+	[ICE_CGU_STATE_LOCKED_HO_ACQ] = DPLL_LOCK_STATUS_LOCKED,
+	[ICE_CGU_STATE_HOLDOVER] = DPLL_LOCK_STATUS_HOLDOVER,
+};

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