linux-kernel - Re: [PATCH RFC net-next 02/13] dpll: Allow registering pin with firmware node

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Message-ID: <3E2869EC-61B3-40DA-98E2-CD9543424468@redhat.com>
Date: Sun, 14 Dec 2025 20:35:01 +0100
From: Ivan Vecera <ivecera@...hat.com>
To: Jiri Pirko <jiri@...nulli.us>
CC: netdev@...r.kernel.org, Andrew Lunn <andrew+netdev@...n.ch>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
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 Conor Dooley <conor+dt@...nel.org>,
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Subject: Re: [PATCH RFC net-next 02/13] dpll: Allow registering pin with firmware node

On December 12, 2025 12:25:12 PM GMT+01:00, Jiri Pirko <jiri@...nulli.us> wrote:
>Thu, Dec 11, 2025 at 08:47:45PM +0100, ivecera@...hat.com wrote:
>
>[..]
>
>>@@ -559,7 +563,8 @@ EXPORT_SYMBOL(dpll_netdev_pin_clear);
>>  */
>> struct dpll_pin *
>> dpll_pin_get(u64 clock_id, u32 pin_idx, struct module *module,
>>-	     const struct dpll_pin_properties *prop)
>>+	     const struct dpll_pin_properties *prop,
>>+	     struct fwnode_handle *fwnode)
>> {
>> 	struct dpll_pin *pos, *ret = NULL;
>> 	unsigned long i;
>>@@ -568,14 +573,15 @@ dpll_pin_get(u64 clock_id, u32 pin_idx, struct module *module,
>> 	xa_for_each(&dpll_pin_xa, i, pos) {
>> 		if (pos->clock_id == clock_id &&
>> 		    pos->pin_idx == pin_idx &&
>>-		    pos->module == module) {
>>+		    pos->module == module &&
>>+		    pos->fwnode == fwnode) {
>
>Is fwnode part of the key? Doesn't look to me like that. Then you can
>have a simple helper to set fwnode on struct dpll_pin *, and leave
>dpll_pin_get() out of this, no?

IMHO yes, because particular fwnode identifies exact dpll pin, so
I think it should be a part of the key.