netdev - Re: [RFC PATCH v3 1/6] dpll: Add DPLL framework base functions

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Date:   Wed, 12 Oct 2022 21:15:23 +0100
From:   Vadim Fedorenko <vfedorenko@...ek.ru>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-clk@...r.kernel.org, Vadim Fedorenko <vadfed@...com>
Subject: Re: [RFC PATCH v3 1/6] dpll: Add DPLL framework base functions

On 12.10.2022 11:47, Jiri Pirko wrote:
> Mon, Oct 10, 2022 at 03:17:59AM CEST, vfedorenko@...ek.ru wrote:
>> From: Vadim Fedorenko <vadfed@...com>
>>
>> DPLL framework is used to represent and configure DPLL devices
>> in systems. Each device that has DPLL and can configure sources
>> and outputs can use this framework.
>>
>> Signed-off-by: Vadim Fedorenko <vadfed@...com>
>> Co-developed-by: Jakub Kicinski <kuba@...nel.org>
>> Co-developed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>
> 
> 
> [...]
> 
> 
>> +struct dpll_device *dpll_device_alloc(struct dpll_device_ops *ops, const char *name,
>> +				      int sources_count, int outputs_count, void *priv)
> 
> Having constant array of "pins" would not work for SyncE. For example in
> mlxsw driver, netdevs can appear and disappear within the device
> lifetime (for example port splits, linecard provision). We need to
> register/unregister pins dynamically.
> 
Yes, I agree, and we are working to implement pin object with dynamic 
attach/detach or reg/unreg functions.