From: Jakub Kicinski <kuba@kernel.org>
To: "Kubalewski, Arkadiusz" <arkadiusz.kubalewski@intel.com>
Cc: Jiri Pirko <jiri@resnulli.us>,
Maciek Machnikowski <maciek@machnikowski.net>,
'Vadim Fedorenko' <vfedorenko@novek.ru>,
'Jonathan Lemon' <jonathan.lemon@gmail.com>,
"'Paolo Abeni'" <pabeni@redhat.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>
Subject: Re: [RFC PATCH v4 0/4] Create common DPLL/clock configuration API
Date: Tue, 10 Jan 2023 12:05:49 -0800 [thread overview]
Message-ID: <20230110120549.4d764609@kernel.org> (raw)
In-Reply-To: <DM6PR11MB46571573010AB727E1BE99AE9BFE9@DM6PR11MB4657.namprd11.prod.outlook.com>
On Mon, 9 Jan 2023 14:43:01 +0000 Kubalewski, Arkadiusz wrote:
> This is a simplified network switch board example.
> It has 2 synchronization channels, where each channel:
> - provides clk to 8 PHYs driven by separated MAC chips,
> - controls 2 DPLLs.
>
> Basically only given FW has control over its PHYs, so also a control over it's
> MUX inputs.
> All external sources are shared between the channels.
>
> This is why we believe it is not best idea to enclose multiple DPLLs with one
> object:
> - sources are shared even if DPLLs are not a single synchronizer chip,
> - control over specific MUX type input shall be controllable from different
> driver/firmware instances.
>
> As we know the proposal of having multiple DPLLs in one object was a try to
> simplify currently implemented shared pins. We fully support idea of having
> interfaces as simple as possible, but at the same time they shall be flexible
> enough to serve many use cases.
I must be missing context from other discussions but what is this
proposal trying to solve? Well implemented shared pins is all we need.
next prev parent reply other threads:[~2023-01-10 20:06 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-29 21:37 [RFC PATCH v4 0/4] Create common DPLL/clock configuration API Vadim Fedorenko
2022-11-29 21:37 ` [RFC PATCH v4 1/4] dpll: add dpll_attr/dpll_pin_attr helper classes Vadim Fedorenko
2022-11-29 21:37 ` [RFC PATCH v4 2/4] dpll: Add DPLL framework base functions Vadim Fedorenko
2022-11-30 15:21 ` Jiri Pirko
2022-11-30 16:23 ` Jiri Pirko
2022-12-23 16:45 ` Kubalewski, Arkadiusz
2023-01-02 12:28 ` Jiri Pirko
2022-11-30 16:37 ` Jiri Pirko
2022-12-02 11:27 ` Kubalewski, Arkadiusz
2022-12-02 12:39 ` Jiri Pirko
2022-12-02 14:54 ` Kubalewski, Arkadiusz
2022-12-02 16:15 ` Jiri Pirko
[not found] ` <20221202212206.3619bd5f@kernel.org>
2022-12-05 10:32 ` Jiri Pirko
2022-12-06 0:19 ` Jakub Kicinski
2022-12-06 8:50 ` Jiri Pirko
2022-12-06 17:27 ` Jakub Kicinski
2022-12-07 13:10 ` Jiri Pirko
2022-12-07 16:59 ` Jakub Kicinski
2022-12-08 8:14 ` Jiri Pirko
2022-12-08 16:19 ` Jakub Kicinski
2022-12-08 16:33 ` Jiri Pirko
2022-12-08 17:05 ` Jakub Kicinski
2022-12-09 9:29 ` Jiri Pirko
2022-12-09 16:19 ` Jakub Kicinski
2022-12-12 13:36 ` Jiri Pirko
2022-12-13 18:08 ` Kubalewski, Arkadiusz
2022-12-14 7:32 ` Jiri Pirko
2022-11-29 21:37 ` [RFC PATCH v4 3/4] dpll: documentation on DPLL subsystem interface Vadim Fedorenko
2022-12-19 9:13 ` Paolo Abeni
2023-01-12 13:45 ` Kubalewski, Arkadiusz
2022-11-29 21:37 ` [RFC PATCH v4 4/4] ptp_ocp: implement DPLL ops Vadim Fedorenko
2022-11-30 12:41 ` Jiri Pirko
2022-12-02 11:27 ` Kubalewski, Arkadiusz
2022-12-02 12:48 ` Jiri Pirko
2022-12-02 14:39 ` Kubalewski, Arkadiusz
2022-12-02 16:20 ` Jiri Pirko
2022-12-08 0:35 ` Kubalewski, Arkadiusz
2022-12-08 8:19 ` Jiri Pirko
2022-12-07 2:33 ` Jakub Kicinski
2022-12-07 13:19 ` Jiri Pirko
[not found] ` <20221207090524.3f562eeb@kernel.org>
2022-12-08 11:22 ` Jiri Pirko
2022-12-09 0:36 ` Jakub Kicinski
2022-12-09 9:32 ` Jiri Pirko
2022-11-30 12:32 ` [RFC PATCH v4 0/4] Create common DPLL/clock configuration API Jiri Pirko
2022-12-02 11:27 ` Kubalewski, Arkadiusz
2022-12-02 16:12 ` Jiri Pirko
2022-12-07 2:47 ` Jakub Kicinski
2022-12-07 14:09 ` netdev.dump
2022-12-07 23:21 ` Jakub Kicinski
2022-12-08 11:28 ` Jiri Pirko
2022-12-09 0:39 ` Jakub Kicinski
2022-12-09 0:56 ` Kubalewski, Arkadiusz
2022-12-08 18:08 ` Maciek Machnikowski
2022-12-09 11:07 ` Jiri Pirko
2022-12-09 14:09 ` Maciek Machnikowski
2022-12-09 16:31 ` Jakub Kicinski
2022-12-09 17:11 ` Maciek Machnikowski
2022-12-12 13:58 ` Jiri Pirko
2023-01-09 14:43 ` Kubalewski, Arkadiusz
2023-01-09 16:30 ` Jiri Pirko
2023-01-10 10:54 ` Kubalewski, Arkadiusz
2023-01-10 14:28 ` Jiri Pirko
[not found] ` <645a5bfd-0092-2f39-0ff2-3ffb27ccf8fe@machnikowski.net>
2023-01-11 14:17 ` Kubalewski, Arkadiusz
2023-01-11 14:40 ` Maciek Machnikowski
2023-01-11 15:30 ` Kubalewski, Arkadiusz
2023-01-11 15:54 ` Maciek Machnikowski
2023-01-11 16:27 ` Kubalewski, Arkadiusz
2023-01-10 20:05 ` Jakub Kicinski [this message]
2023-01-11 8:19 ` Jiri Pirko
2023-01-11 14:16 ` Kubalewski, Arkadiusz
2023-01-11 15:04 ` Jiri Pirko
2023-01-11 15:30 ` Kubalewski, Arkadiusz
2023-01-11 16:14 ` Jiri Pirko
2023-01-12 12:15 ` Kubalewski, Arkadiusz
2023-01-12 14:43 ` Jiri Pirko
2022-12-09 0:46 ` Kubalewski, Arkadiusz
2022-12-07 14:51 ` Jiri Pirko
[not found] ` <20221207091946.3115742f@kernel.org>
2022-12-08 12:02 ` Jiri Pirko
2022-12-09 0:54 ` Jakub Kicinski
2022-12-08 18:23 ` Kubalewski, Arkadiusz
2022-12-08 0:27 ` Kubalewski, Arkadiusz
2022-12-08 11:58 ` Jiri Pirko
2022-12-08 23:05 ` Kubalewski, Arkadiusz
2022-12-09 10:01 ` Jiri Pirko
2023-01-12 12:23 ` Kubalewski, Arkadiusz
2023-01-12 14:50 ` Jiri Pirko
2023-01-12 19:09 ` Jakub Kicinski
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