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From: Cory Keitz <ckeitz@amazon.com>
To: <dumitru.ceclan@analog.com>
Cc: "Tomi Valkeinen" <tomi.valkeinen+renesas@ideasonboard.com>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Sakari Ailus" <sakari.ailus@linux.intel.com>,
	"Laurent Pinchart" <laurent.pinchart@ideasonboard.com>,
	"Julien Massot" <julien.massot@collabora.com>,
	"Rob Herring" <robh@kernel.org>,
	"Niklas Söderlund" <niklas.soderlund@ragnatech.se>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org, linux-gpio@vger.kernel.org,
	linux-staging@lists.linux.dev, mitrutzceclan@gmail.com,
	"Cosmin Tanislav" <demonsingur@gmail.com>
Subject: Re: [PATCH RESEND v8 14/21] media: i2c: add Maxim GMSL2/3 deserializer framework
Date: Tue, 10 Mar 2026 09:35:25 -0700	[thread overview]
Message-ID: <abBITdEEs4tJCQWa@bcd074ae11bb> (raw)
In-Reply-To: <20251208-gmsl2-3_serdes-v8-14-7b8d457e2e04@analog.com>

On Mon, Dec 08, 2025 at 04:13:06PM +0200, Dumitru Ceclan via B4 Relay wrote:
> +#define MAX_DES_LINK_FREQUENCY_MIN		100000000ull
> +#define MAX_DES_LINK_FREQUENCY_DEFAULT		750000000ull
> +#define MAX_DES_LINK_FREQUENCY_MAX		1250000000ull

Related to my comments on patch 16 [1], I believe this should be set
differently between DPHY and CPHY. As I test more cameras I've patched
this to allow CPHY link frequencies up to 2500MHz. I'm also wondering
whether these should be driver-specific rather than defined at the
framework level to allow for higher capacities in future silicon.

[1] https://lore.kernel.org/linux-media/aaxWATynXaVFglvS@bcd074ae11bb/

--
R,
Cory

      parent reply	other threads:[~2026-03-10 16:35 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20251208-gmsl2-3_serdes-v8-0-7b8d457e2e04@analog.com>
     [not found] ` <20251208-gmsl2-3_serdes-v8-16-7b8d457e2e04@analog.com>
2026-03-07 17:03   ` [PATCH RESEND v8 16/21] media: i2c: maxim-serdes: add MAX96724 driver Cory Keitz
     [not found] ` <20251208-gmsl2-3_serdes-v8-14-7b8d457e2e04@analog.com>
2026-03-10 16:35   ` Cory Keitz [this message]

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