linux-kernel - Re: [PATCH v4 1/4] dt-bindings: media: imx258: add bindings for IMX258 sensor

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Message-ID: <20200929091512.GF26842@paasikivi.fi.intel.com>
Date:   Tue, 29 Sep 2020 12:15:12 +0300
From:   Sakari Ailus <sakari.ailus@...ux.intel.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/4] dt-bindings: media: imx258: add bindings for
 IMX258 sensor

Hi Krzysztof,

On Wed, Sep 23, 2020 at 05:21:26PM +0200, Krzysztof Kozlowski wrote:
> Add bindings for the IMX258 camera sensor.  The bindings, just like the
> driver, are quite limited, e.g. do not support regulator supplies.
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> 
> ---
> 
> Changes since v3:
> 1. Document also two lane setup.
> 
> Changes since v2:
> 1. Remove clock-frequency, add reset GPIOs, add supplies.

Oops. I missed this one.

How does the driver know the appropriate clock frequency for the platform
if it's not in DT? The sensor supports a range of frequencies, not a single
frequency.

Could you add clock-frequency back?

-- 
Kind regards,

Sakari Ailus