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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jEhNz-00079u-8f; Wed, 18 Mar 2020 22:42:03 +0000 Received: from perceval.ideasonboard.com ([213.167.242.64]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jEhNw-00079M-LD for linux-arm-kernel@lists.infradead.org; Wed, 18 Mar 2020 22:42:02 +0000 Received: from pendragon.ideasonboard.com (81-175-216-236.bb.dnainternet.fi [81.175.216.236]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 7603A5F; Wed, 18 Mar 2020 23:33:17 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1584570797; bh=9m1GSY/Y0chTObQdUK2o5uaKcyUnJ2AtolcRgJvxcRI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=RqALiKWBqa3oEj6gO5QaKcF2+D0Q54zVl+tnIJcm64PY3+pAw74SREjMR0VoUXZl7 Bxhj8v/Gih5fORg6/cH+QmbyhmHQxT1lNDBcMZe9bL+6oiBzPs4Q7CtlzJRtILAioN vFQ69xXygRCGcB2oHWZgVtjBQL7nPdGcBH8z+xzs= Date: Thu, 19 Mar 2020 00:33:11 +0200 From: Laurent Pinchart To: "Lad, Prabhakar" Subject: Re: [PATCH v3 1/4] media: dt-bindings: media: i2c: Switch to assigned-clock-rates Message-ID: <20200318223311.GH24538@pendragon.ideasonboard.com> References: <1584133954-6953-1-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> <1584133954-6953-2-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> <20200313212012.GL4751@pendragon.ideasonboard.com> <20200313212717.GO4751@pendragon.ideasonboard.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200318_154200_850771_AF78D240 X-CRM114-Status: GOOD ( 20.47 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , "devicetree@vger.kernel.org" , Pengutronix Kernel Team , Ezequiel Garcia , Sascha Hauer , Magnus Damm , Prabhakar Mahadev Lad , "linux-kernel@vger.kernel.org" , "linux-renesas-soc@vger.kernel.org" , Rob Herring , Geert Uytterhoeven , NXP Linux Team , Sakari Ailus , Shawn Guo , Mauro Carvalho Chehab , Fabio Estevam , "linux-arm-kernel@lists.infradead.org" , "linux-media@vger.kernel.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Prabhakar, On Wed, Mar 18, 2020 at 08:13:00PM +0000, Lad, Prabhakar wrote: > On Fri, Mar 13, 2020 at 9:27 PM Laurent Pinchart wrote: > > On Fri, Mar 13, 2020 at 09:25:01PM +0000, Prabhakar Mahadev Lad wrote: > >> On Sent: 13 March 2020 21:20, Laurent Pinchart wrote: > >>> On Fri, Mar 13, 2020 at 09:12:31PM +0000, Lad Prabhakar wrote: > >>>> Use assigned-clock-rates to specify the clock rate. Also mark > >>>> clock-frequency property as deprecated. > >>> > >>> I would phrase it the other way around, this patch mainly deprecates clock- > >>> frequency, and as a side effect recommends usage of assigned-clock-rates. > >>> > >>> "Deprecate usage of the clock-frequency propertly. The preferred method > >>> to set clock rates is to use assigned-clock-rates." > >> > >> Agreed will do that. > >> > >>>> Signed-off-by: Lad Prabhakar > >>>> --- > >>>> Documentation/devicetree/bindings/media/i2c/ov5645.txt | 5 +++-- > >>>> 1 file changed, 3 insertions(+), 2 deletions(-) > >>>> > >>>> diff --git a/Documentation/devicetree/bindings/media/i2c/ov5645.txt > >>>> b/Documentation/devicetree/bindings/media/i2c/ov5645.txt > >>>> index 72ad992..e62fe82 100644 > >>>> --- a/Documentation/devicetree/bindings/media/i2c/ov5645.txt > >>>> +++ b/Documentation/devicetree/bindings/media/i2c/ov5645.txt > >>>> @@ -8,7 +8,7 @@ Required Properties: > >>>> - compatible: Value should be "ovti,ov5645". > >>>> - clocks: Reference to the xclk clock. > >>>> - clock-names: Should be "xclk". > >>>> -- clock-frequency: Frequency of the xclk clock. > >>>> +- clock-frequency (deprecated): Frequency of the xclk clock. > >>> > >>> I would drop this completely. Drivers need to ensure backward compatibility, > >>> but DT bindings should only document the latest version, the history is > >>> available in git. > >> > >> Sure will drop it. > >> > >>> Reviewed-by: Laurent Pinchart > >>> > >>> While at it, can I enlist you to convert these bindings to yaml ? :-) > >>> > >> Sure will do the honours , will make sure yaml patch is ontop of this patch too. > > Shall I enlist you as the maintainer in the json-schema ? > dt_binding_check says 'maintainers' is a required property. Do you want to be the new maintainer ? :-) Sakari is maintaining sensor drivers (in his spare time though) so maybe he could be listed in the DT bindings too if he wants. Otherwise, I could do it. > > Thank you :-) > > > >>>> - enable-gpios: Chip enable GPIO. Polarity is GPIO_ACTIVE_HIGH. This corresponds > >>>> to the hardware pin PWDNB which is physically active low. > >>>> - reset-gpios: Chip reset GPIO. Polarity is GPIO_ACTIVE_LOW. This corresponds to > >>>> @@ -37,7 +37,8 @@ Example: > >>>> > >>>> clocks = <&clks 200>; > >>>> clock-names = "xclk"; > >>>> -clock-frequency = <24000000>; > >>>> +assigned-clocks = <&clks 200>; > >>>> +assigned-clock-rates = <24000000>; > >>>> > >>>> vdddo-supply = <&camera_dovdd_1v8>; > >>>> vdda-supply = <&camera_avdd_2v8>; -- Regards, Laurent Pinchart _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel