From mboxrd@z Thu Jan 1 00:00:00 1970 From: Manivannan Sadhasivam Subject: Re: [PATCH] dt-bindings: media: i2c: Fix external clock frequency for OV5645 Date: Wed, 14 Nov 2018 17:36:52 +0530 Message-ID: <20181114120652.GA26112@Mani-XPS-13-9360> References: <20181114103935.24559-1-manivannan.sadhasivam@linaro.org> <20181114105712.j5jkspfasujiyqzs@valkosipuli.retiisi.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20181114105712.j5jkspfasujiyqzs@valkosipuli.retiisi.org.uk> Sender: linux-kernel-owner@vger.kernel.org To: Sakari Ailus Cc: mchehab@kernel.org, robh+dt@kernel.org, todor.tomov@linaro.org, hansverk@cisco.com, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org On Wed, Nov 14, 2018 at 12:57:12PM +0200, Sakari Ailus wrote: > Hi Manivannan, > > On Wed, Nov 14, 2018 at 04:09:35PM +0530, Manivannan Sadhasivam wrote: > > Commit "4adb0a0432f4 media: ov5645: Supported external clock is 24MHz" > > modified the external clock frequency to be 24MHz instead of the > > 23.88MHz in driver. Hence, make the same change in corresponding bindings > > doc and mention the acceptable tolerance. > > > > Signed-off-by: Manivannan Sadhasivam > > --- > > 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 fd7aec9f8e24..b155583469a4 100644 > > --- a/Documentation/devicetree/bindings/media/i2c/ov5645.txt > > +++ b/Documentation/devicetree/bindings/media/i2c/ov5645.txt > > @@ -8,7 +8,8 @@ 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: Frequency of the xclk clock. Should be 24MHz with 1% > > + acceptable tolerance. > > DT bindings are for documenting the hardware, not the driver implementation. > The sensor supports a range AFAIU, not a specific frequency. > Agree! That's my bad. > The bit below seems good. > Okay. Will remove the above change and send v2. Thanks, Mani > > - 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 +38,7 @@ Example: > > > > clocks = <&clks 200>; > > clock-names = "xclk"; > > - clock-frequency = <23880000>; > > + clock-frequency = <24000000>; > > > > vdddo-supply = <&camera_dovdd_1v8>; > > vdda-supply = <&camera_avdd_2v8>; > > -- > > 2.17.1 > > > > -- > Sakari Ailus > e-mail: sakari.ailus@iki.fi