From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v5 2/2] [media] atmel-isc: DT binding for Image Sensor Controller driver Date: Mon, 20 Jun 2016 08:25:08 -0500 Message-ID: <20160620132508.GA32585@rob-hp-laptop> References: <1466153854-30272-1-git-send-email-songjun.wu@atmel.com> <1466153854-30272-3-git-send-email-songjun.wu@atmel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1466153854-30272-3-git-send-email-songjun.wu@atmel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Songjun Wu Cc: Mark Rutland , boris.brezillon@free-electrons.com, Pawel Moll , devicetree@vger.kernel.org, Ian Campbell , nicolas.ferre@atmel.com, linux-kernel@vger.kernel.org, alexandre.belloni@free-electrons.com, laurent.pinchart@ideasonboard.com, Kumar Gala , linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org On Fri, Jun 17, 2016 at 04:57:14PM +0800, Songjun Wu wrote: > DT binding documentation for ISC driver. > > Signed-off-by: Songjun Wu > --- > > Changes in v5: > - Add clock names. > > Changes in v4: > - Remove the isc clock nodes. > > Changes in v3: > - Remove the 'atmel,sensor-preferred'. > - Modify the isc clock node according to the Rob's remarks. > > Changes in v2: > - Remove the unit address of the endpoint. > - Add the unit address to the clock node. > - Avoid using underscores in node names. > - Drop the "0x" in the unit address of the i2c node. > - Modify the description of 'atmel,sensor-preferred'. > - Add the description for the ISC internal clock. > > .../devicetree/bindings/media/atmel-isc.txt | 64 ++++++++++++++++++++++ > 1 file changed, 64 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/atmel-isc.txt > > diff --git a/Documentation/devicetree/bindings/media/atmel-isc.txt b/Documentation/devicetree/bindings/media/atmel-isc.txt > new file mode 100644 > index 0000000..9558a77 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/atmel-isc.txt > @@ -0,0 +1,64 @@ > +Atmel Image Sensor Controller (ISC) > +---------------------------------------------- > + > +Required properties for ISC: > +- compatible > + Must be "atmel,sama5d2-isc". > +- reg > + Physical base address and length of the registers set for the device. > +- interrupts > + Should contain IRQ line for the ISC. > +- clocks > + List of clock specifiers, corresponding to entries in > + the clock-names property; > + Please refer to clock-bindings.txt. > +- clock-names > + Required elements: "hclock". What about the 2 other clocks in the example? > +- #clock-cells > + Should be 0. > +- clock-output-names > + Should contain the name of the clock driving the sensor master clock. State what the name is. > +- pinctrl-names, pinctrl-0 > + Please refer to pinctrl-bindings.txt. > + > +ISC supports a single port node with parallel bus. It should contain one > +'port' child node with child 'endpoint' node. Please refer to the bindings > +defined in Documentation/devicetree/bindings/media/video-interfaces.txt. > + > +Example: > +isc: isc@f0008000 { > + compatible = "atmel,sama5d2-isc"; > + reg = <0xf0008000 0x4000>; > + interrupts = <46 IRQ_TYPE_LEVEL_HIGH 5>; > + clocks = <&isc_clk>, <&iscck>, <&isc_gclk>; > + clock-names = "hclock", "iscck", "gck"; > + #clock-cells = <0>; > + clock-output-names = "isc-mck"; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_isc_base &pinctrl_isc_data_8bit &pinctrl_isc_data_9_10 &pinctrl_isc_data_11_12>; > + > + port { > + isc_0: endpoint { > + remote-endpoint = <&ov7740_0>; > + hsync-active = <1>; > + vsync-active = <0>; > + pclk-sample = <1>; > + }; > + }; > +}; > + > +i2c1: i2c@fc028000 { > + ov7740: camera@21 { > + compatible = "ovti,ov7740"; Indentation is still wrong here... > + reg = <0x21>; > + clocks = <&isc>; > + clock-names = "xvclk"; > + assigned-clocks = <&isc>; > + assigned-clock-rates = <24000000>; > + > + port { > + ov7740_0: endpoint { > + remote-endpoint = <&isc_0>; > + }; > + }; > +}; > -- > 2.7.4 >