From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0286AC5ACBF for ; Fri, 13 Mar 2020 12:20:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DB1762074B for ; Fri, 13 Mar 2020 12:20:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726676AbgCMMUv (ORCPT ); Fri, 13 Mar 2020 08:20:51 -0400 Received: from retiisi.org.uk ([95.216.213.190]:33938 "EHLO hillosipuli.retiisi.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726534AbgCMMUv (ORCPT ); Fri, 13 Mar 2020 08:20:51 -0400 Received: from valkosipuli.localdomain (valkosipuli.retiisi.org.uk [IPv6:2a01:4f9:c010:4572::80:2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by hillosipuli.retiisi.org.uk (Postfix) with ESMTPS id 6E41A634C87; Fri, 13 Mar 2020 14:19:49 +0200 (EET) Received: from sailus by valkosipuli.localdomain with local (Exim 4.92) (envelope-from ) id 1jCjI5-0001il-Np; Fri, 13 Mar 2020 14:19:49 +0200 Date: Fri, 13 Mar 2020 14:19:49 +0200 From: Sakari Ailus To: Robert Foss Cc: Dongchun Zhu , Fabio Estevam , Andy Shevchenko , Tomasz Figa , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [v2 1/3] media: dt-bindings: ov8856: Document YAML bindings Message-ID: <20200313121949.GD5730@valkosipuli.retiisi.org.uk> References: <20200313110350.10864-1-robert.foss@linaro.org> <20200313110350.10864-2-robert.foss@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200313110350.10864-2-robert.foss@linaro.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hi Robert, On Fri, Mar 13, 2020 at 12:03:48PM +0100, Robert Foss wrote: > From: Dongchun Zhu > > This patch adds documentation of device tree in YAML schema for the > OV8856 CMOS image sensor. > > Signed-off-by: Dongchun Zhu > Signed-off-by: Robert Foss > --- > > - Changes since v4: > * Fabio: Change reset-gpio to GPIO_ACTIVE_LOW, explain in description > * Add clock-lanes property to example > * robher: Fix syntax error in devicetree example > > - Changes since v3: > * robher: Fix syntax error > * robher: Removed maxItems > * Fixes yaml 'make dt-binding-check' errors > > - Changes since v2: > Fixes comments from from Andy, Tomasz, Sakari, Rob. > * Convert text documentation to YAML schema. > > - Changes since v1: > Fixes comments from Sakari, Tomasz > * Add clock-frequency and link-frequencies in DT > > .../devicetree/bindings/media/i2c/ov8856.yaml | 133 ++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 134 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/i2c/ov8856.yaml > > diff --git a/Documentation/devicetree/bindings/media/i2c/ov8856.yaml b/Documentation/devicetree/bindings/media/i2c/ov8856.yaml > new file mode 100644 > index 000000000000..f5cb9add9277 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/i2c/ov8856.yaml > @@ -0,0 +1,133 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +# Copyright (c) 2019 MediaTek Inc. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/media/i2c/ov8856.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Omnivision OV8856 CMOS Sensor Device Tree Bindings > + > +maintainers: > + - Ben Kao Is Ben aware of this? > + - Dongchun Zhu > + > +description: |- > + The Omnivision OV8856 is a high performance, 1/4-inch, 8 megapixel, CMOS > + image sensor that delivers 3264x2448 at 30fps. It provides full-frame, > + sub-sampled, and windowed 10-bit MIPI images in various formats via the > + Serial Camera Control Bus (SCCB) interface. This chip is programmable > + through I2C and two-wire SCCB. The sensor output is available via CSI-2 > + serial data output (up to 4-lane). > + > +properties: > + compatible: > + const: ovti,ov8856 > + > + reg: > + maxItems: 1 > + > + clocks: > + maxItems: 1 > + > + clock-names: > + description: > + Input clock for the sensor. > + items: > + - const: xvclk > + > + clock-frequency: > + description: > + Frequency of the xvclk clock in Hertz. > + > + dovdd-supply: > + description: > + Definition of the regulator used as interface power supply. > + > + avdd-supply: > + description: > + Definition of the regulator used as analog power supply. > + > + dvdd-supply: > + description: > + Definition of the regulator used as digital power supply. > + > + reset-gpios: > + description: > + The phandle and specifier for the GPIO that controls sensor reset. > + This corresponds to the hardware pin XSHUTDOWN which is physically > + active low. > + > + port: > + type: object > + additionalProperties: false > + description: > + A node containing input and output port nodes with endpoint definitions > + as documented in > + Documentation/devicetree/bindings/media/video-interfaces.txt > + > + properties: > + endpoint: > + type: object > + > + properties: > + clock-lanes: > + maxItems: 1 > + > + data-lanes: > + maxItems: 1 > + > + remote-endpoint: true > + > + required: > + - clock-lanes Do you need the clock-lanes property, i.e. does the device support lane reordering? If not, it should be removed. > + - data-lanes > + - remote-endpoint > + > + required: > + - endpoint > + > +required: > + - compatible > + - reg > + - clocks > + - clock-names > + - clock-frequency > + - dovdd-supply > + - avdd-supply > + - dvdd-supply > + - reset-gpios > + - port > + > +additionalProperties: false > + > +examples: > + - | > + #include > + #include > + > + ov8856: camera-sensor@10 { > + compatible = "ovti,ov8856"; > + reg = <0x10>; > + reset-gpios = <&pio 111 GPIO_ACTIVE_LOW>; > + pinctrl-names = "default"; > + pinctrl-0 = <&clk_24m_cam>; > + > + clocks = <&clock_camcc CAM_CC_MCLK0_CLK>; > + clock-names = "xvclk"; > + clock-frequency = <19200000>; > + > + avdd-supply = <&mt6358_vcama2_reg>; > + dvdd-supply = <&mt6358_vcamd_reg>; > + dovdd-supply = <&mt6358_vcamio_reg>; > + > + port { > + wcam_out: endpoint { > + remote-endpoint = <&mipi_in_wcam>; > + clock-lanes = <0>; > + data-lanes = <1 2 3 4>; > + link-frequencies = /bits/ 64 <360000000 180000000>; > + }; > + }; > + }; > + > +... > \ No newline at end of file > diff --git a/MAINTAINERS b/MAINTAINERS > index a6fbdf354d34..0f99e863978a 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -12355,6 +12355,7 @@ L: linux-media@vger.kernel.org > T: git git://linuxtv.org/media_tree.git > S: Maintained > F: drivers/media/i2c/ov8856.c > +F: Documentation/devicetree/bindings/media/i2c/ov8856.yaml > > OMNIVISION OV9650 SENSOR DRIVER > M: Sakari Ailus -- Regards, Sakari Ailus