From patchwork Fri Mar 13 11:03:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Foss X-Patchwork-Id: 203364 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=-14.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 35BF9C5ACBF for ; Fri, 13 Mar 2020 11:04:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 059AB20724 for ; Fri, 13 Mar 2020 11:04:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="o7+OtpJ4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726664AbgCMLEM (ORCPT ); Fri, 13 Mar 2020 07:04:12 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:34546 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726595AbgCMLEM (ORCPT ); Fri, 13 Mar 2020 07:04:12 -0400 Received: by mail-wr1-f67.google.com with SMTP id z15so11524594wrl.1 for ; Fri, 13 Mar 2020 04:04:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ncw+eyWjRsQTeyJkRY9efqnjsTYXp1B+wwJAeTaYAUY=; b=o7+OtpJ4HguHvdXj6h/irlmhIyldJOZUxqelnNp1uJAiYtI0Ye/qKEhlAJSp5BT1/B g43HgPrOPFnot+78wWNNYRZEc0EuOxsOqVIXa7h4HRTSWvKcE8R7eBsdsW4+CPHqozSn hgfOpvGOZfScg4cuaOcJ04DB9E/PQX31nOumHbEprYeJp4rVEpOfrzhINOrQtuMzKC7h b/NozewPPpE2p2O43oW055R2XztYhoXJU0QhOilo5YppbcU4o/9brcU91NJlqzUaf/Ew XJ5D82lDLYQXm+TFlAYunv2VJwInnlKQTWhNYxINQZ0MgowfBPfTQsO/1ITq/cRmng1X JI+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ncw+eyWjRsQTeyJkRY9efqnjsTYXp1B+wwJAeTaYAUY=; b=T2Nxrw6E5TFKFHmgrGsrj65gsKjZIlpwP9XFRCEhnnhGxeC9CFIx5IIFL9EW/F+3Wq SVjjR06fO9qn3hoWRSRhxL9dIYCc3ro1Vv6xxs7UvxbYlQ2ARkVjDs/1rw148dBeetXL CyHMPc+pGiTyT4iBqTuUQOq7oMhqlZr+99Xh4yZCBHWY7Q0vwuTY4mKKW+GK3JWX3TtP 3DrLZ6XRPpKXwt2aWdGeQyatEDNvH3iSVkkB2k/QVdulWfGHsf2gBym5N6AgRyk4xxss XD54ygk8uDPZh5gog6i6L51zT9y7yL5Q0T8Oc0U7gJD0Xmqa2mkh6lasb4WOfZ7ewa/4 oL4w== X-Gm-Message-State: ANhLgQ17SSv/SGdrCRX64JXIzY2+jNpQNoDw+ycPBmYogYreIDv4836h XpRufbQ95tWhe51CDPdF8yOZIA== X-Google-Smtp-Source: ADFU+vv07bRZwHFbQJV+QSjjmMIWLyvDlox4QCBogfbwZ9y18BLQBMA3c1lpCF+57gtUxJY4G2IWVQ== X-Received: by 2002:adf:9d8d:: with SMTP id p13mr12131719wre.360.1584097449459; Fri, 13 Mar 2020 04:04:09 -0700 (PDT) Received: from xps7590.local ([2a02:2450:102f:13b8:c814:5be4:577e:3bd5]) by smtp.gmail.com with ESMTPSA id r23sm23578052wrr.93.2020.03.13.04.04.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Mar 2020 04:04:08 -0700 (PDT) From: Robert Foss To: Dongchun Zhu , Fabio Estevam , Andy Shevchenko , Sakari Ailus , Tomasz Figa , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Robert Foss Subject: [v2 1/3] media: dt-bindings: ov8856: Document YAML bindings Date: Fri, 13 Mar 2020 12:03:48 +0100 Message-Id: <20200313110350.10864-2-robert.foss@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200313110350.10864-1-robert.foss@linaro.org> References: <20200313110350.10864-1-robert.foss@linaro.org> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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 + - 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 + - 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 From patchwork Fri Mar 13 11:03:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Foss X-Patchwork-Id: 203365 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 AFDB0C10DCE for ; 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Fri, 13 Mar 2020 04:04:12 -0700 (PDT) Received: from xps7590.local ([2a02:2450:102f:13b8:c814:5be4:577e:3bd5]) by smtp.gmail.com with ESMTPSA id r23sm23578052wrr.93.2020.03.13.04.04.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Mar 2020 04:04:11 -0700 (PDT) From: Robert Foss To: Dongchun Zhu , Fabio Estevam , Andy Shevchenko , Sakari Ailus , Tomasz Figa , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Robert Foss Subject: [v2 3/3] media: ov8856: Implement sensor module revision identification Date: Fri, 13 Mar 2020 12:03:50 +0100 Message-Id: <20200313110350.10864-4-robert.foss@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200313110350.10864-1-robert.foss@linaro.org> References: <20200313110350.10864-1-robert.foss@linaro.org> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Query the sensor for its module revision, and compare it to known revisions. Currently only the '1B' revision has been added. Signed-off-by: Robert Foss --- drivers/media/i2c/ov8856.c | 54 +++++++++++++++++++++++++++++++++----- 1 file changed, 48 insertions(+), 6 deletions(-) diff --git a/drivers/media/i2c/ov8856.c b/drivers/media/i2c/ov8856.c index db61eed223e8..39662d3d86dd 100644 --- a/drivers/media/i2c/ov8856.c +++ b/drivers/media/i2c/ov8856.c @@ -34,6 +34,18 @@ #define OV8856_MODE_STANDBY 0x00 #define OV8856_MODE_STREAMING 0x01 +/* define 1B module revision */ +#define OV8856_1B_MODULE 0x02 + +/* the OTP read-out buffer is at 0x7000 and 0xf is the offset + * of the byte in the OTP that means the module revision + */ +#define OV8856_MODULE_REVISION 0x700f +#define OV8856_OTP_MODE_CTRL 0x3d84 +#define OV8856_OTP_LOAD_CTRL 0x3d81 +#define OV8856_OTP_MODE_AUTO 0x00 +#define OV8856_OTP_LOAD_CTRL_ENABLE BIT(0) + /* vertical-timings from sensor */ #define OV8856_REG_VTS 0x380e #define OV8856_VTS_MAX 0x7fff @@ -711,6 +723,25 @@ static int ov8856_test_pattern(struct ov8856 *ov8856, u32 pattern) OV8856_REG_VALUE_08BIT, pattern); } +static int ov8856_check_revision(struct ov8856 *ov8856) +{ + int ret; + + ret = ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, + OV8856_REG_VALUE_08BIT, OV8856_MODE_STREAMING); + if (ret) + return ret; + + ret = ov8856_write_reg(ov8856, OV8856_OTP_MODE_CTRL, + OV8856_REG_VALUE_08BIT, OV8856_OTP_MODE_AUTO); + if (ret) + return ret; + + return ov8856_write_reg(ov8856, OV8856_OTP_LOAD_CTRL, + OV8856_REG_VALUE_08BIT, + OV8856_OTP_LOAD_CTRL_ENABLE); +} + static int ov8856_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov8856 *ov8856 = container_of(ctrl->handler, @@ -1144,6 +1175,23 @@ static int ov8856_identify_module(struct ov8856 *ov8856) return -ENXIO; } + /* check sensor hardware revision */ + ret = ov8856_check_revision(ov8856); + if (ret) { + dev_err(&client->dev, "failed to check sensor revision"); + return ret; + } + + ret = ov8856_read_reg(ov8856, OV8856_MODULE_REVISION, + OV8856_REG_VALUE_08BIT, &val); + if (ret) + return ret; + + dev_info(&client->dev, "OV8856 revision %x (%s) at address 0x%02x\n", + val, + val == OV8856_1B_MODULE ? "1B" : "unknown revision", + client->addr); + return 0; } @@ -1254,12 +1302,6 @@ static int ov8856_probe(struct i2c_client *client) return PTR_ERR(ov8856->xvclk); } - ret = clk_set_rate(ov8856->xvclk, OV8856_XVCLK_24); - if (ret < 0) { - dev_err(&client->dev, "failed to set xvclk rate (24MHz)\n"); - return ret; - } - ov8856->reset_gpio = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(ov8856->reset_gpio)) {