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Fri, 22 May 2020 01:46:00 -0800 Received: from MTKMBS31DR.mediatek.inc (172.27.6.102) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 May 2020 02:46:14 -0700 Received: from MTKCAS32.mediatek.inc (172.27.4.184) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 May 2020 17:46:08 +0800 Received: from [10.17.3.153] (10.17.3.153) by MTKCAS32.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 22 May 2020 17:46:07 +0800 Message-ID: <1590140674.8804.401.camel@mhfsdcap03> Subject: Re: [V8, 1/2] media: dt-bindings: media: i2c: Document OV02A10 bindings From: Dongchun Zhu To: Tomasz Figa Date: Fri, 22 May 2020 17:44:34 +0800 In-Reply-To: <20200521193525.GB14214@chromium.org> References: <20200509080627.23222-1-dongchun.zhu@mediatek.com> <20200509080627.23222-2-dongchun.zhu@mediatek.com> <20200511160207.GA32476@bogus> <20200521193525.GB14214@chromium.org> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-TM-SNTS-SMTP: D5065D85BB825F36842C4C8BA7BA18E92E4A289B7885F1D5FAF1F8151DF263B12000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200522_024622_352818_A54D890C X-CRM114-Status: GOOD ( 18.42 ) X-BeenThere: linux-mediatek@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@arm.com, Rob Herring , andriy.shevchenko@linux.intel.com, srv_heupstream@mediatek.com, devicetree@vger.kernel.org, linus.walleij@linaro.org, shengnan.wang@mediatek.com, louis.kuo@mediatek.com, bgolaszewski@baylibre.com, sj.huang@mediatek.com, drinkcat@chromium.org, linux-mediatek@lists.infradead.org, dongchun.zhu@mediatek.com, sakari.ailus@linux.intel.com, matthias.bgg@gmail.com, bingbu.cao@intel.com, mchehab@kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Hi Tomasz, Rob, On Thu, 2020-05-21 at 19:35 +0000, Tomasz Figa wrote: > Hi Rob, > > On Mon, May 11, 2020 at 11:02:07AM -0500, Rob Herring wrote: > > On Sat, May 09, 2020 at 04:06:26PM +0800, Dongchun Zhu wrote: > > > Add DT bindings documentation for Omnivision OV02A10 image sensor. > > > > > > Signed-off-by: Dongchun Zhu > > > --- > > > .../bindings/media/i2c/ovti,ov02a10.yaml | 184 +++++++++++++++++++++ > > > MAINTAINERS | 7 + > > > 2 files changed, 191 insertions(+) > > > create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml > > > > > > diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml > > > new file mode 100644 > > > index 0000000..5468d1b > > > --- /dev/null > > > +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml > > > @@ -0,0 +1,184 @@ > > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > > > +# Copyright (c) 2020 MediaTek Inc. > > > +%YAML 1.2 > > > +--- > > > +$id: http://devicetree.org/schemas/media/i2c/ovti,ov02a10.yaml# > > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > > + > > > +title: Omnivision OV02A10 CMOS Sensor Device Tree Bindings > > > + > > > +maintainers: > > > + - Dongchun Zhu > > > + > > > +description: |- > > > + The Omnivision OV02A10 is a low-cost, high performance, 1/5-inch, 2 megapixel > > > + image sensor, which is the latest production derived from Omnivision's CMOS > > > + image sensor technology. Ihis chip supports high frame rate speeds up to 30fps > > > + @ 1600x1200 (UXGA) resolution transferred over a 1-lane MIPI interface. The > > > + sensor output is available via CSI-2 serial data output. > > > + > > > +properties: > > > + compatible: > > > + const: ovti,ov02a10 > > > + > > > + reg: > > > + description: I2C device address > > > > Drop this. Nothing specific to this device. > > > > > + maxItems: 1 > > > + > > > + clocks: > > > + items: > > > + - description: top mux camtg clock > > > + - description: devider clock > > > > typo > > > > > + > > > + clock-names: > > > + items: > > > + - const: eclk > > > + - const: freq_mux > > > + > > > + clock-frequency: > > > + description: > > > + Frequency of the eclk 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. > > > + > > > + powerdown-gpios: > > > + maxItems: 1 > > > + > > > + reset-gpios: > > > + maxItems: 1 > > I asked a question about defining GPIO polarities some time ago, but I > guess it slipped through. > > The chip documentation calls the reset pin as "RST_PAD (low level > reset)". Where should the inversion be handled, in the driver or here, > by having the DT include a necessary flag in the specifier? > > Best regards, > Tomasz For powerdown-gpios and reset-gpios, I actually defined two totally different GPIO polarities in DT according to OV02A10 chip documentation. One is GPIO_ACTIVE_LOW, the other is GPIO_ACTIVE_HIGH (see examples below). So I'm wondering if we could add such one polarity-flag that Tomasz suggested. _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek 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=-8.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_2 autolearn=ham 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 80E15C433E1 for ; Fri, 22 May 2020 09:46:26 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 47EB020814 for ; 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bh=tF2iza3+T10u3OYpCiSW5Eyu/FLsGC6AH37q0WErEYM=; b=lqQkVcavQp7yKMnO1Nr4beSI13g7xmJpXAOih7nVVPXmlCiObzzYg0RZG5sm27BH2NuTmciQ5r1gGmX7XOlJxD468rbhJsVqVZUG1l15zmzaTQVAe+0VuL8smX56ra1tuoQfq7+6jUXQXuD4Vy1/NmkS65nbi4dIKmycCMWXkJ8=; X-UUID: ed81c43588ec405eadbeee74b6ff8f03-20200522 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1386406660; Fri, 22 May 2020 01:46:00 -0800 Received: from MTKMBS31DR.mediatek.inc (172.27.6.102) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 May 2020 02:46:14 -0700 Received: from MTKCAS32.mediatek.inc (172.27.4.184) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 May 2020 17:46:08 +0800 Received: from [10.17.3.153] (10.17.3.153) by MTKCAS32.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 22 May 2020 17:46:07 +0800 Message-ID: <1590140674.8804.401.camel@mhfsdcap03> Subject: Re: [V8, 1/2] media: dt-bindings: media: i2c: Document OV02A10 bindings From: Dongchun Zhu To: Tomasz Figa Date: Fri, 22 May 2020 17:44:34 +0800 In-Reply-To: <20200521193525.GB14214@chromium.org> References: <20200509080627.23222-1-dongchun.zhu@mediatek.com> <20200509080627.23222-2-dongchun.zhu@mediatek.com> <20200511160207.GA32476@bogus> <20200521193525.GB14214@chromium.org> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-TM-SNTS-SMTP: D5065D85BB825F36842C4C8BA7BA18E92E4A289B7885F1D5FAF1F8151DF263B12000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200522_024622_352818_A54D890C X-CRM114-Status: GOOD ( 18.42 ) 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@arm.com, Rob Herring , andriy.shevchenko@linux.intel.com, srv_heupstream@mediatek.com, devicetree@vger.kernel.org, linus.walleij@linaro.org, shengnan.wang@mediatek.com, louis.kuo@mediatek.com, bgolaszewski@baylibre.com, sj.huang@mediatek.com, drinkcat@chromium.org, linux-mediatek@lists.infradead.org, dongchun.zhu@mediatek.com, sakari.ailus@linux.intel.com, matthias.bgg@gmail.com, bingbu.cao@intel.com, mchehab@kernel.org, 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 Tomasz, Rob, On Thu, 2020-05-21 at 19:35 +0000, Tomasz Figa wrote: > Hi Rob, > > On Mon, May 11, 2020 at 11:02:07AM -0500, Rob Herring wrote: > > On Sat, May 09, 2020 at 04:06:26PM +0800, Dongchun Zhu wrote: > > > Add DT bindings documentation for Omnivision OV02A10 image sensor. > > > > > > Signed-off-by: Dongchun Zhu > > > --- > > > .../bindings/media/i2c/ovti,ov02a10.yaml | 184 +++++++++++++++++++++ > > > MAINTAINERS | 7 + > > > 2 files changed, 191 insertions(+) > > > create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml > > > > > > diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml > > > new file mode 100644 > > > index 0000000..5468d1b > > > --- /dev/null > > > +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml > > > @@ -0,0 +1,184 @@ > > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > > > +# Copyright (c) 2020 MediaTek Inc. > > > +%YAML 1.2 > > > +--- > > > +$id: http://devicetree.org/schemas/media/i2c/ovti,ov02a10.yaml# > > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > > + > > > +title: Omnivision OV02A10 CMOS Sensor Device Tree Bindings > > > + > > > +maintainers: > > > + - Dongchun Zhu > > > + > > > +description: |- > > > + The Omnivision OV02A10 is a low-cost, high performance, 1/5-inch, 2 megapixel > > > + image sensor, which is the latest production derived from Omnivision's CMOS > > > + image sensor technology. Ihis chip supports high frame rate speeds up to 30fps > > > + @ 1600x1200 (UXGA) resolution transferred over a 1-lane MIPI interface. The > > > + sensor output is available via CSI-2 serial data output. > > > + > > > +properties: > > > + compatible: > > > + const: ovti,ov02a10 > > > + > > > + reg: > > > + description: I2C device address > > > > Drop this. Nothing specific to this device. > > > > > + maxItems: 1 > > > + > > > + clocks: > > > + items: > > > + - description: top mux camtg clock > > > + - description: devider clock > > > > typo > > > > > + > > > + clock-names: > > > + items: > > > + - const: eclk > > > + - const: freq_mux > > > + > > > + clock-frequency: > > > + description: > > > + Frequency of the eclk 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. > > > + > > > + powerdown-gpios: > > > + maxItems: 1 > > > + > > > + reset-gpios: > > > + maxItems: 1 > > I asked a question about defining GPIO polarities some time ago, but I > guess it slipped through. > > The chip documentation calls the reset pin as "RST_PAD (low level > reset)". Where should the inversion be handled, in the driver or here, > by having the DT include a necessary flag in the specifier? > > Best regards, > Tomasz For powerdown-gpios and reset-gpios, I actually defined two totally different GPIO polarities in DT according to OV02A10 chip documentation. One is GPIO_ACTIVE_LOW, the other is GPIO_ACTIVE_HIGH (see examples below). So I'm wondering if we could add such one polarity-flag that Tomasz suggested. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-8.3 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,UNPARSEABLE_RELAY,USER_AGENT_SANE_2 autolearn=ham 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 B5C28C433E0 for ; Fri, 22 May 2020 09:46:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A0C520738 for ; Fri, 22 May 2020 09:46:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="lqQkVcav" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728288AbgEVJqX (ORCPT ); Fri, 22 May 2020 05:46:23 -0400 Received: from mailgw02.mediatek.com ([1.203.163.81]:10834 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1728212AbgEVJqW (ORCPT ); Fri, 22 May 2020 05:46:22 -0400 X-UUID: 56c7dee73a154dfea8217dc7d4770b7d-20200522 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:MIME-Version:Content-Type:References:In-Reply-To:Date:CC:To:From:Subject:Message-ID; bh=tF2iza3+T10u3OYpCiSW5Eyu/FLsGC6AH37q0WErEYM=; b=lqQkVcavQp7yKMnO1Nr4beSI13g7xmJpXAOih7nVVPXmlCiObzzYg0RZG5sm27BH2NuTmciQ5r1gGmX7XOlJxD468rbhJsVqVZUG1l15zmzaTQVAe+0VuL8smX56ra1tuoQfq7+6jUXQXuD4Vy1/NmkS65nbi4dIKmycCMWXkJ8=; X-UUID: 56c7dee73a154dfea8217dc7d4770b7d-20200522 Received: from mtkcas32.mediatek.inc [(172.27.4.253)] by mailgw02.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 684350652; Fri, 22 May 2020 17:46:13 +0800 Received: from MTKCAS32.mediatek.inc (172.27.4.184) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 May 2020 17:46:08 +0800 Received: from [10.17.3.153] (10.17.3.153) by MTKCAS32.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 22 May 2020 17:46:07 +0800 Message-ID: <1590140674.8804.401.camel@mhfsdcap03> Subject: Re: [V8, 1/2] media: dt-bindings: media: i2c: Document OV02A10 bindings From: Dongchun Zhu To: Tomasz Figa CC: Rob Herring , , , , , , , , , , , , , , , , , , Date: Fri, 22 May 2020 17:44:34 +0800 In-Reply-To: <20200521193525.GB14214@chromium.org> References: <20200509080627.23222-1-dongchun.zhu@mediatek.com> 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