[{"id":3676254,"web_url":"http://patchwork.ozlabs.org/comment/3676254/","msgid":"<20260412-diligent-ginger-flamingo-f5059d@quoll>","list_archive_url":null,"date":"2026-04-12T09:48:46","subject":"Re: [PATCH v2 20/21] dt-bindings: gpio: describe Waveshare GPIO\n controller","submitter":{"id":68952,"url":"http://patchwork.ozlabs.org/api/people/68952/","name":"Krzysztof Kozlowski","email":"krzk@kernel.org"},"content":"On Sat, Apr 11, 2026 at 03:10:40PM +0300, Dmitry Baryshkov wrote:\n> The Waveshare DSI TOUCH family of panels has separate on-board GPIO\n> controller, which controls power supplies to the panel and the touch\n> screen and provides reset pins for both the panel and the touchscreen.\n> Also it provides a simple PWM controller for panel backlight.\n> \n> Add bindings for these GPIO controllers. As overall integration might be\n> not very obvious (and it differs significantly from the bindings used by\n> the original drivers), provide complete example with the on-board\n> regulators and the DSI panel.\n> \n> Tested-by: Riccardo Mereu <r.mereu@arduino.cc>\n\nYou cannot test a binding, it is not possible. Otherwise explain me how\ndid you copy it to the device and what sort of device runs YAML.\n\nThe tag was given here explicitly, so I really do not understand this. I\ncould imagine tags coming from a reply to the cover letter, but adding\ntag here? That's just fake test.\n\nBest regards,\nKrzysztof","headers":{"Return-Path":"\n <linux-gpio+bounces-35062-incoming=patchwork.ozlabs.org@vger.kernel.org>","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=DeZ8RlGP;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; helo=sea.lore.kernel.org;\n envelope-from=linux-gpio+bounces-35062-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=\"DeZ8RlGP\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201"],"Received":["from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4ftm4v6znmz1xtJ\n\tfor <incoming@patchwork.ozlabs.org>; Sun, 12 Apr 2026 19:50:55 +1000 (AEST)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sea.lore.kernel.org (Postfix) with ESMTP id C8053300C910\n\tfor <incoming@patchwork.ozlabs.org>; Sun, 12 Apr 2026 09:48:50 +0000 (UTC)","from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 8126637418C;\n\tSun, 12 Apr 2026 09:48:49 +0000 (UTC)","from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org\n [10.30.226.201])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id 42158304BA3;\n\tSun, 12 Apr 2026 09:48:48 +0000 (UTC)","by smtp.kernel.org (Postfix) with ESMTPSA id ED757C19424;\n\tSun, 12 Apr 2026 09:48:47 +0000 (UTC)"],"ARC-Seal":"i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1775987329; cv=none;\n b=exYz0dJm/p1QrBLk6evcJPcRiFtVXHjm9YaqK1diykN3ZfSEDqAViRVNAacGrfmXWBz7Q1kSuyi1ZwvMPQxpkddWgjiKnp3xx5OPD4ENH+p11yKxS9bX9GfHT8LG6Ad6eitiFj5DjcbeO6eLZ2sBWJ0nCls0bTdYu/w68RtjZeA=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775987329; c=relaxed/simple;\n\tbh=gOPiGli9koGij5DXb9x/NWM4UfSOi83jDyeZIdZk5n0=;\n\th=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version:\n\t Content-Type:Content-Disposition:In-Reply-To;\n b=eH3WbpU6G6050uu+9jzR2xrlvCo11fQLKD9bmPAWsHNCGIA/ni/SCktapHizQzepRD3nEheQpPQCd3PlNjOH46uoBOiFd/NKkq/KWOJd7sek/uNyC/ZBHUIXMCSLAgSidBs+T2d3ZgLycCKXHCWucb4HICqyszo07tnMiNTgXBg=","ARC-Authentication-Results":"i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=DeZ8RlGP; arc=none smtp.client-ip=10.30.226.201","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775987328;\n\tbh=gOPiGli9koGij5DXb9x/NWM4UfSOi83jDyeZIdZk5n0=;\n\th=Date:From:To:Cc:Subject:References:In-Reply-To:From;\n\tb=DeZ8RlGPZEcItgirMcg2ckLfLhxaNG7TTp7pArHCiHwgnwNGa6ve2pU65P5rP8l+f\n\t NlTeLMl5GmskQaI1Vd3hAWynvy0Jl08sJ01eLcsjBYkvsRg58yD5YgFnx7cREGe68D\n\t dfau4L7997rWCpu8ygmtHbQTnbSsGMxkr5fEhr6o1mFrh17S6WT+cTPZ7clSxXkPS6\n\t tnuFHnxhxB4VQjnEwlFN4+yaqWgaDrtAPjQK0Tu6WKOob8TDNAn4j9qOrQnPULlfHa\n\t q8W7voa0mwdO2MjI8vIMGYK9oqm4uFCLEh6ExKSXVXGu/LBr50XMraeUz56/wsZMI1\n\t uvefUXIP8LouA==","Date":"Sun, 12 Apr 2026 11:48:46 +0200","From":"Krzysztof Kozlowski <krzk@kernel.org>","To":"Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>","Cc":"Neil Armstrong <neil.armstrong@linaro.org>,\n\tJessica Zhang <jesszhan0024@gmail.com>, David Airlie <airlied@gmail.com>,\n\tSimona Vetter <simona@ffwll.ch>,\n Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,\n\tMaxime Ripard <mripard@kernel.org>, Thomas Zimmermann <tzimmermann@suse.de>,\n\tRob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>,\n\tConor Dooley <conor+dt@kernel.org>,\n Cong Yang <yangcong5@huaqin.corp-partner.google.com>,\n\tOndrej Jirman <megi@xff.cz>, Javier Martinez Canillas <javierm@redhat.com>,\n\tJagan Teki <jagan@edgeble.ai>, Liam Girdwood <lgirdwood@gmail.com>,\n\tMark Brown <broonie@kernel.org>, Linus Walleij <linusw@kernel.org>,\n\tBartosz Golaszewski <brgl@kernel.org>, dri-devel@lists.freedesktop.org,\n devicetree@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,\n Riccardo Mereu <r.mereu@arduino.cc>","Subject":"Re: [PATCH v2 20/21] dt-bindings: gpio: describe Waveshare GPIO\n controller","Message-ID":"<20260412-diligent-ginger-flamingo-f5059d@quoll>","References":"<20260411-waveshare-dsi-touch-v2-0-75cdbeac5156@oss.qualcomm.com>\n <20260411-waveshare-dsi-touch-v2-20-75cdbeac5156@oss.qualcomm.com>","Precedence":"bulk","X-Mailing-List":"linux-gpio@vger.kernel.org","List-Id":"<linux-gpio.vger.kernel.org>","List-Subscribe":"<mailto:linux-gpio+subscribe@vger.kernel.org>","List-Unsubscribe":"<mailto:linux-gpio+unsubscribe@vger.kernel.org>","MIME-Version":"1.0","Content-Type":"text/plain; charset=utf-8","Content-Disposition":"inline","In-Reply-To":"\n <20260411-waveshare-dsi-touch-v2-20-75cdbeac5156@oss.qualcomm.com>"}},{"id":3676401,"web_url":"http://patchwork.ozlabs.org/comment/3676401/","msgid":"<mzuwcmkg6u3l3b36wiemdliq7fjrmu3hx6bxba4k6nyhfffibs@a7qh6wcivc5v>","list_archive_url":null,"date":"2026-04-13T00:56:10","subject":"Re: [PATCH v2 20/21] dt-bindings: gpio: describe Waveshare GPIO\n controller","submitter":{"id":90483,"url":"http://patchwork.ozlabs.org/api/people/90483/","name":"Dmitry Baryshkov","email":"dmitry.baryshkov@oss.qualcomm.com"},"content":"On Sun, Apr 12, 2026 at 11:48:46AM +0200, Krzysztof Kozlowski wrote:\n> On Sat, Apr 11, 2026 at 03:10:40PM +0300, Dmitry Baryshkov wrote:\n> > The Waveshare DSI TOUCH family of panels has separate on-board GPIO\n> > controller, which controls power supplies to the panel and the touch\n> > screen and provides reset pins for both the panel and the touchscreen.\n> > Also it provides a simple PWM controller for panel backlight.\n> > \n> > Add bindings for these GPIO controllers. As overall integration might be\n> > not very obvious (and it differs significantly from the bindings used by\n> > the original drivers), provide complete example with the on-board\n> > regulators and the DSI panel.\n> > \n> > Tested-by: Riccardo Mereu <r.mereu@arduino.cc>\n> \n> You cannot test a binding, it is not possible. Otherwise explain me how\n> did you copy it to the device and what sort of device runs YAML.\n\nI'll drop it from the next iteration.\n\n> \n> The tag was given here explicitly, so I really do not understand this. I\n> could imagine tags coming from a reply to the cover letter, but adding\n> tag here? That's just fake test.\n> \n> Best regards,\n> Krzysztof\n>","headers":{"Return-Path":"\n <linux-gpio+bounces-35074-incoming=patchwork.ozlabs.org@vger.kernel.org>","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=Ouj5s11M;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=NCMWYILU;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; helo=sea.lore.kernel.org;\n envelope-from=linux-gpio+bounces-35074-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com\n header.b=\"Ouj5s11M\";\n\tdkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.b=\"NCMWYILU\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=205.220.168.131","smtp.subspace.kernel.org;\n dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=oss.qualcomm.com"],"Received":["from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fv89c0S1Tz1yDF\n\tfor <incoming@patchwork.ozlabs.org>; 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