Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2788C636D4 for ; Tue, 7 Feb 2023 18:48:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230467AbjBGSr7 (ORCPT ); Tue, 7 Feb 2023 13:47:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41352 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232490AbjBGSrw (ORCPT ); Tue, 7 Feb 2023 13:47:52 -0500 Received: from mail-il1-x12d.google.com (mail-il1-x12d.google.com [IPv6:2607:f8b0:4864:20::12d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E4ACE241E0 for ; Tue, 7 Feb 2023 10:47:36 -0800 (PST) Received: by mail-il1-x12d.google.com with SMTP id b9so12302ilh.12 for ; Tue, 07 Feb 2023 10:47:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=hh1+psgQjuaoleUt0Gfjzl6xxwSk1nOZXISdOJBYhZo=; b=O7Uql6UeoJwdzn+dt4TAvMk8iH4jBm5N2loXY9CB226GBn0RtTECMbXjXJ60XsdQxe 61YUI+7efXufASEAZrNbadz8aGg6nSGQWlsY0/HAPISK7mvJnCmD9dEuiwS0KwmJNxzF 56mJBBvnPFWilfM4C/G4e5RWJLWhx3wgvtLkg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=hh1+psgQjuaoleUt0Gfjzl6xxwSk1nOZXISdOJBYhZo=; b=rnnFAiX0YaIrUFsbivbAXO/lzLL6efveNqjMbQU2ZMw/FBcUGJ4nL3l3bYZzKo47vH LN4c7Rdceqrq14kc54iPhk8Z2I8Pn93lNXTJ05xaoDEGSzZ8KpdcbaI6M/Y6H0/Th4QK 0RD0MlkCeG249Ibs6edJieUfXKV1Hcpi9Z8Hk02Xp6fQCVOm1/BXdd+2xZyXMJEwTub3 bLousVaKPhNxIkgLl321ujJm7A3BODo5qz9AZ8JJWHqWON6rarcK0tK9MhgEdU5MV/FY 5dV9ShEoV+vHH3nRWY7HWR27xfOrw+wEnOD/2Hu9hLzPfvhjkkgVJdgAT/R7mVeJve8p 4rWA== X-Gm-Message-State: AO0yUKUxsn7cUAXpV0q4D5kAJN1sPxlSBySv0iJAjFRWTu+5X9dZ3PPF GvsGp3ZKPxxtxrxKuWk3teFbZn3i+acgHH/h X-Google-Smtp-Source: AK7set+50Q8ImTBYrWghW1Qs2pOZ11pGyr3Fu5kYn4klXUQILP7Y+Jx3pulSXi5JSEPRwJXz9Jgkrg== X-Received: by 2002:a05:6e02:1b06:b0:313:dffd:6268 with SMTP id i6-20020a056e021b0600b00313dffd6268mr4304294ilv.30.1675795656275; Tue, 07 Feb 2023 10:47:36 -0800 (PST) Received: from localhost (30.23.70.34.bc.googleusercontent.com. [34.70.23.30]) by smtp.gmail.com with UTF8SMTPSA id u18-20020a02c052000000b00346a98b0a76sm286698jam.77.2023.02.07.10.47.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Feb 2023 10:47:35 -0800 (PST) Date: Tue, 7 Feb 2023 18:47:35 +0000 From: Matthias Kaehlcke To: Douglas Anderson Cc: Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Jiri Kosina , Benjamin Tissoires , linux-input@vger.kernel.org, linux-arm-msm@vger.kernel.org, Dmitry Torokhov , devicetree@vger.kernel.org, Stephen Kitt , Konrad Dybcio , Andy Gross , linux-kernel@vger.kernel.org Subject: Re: [PATCH 7/7] arm64: dts: qcom: sc7280: Hook up the touchscreen IO rail on evoker Message-ID: References: <20230207024816.525938-1-dianders@chromium.org> <20230206184744.7.I2d960ed7f2445db0cf3d227fde985fbd740f3c4d@changeid> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230206184744.7.I2d960ed7f2445db0cf3d227fde985fbd740f3c4d@changeid> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 06, 2023 at 06:48:16PM -0800, Douglas Anderson wrote: > On older revisions of evoker, the touchscreen was either > non-functional or needed special hardware magic to get it talking > properly. It's been decided that the proper way going forward is to > use L3C to power some buffers on the QCard and then configure the > touchscreens for 1.8V. Let's do that. > > Note that this is safe to do even on older revs even if it might not > make the touchscreen work there (because they didn't have a properly > stuffed QCard). As talked about in the patch ("arm64: dts: qcom: > sc7280: On QCard, regulator L3C should be 1.8V") the L3C regulator > didn't go anywhere at all on older revs. > > This patch relies on the patch ("HID: i2c-hid: goodix: Add > mainboard-vddio-supply") in order to function properly. Without that > patch this one won't do any harm but it won't actually accomplish its > goal. > > Signed-off-by: Douglas Anderson Reviewed-by: Matthias Kaehlcke