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 ED142C636D4 for ; Tue, 7 Feb 2023 18:13:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231572AbjBGSNF (ORCPT ); Tue, 7 Feb 2023 13:13:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38146 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229679AbjBGSNE (ORCPT ); Tue, 7 Feb 2023 13:13:04 -0500 Received: from mail-io1-xd29.google.com (mail-io1-xd29.google.com [IPv6:2607:f8b0:4864:20::d29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9D893B0FA for ; Tue, 7 Feb 2023 10:13:00 -0800 (PST) Received: by mail-io1-xd29.google.com with SMTP id o1so5979829ioo.10 for ; Tue, 07 Feb 2023 10:13:00 -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=EZ45IrDKWNh1GNaH0rrm//oqvmlJdwek0NLAA12C2Vo=; b=T59XGzvemWTikM7hwUHfvZCLjUg5glA42NwS6JXky+FROsPYDZt3ETpCRj+yhMmtlq jG7gMn3L/yC6/WeestH3Je3lwsmD12d78g1J1RBSB0hSAaibXqOLuu37W+5LdoK0Wy3/ j84c5/iCgZ5wE3MyUe7FJQGCvHElhfv6bznwo= 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=EZ45IrDKWNh1GNaH0rrm//oqvmlJdwek0NLAA12C2Vo=; b=yKmcTHYMgJ8BzG9+4cNtAKwPKinaaAQXWQXFh3DJz8XCfDXbvXLASg9vfiN3MFQzlU 4k4YBcZQf6II3/uk15+9ldkx+ZDPJkaueV3uFA76g5/V069d+poJS+0zEQ3ZpbYXBIfG O/4lqCwXjrO1AAOQFd6IY2WxzReuuFc0UaeBY4A9zewk4ZSZ9LuSpjFLjfK55sxeewug ox9BYDSkkXnhBGLAEEeDudF/C4yKa1eN6/M+puXAZpxkFm3Bm+bPFWeMSmYnACH8O+ty 3iVIzVgCQyk5Pc6OtBA0WXBJN8Y6Hn7SDaZzhkgTtMchCnX50VAWTHZewKWlTK7ijn+Q 6evw== X-Gm-Message-State: AO0yUKUreOq9RDLzRWaLnBydrv3RRQhJ+t4EjyaC9R8rBoC+vTd7Pf9Q 6J1WX7jy5y3qOf0t/9wvNDEATQ== X-Google-Smtp-Source: AK7set/2CIz6vckraH4+UdivsUaT7YNmbbx2aeIn8vJA1GS+BD+ZOfrqFLZZ0fOBAu7/GBnr5etJzA== X-Received: by 2002:a5d:97cc:0:b0:719:80c7:43c2 with SMTP id k12-20020a5d97cc000000b0071980c743c2mr3734058ios.9.1675793580147; Tue, 07 Feb 2023 10:13:00 -0800 (PST) Received: from localhost (30.23.70.34.bc.googleusercontent.com. [34.70.23.30]) by smtp.gmail.com with UTF8SMTPSA id c6-20020a92cf06000000b00313dda6b853sm818226ilo.39.2023.02.07.10.12.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Feb 2023 10:12:59 -0800 (PST) Date: Tue, 7 Feb 2023 18:12:59 +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 1/7] arm64: dts: qcom: sc7280: On QCard, regulator L3C should be 1.8V Message-ID: References: <20230207024816.525938-1-dianders@chromium.org> <20230206184744.1.I784f4b3d7e4a06edafff4a3129f52e749889bc05@changeid> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230206184744.1.I784f4b3d7e4a06edafff4a3129f52e749889bc05@changeid> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 06, 2023 at 06:48:10PM -0800, Douglas Anderson wrote: > On the first sc7280 QCards the L3C rail was never really used for > anything. Stuffing options on the QCard meant that the QCard itself > didn't use this rail for anything. This rail did get sent to the > mainboard, but no existing mainboards ever did anything with it other > that route it to a testpoint. nit: s/that/than/ no need to re-spin just for that > On later sc7280 QCards, the L3C rail was repurposed. Instead of being > a (nominally) 3.3V rail, it was decided to make it a 1.8V rail. It is > now provided to the display connector (which might route it to the > touchscreen) and also used to power some buffers relating to > touchscreen IO. This rail is getting the additional tag "ts_avccio", > though some places still refer to it as "vreg_l3c_3p0" despite the > fact that the name now specifies the wrong voltage. > > Since it never hurts for this rail to be 1.8V (even on old QCards / > old boards), let's just change it to 1.8V across the board and add the > extra "ts_avccio" moniker as a label in the device tree. > > Future patches will start using this rail in their touchscreens. > > Signed-off-by: Douglas Anderson Reviewed-by: Matthias Kaehlcke