From patchwork Tue Feb 7 02:48:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 13130902 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 BC58BC64EC4 for ; Tue, 7 Feb 2023 02:49:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229850AbjBGCtF (ORCPT ); Mon, 6 Feb 2023 21:49:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44660 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229882AbjBGCs7 (ORCPT ); Mon, 6 Feb 2023 21:48:59 -0500 Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 143CA366AB for ; Mon, 6 Feb 2023 18:48:48 -0800 (PST) Received: by mail-pj1-x102e.google.com with SMTP id bx22so10674738pjb.3 for ; Mon, 06 Feb 2023 18:48:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FtYd96w13o2OREzHMRA9bmLEb9XbyiE/swWiI2WGNPk=; b=alBdbTs4aYTpqvsvp5qXhFdhnTI2epGijKZElaHhBcVXZvnCcyMKZgCAcxYLjgqh87 oQNA7vnnvFTkbN1ys+txiF+FEZ2cDXgAK6tqUBRrNy8loJXv7iETNjXb/20vr5U+waJY cHQyz7Lsrf1udFnBDmpP5HMe1t8mqJNef+3Xc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=FtYd96w13o2OREzHMRA9bmLEb9XbyiE/swWiI2WGNPk=; b=NTcVE/dM5MCLa1fcQoeKo7laG7HrFQRMUazVa/1as14hjGX4hJpTsTTXC8nA3wJWIx MHq3jDYJv0Kk46Mk3gwmzPW/NuenasHZiZTucy7yivKK+b2g05cZHIJwNlMWiATdVgBt hWE3aSXGCV5zpl75EMRoBM8Vw4ySonSCr1//zXMfcBOAN0U2RMpoUNWjSJ5srDh1nqMe tE6TmyRFUf1MDRy4Wqi3r0XZsLFXgsolMF9u/4shjqtMKYpA3d/pkEMFhpTtZ2+C0WY9 xV1HeFErH3M4GWU7XZbZOSBUyPTVJtTzhWoliQ0Yxh5f/bcZiW6FlnLKYe6kWj9s31CN +NIw== X-Gm-Message-State: AO0yUKWmzn+3DibkW5fxHfyW1s/Z7C98rlIv29lbToLf59+GpdTP2H7m aqZjdfZFg756Vw+sW0oArozpDg== X-Google-Smtp-Source: AK7set8PakDpMdNYhbsDvMwLSodhrID1iJMRgN8+eGZpebp8JNWDDM9jPhQCsAOeKLomtmsV1bF78w== X-Received: by 2002:a05:6a21:6713:b0:bf:1769:347f with SMTP id wh19-20020a056a21671300b000bf1769347fmr1304873pzb.47.1675738127561; Mon, 06 Feb 2023 18:48:47 -0800 (PST) Received: from tictac2.mtv.corp.google.com ([2620:15c:9d:2:29fb:a635:f0df:f45a]) by smtp.gmail.com with ESMTPSA id s17-20020a63a311000000b0045dc85c4a5fsm6882430pge.44.2023.02.06.18.48.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Feb 2023 18:48:47 -0800 (PST) From: Douglas Anderson To: Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Jiri Kosina , Benjamin Tissoires Cc: linux-input@vger.kernel.org, linux-arm-msm@vger.kernel.org, Dmitry Torokhov , devicetree@vger.kernel.org, Stephen Kitt , Konrad Dybcio , Douglas Anderson , Andy Gross , linux-kernel@vger.kernel.org Subject: [PATCH 1/7] arm64: dts: qcom: sc7280: On QCard, regulator L3C should be 1.8V Date: Mon, 6 Feb 2023 18:48:10 -0800 Message-Id: <20230206184744.1.I784f4b3d7e4a06edafff4a3129f52e749889bc05@changeid> X-Mailer: git-send-email 2.39.1.519.gcb327c4b5f-goog In-Reply-To: <20230207024816.525938-1-dianders@chromium.org> References: <20230207024816.525938-1-dianders@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org 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. 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 --- arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi b/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi index df49564ae6dc..50d963957303 100644 --- a/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi @@ -230,9 +230,15 @@ vreg_l2c_1p8: ldo2 { regulator-initial-mode = ; }; + /* + * The initial design of this regulator was to use it as 3.3V, + * but due to later changes in design it was changed to 1.8V. + * The original name is kept due to same schematic. + */ + ts_avccio: vreg_l3c_3p0: ldo3 { - regulator-min-microvolt = <2800000>; - regulator-max-microvolt = <3540000>; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; regulator-initial-mode = ; };