From patchwork Thu Jun 23 09:46:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 12892011 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 361DDCCA481 for ; Thu, 23 Jun 2022 09:46:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230407AbiFWJqp (ORCPT ); Thu, 23 Jun 2022 05:46:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48636 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231259AbiFWJqk (ORCPT ); Thu, 23 Jun 2022 05:46:40 -0400 Received: from mx.kernkonzept.com (serv1.kernkonzept.com [IPv6:2a01:4f8:1c1c:b490::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB10D4993C; Thu, 23 Jun 2022 02:46:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kernkonzept.com; s=mx1; h=Content-Transfer-Encoding:MIME-Version:References :In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=rnBbkQy2L0V7vBcp8pSKVvSDrlQ1RJzOEZhug24jamc=; b=LXPmSKlf9B7PYFcaWRrKfIVTUM bkhGQWsAHgBIl0xWK5DfmTsWjmXzUEgxXS59uwJwlDPPBBeNx1V3X9PUvCUHOnVbE5BXhcObGfpVB NAcu7z1JPxILcjItyLLCusivbbP2x+ppbL36dSfpYUqtxUawTaJeH0ycCUxtj6pTpCAxDp6wifEyD 6UJcW6cCH3wZjFMTn6WUIH+UHzVYMM4Mcuk/CFST1RXZmmAKbAHWpbuXYc76sntIxoYWPJmfUjqSC tAOEZHQak0OS3FA5yOLp44A0aRGFk2JqF+JFAPcwuQVH4kgp2uDcRyv7Ayw7kfI4/SXymTORNp+Gs cfXOIhMw==; Received: from [10.22.3.24] (helo=kernkonzept.com) by mx.kernkonzept.com with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.94.2) id 1o4JQ0-005qg2-7B; Thu, 23 Jun 2022 11:46:32 +0200 From: Stephan Gerhold To: Mark Brown Cc: Bjorn Andersson , Andy Gross , Liam Girdwood , Rob Herring , Krzysztof Kozlowski , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Stephan Gerhold Subject: [PATCH 1/3] regulator: qcom_smd: Fix pm8916_pldo range Date: Thu, 23 Jun 2022 11:46:12 +0200 Message-Id: <20220623094614.1410180-2-stephan.gerhold@kernkonzept.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220623094614.1410180-1-stephan.gerhold@kernkonzept.com> References: <20220623094614.1410180-1-stephan.gerhold@kernkonzept.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The PM8916 device specification [1] documents a programmable range of 1.75V to 3.337V with 12.5mV steps for the PMOS LDOs in PM8916. This range is also used when controlling the regulator directly using the qcom_spmi-regulator driver ("ult_pldo" there). However, for some reason the qcom_smd-regulator driver allows a much larger range for the same hardware component. This could be simply a typo, since the start of the range is essentially just missing a '1'. In practice this does not cause any major problems, since the driver just sends the actual voltage to the RPM firmware instead of making use of the incorrect voltage selector. Still, having the wrong range there is confusing and prevents the regulator core from validating requests correctly. [1]: https://developer.qualcomm.com/download/sd410/pm8916pm8916-1-power-management-ic-device-specification.pdf Fixes: 57d6567680ed ("regulator: qcom-smd: Add PM8916 support") Signed-off-by: Stephan Gerhold --- drivers/regulator/qcom_smd-regulator.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/regulator/qcom_smd-regulator.c b/drivers/regulator/qcom_smd-regulator.c index 4051d5fa9df9..8b2d884cd693 100644 --- a/drivers/regulator/qcom_smd-regulator.c +++ b/drivers/regulator/qcom_smd-regulator.c @@ -358,10 +358,10 @@ static const struct regulator_desc pm8941_switch = { static const struct regulator_desc pm8916_pldo = { .linear_ranges = (struct linear_range[]) { - REGULATOR_LINEAR_RANGE(750000, 0, 208, 12500), + REGULATOR_LINEAR_RANGE(1750000, 0, 127, 12500), }, .n_linear_ranges = 1, - .n_voltages = 209, + .n_voltages = 128, .ops = &rpm_smps_ldo_ops, };