From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A21C0C282C4 for ; Wed, 13 Feb 2019 03:05:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 61E72207E0 for ; Wed, 13 Feb 2019 03:05:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550027115; bh=MFeAnHiJ4r6YGufQ8LsUH1G9t/JAmsxD/hPI1z5JOmQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=acms5UJF99yLvnscuthVQB2r6MWHhJOs2C+5erKEwacGWqaIWA26g8bt3cCi6vyz7 TSIvWmLxf9fA/GYSshCnC4Z83W4fBBro3FDCpAvhckQKPhQC7awmVYSWt0F4sIpZsy AVKFcgkeZl1zIVbfW5nrC5xyOWEge7rBY+QBSKAo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387551AbfBMCeB (ORCPT ); Tue, 12 Feb 2019 21:34:01 -0500 Received: from mail.kernel.org ([198.145.29.99]:37452 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387486AbfBMCdu (ORCPT ); Tue, 12 Feb 2019 21:33:50 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5284F222BA; Wed, 13 Feb 2019 02:33:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550025229; bh=MFeAnHiJ4r6YGufQ8LsUH1G9t/JAmsxD/hPI1z5JOmQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D66HjxMGr0nLG0dPfdHHzRN03pHKwyawf9teFa8KaDPzr14RHfgNRNS6oVbolKypa GY3ItBLQMA/On0uniu1Gl5A/d/I8J1MUqoh6lbDQHKduOKbKU4gtOMCKLnJv0rpbPp LQrcmmtl6Nxue9a/eYjtGOxqh4WTqoSFpCIEkTm8= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jonathan Marek , Lee Jones , Sasha Levin Subject: [PATCH AUTOSEL 4.20 013/105] mfd: qcom_rpm: write fw_version to CTRL_REG Date: Tue, 12 Feb 2019 21:32:04 -0500 Message-Id: <20190213023336.19019-13-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190213023336.19019-1-sashal@kernel.org> References: <20190213023336.19019-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jonathan Marek [ Upstream commit 504e4175829c44328773b96ad9c538e4783a8d22 ] This is required as part of the initialization sequence on certain SoCs. If these registers are not initialized, the hardware can be unresponsive. This fixes the driver on apq8060 (HP TouchPad device). Signed-off-by: Jonathan Marek Signed-off-by: Lee Jones Signed-off-by: Sasha Levin --- drivers/mfd/qcom_rpm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c index 52fafea06067..8d420c37b2a6 100644 --- a/drivers/mfd/qcom_rpm.c +++ b/drivers/mfd/qcom_rpm.c @@ -638,6 +638,10 @@ static int qcom_rpm_probe(struct platform_device *pdev) return -EFAULT; } + writel(fw_version[0], RPM_CTRL_REG(rpm, 0)); + writel(fw_version[1], RPM_CTRL_REG(rpm, 1)); + writel(fw_version[2], RPM_CTRL_REG(rpm, 2)); + dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0], fw_version[1], fw_version[2]); -- 2.19.1