From patchwork Sat Nov 5 14:59:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 622152 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 E0FA8C43217 for ; Sat, 5 Nov 2022 15:02:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229899AbiKEPC4 (ORCPT ); Sat, 5 Nov 2022 11:02:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229839AbiKEPCx (ORCPT ); Sat, 5 Nov 2022 11:02:53 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B784B10B42; Sat, 5 Nov 2022 08:02:52 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 1B72C60B6F; Sat, 5 Nov 2022 15:02:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C886BC4FF17; Sat, 5 Nov 2022 15:02:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1667660570; bh=HswirRZMlApYAI9kTzaONSnZBS07q3rfW88eCURWAbc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f2KFFSzJlwgFFaftmny888e0DFnIu5CQEgjJy6FYKyKnu2yWfzLHCtHgaF++R3WYG QsVrzuxQ1O0UkhgnM+Fk4UZvv9rGP3LbUW5vN8J2i5QtQ3re8y/I0VPjD07Bjc4gwt YQGGt/47YCwQ9fZYLxNbY0OURkBbi+2tVPdTR/Kvcycs+YfxZvLxbcrg+QSXb55XKn AZjkA1TaI0lJR3q5Ytf0vTi8BCcawhbBSu5SQtPP65GIDUNMeEOftPBo54XEOxL31E Y1YAkQrkrGx3b9ATP6Gz0EVYQo83MDa9V/a3KCLPMXJpXcadPIqsvYPqQckq7WBSs9 eDSiNuaAPZMXg== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1orKgp-0005Kp-R1; Sat, 05 Nov 2022 16:02:31 +0100 From: Johan Hovold To: Vinod Koul Cc: Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , Dmitry Baryshkov Subject: [PATCH v5 13/16] phy: qcom-qmp-pcie: fix initialisation reset Date: Sat, 5 Nov 2022 15:59:36 +0100 Message-Id: <20221105145939.20318-14-johan+linaro@kernel.org> X-Mailer: git-send-email 2.37.4 In-Reply-To: <20221105145939.20318-1-johan+linaro@kernel.org> References: <20221105145939.20318-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add the missing delay after asserting reset. This is specifically needed for the reset to have any effect on SC8280XP. The vendor driver uses a 1 ms delay, but that seems a bit excessive. Instead use a 200 us delay which appears to be more than enough and also matches the UFS reset delay added by commit 870b1279c7a0 ("scsi: ufs-qcom: Add reset control support for host controller"). Reviewed-by: Dmitry Baryshkov Signed-off-by: Johan Hovold --- drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c index 8af84ff755ab..06844552922e 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c @@ -1866,6 +1866,8 @@ static int qmp_pcie_init(struct phy *phy) goto err_disable_regulators; } + usleep_range(200, 300); + ret = reset_control_bulk_deassert(cfg->num_resets, qmp->resets); if (ret) { dev_err(qmp->dev, "reset deassert failed\n");