From patchwork Tue Aug 30 07:46:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongxing Zhu X-Patchwork-Id: 12958900 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1FFCDC0502A for ; Tue, 30 Aug 2022 08:07:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=rw+1RJT/meF4CoKzhVcDNQrUgQoF3k8jReL5/nIXCTk=; b=kbIKNF2Br044bp SWF2Ur0KJScqsoj6exgL/khL+UXAX1c27bEiP2qcWAKAu7oqPab76496GkyhVzhhRDapCPt5s4Zla dLg5/UuLvp+tEvAWYnyBaXV/u/nVzl2fPbL5VylNPVpJFTTW+O2aRrwLfgx5xChqFx95Frk1STMcF GaRybXGXteUgcravXh+IyrFUj2hLatGEbkvoG/jQhsX25JVK+zPKEL67jEyoSnsR1dNsTqFLW+hjH RLGAdieF3e14cjOyvB/pXxXMJrdPm02WgZDIw/tRMc9g9pdKR7P5+ilUxBq+bcx7kecfu5UNX1Zig Vq2DZXD56zX956s2dbvQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSwHj-00F3B3-5P; Tue, 30 Aug 2022 08:07:47 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSwDu-00F1cQ-F8; Tue, 30 Aug 2022 08:03:54 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 061AB203D96; Tue, 30 Aug 2022 10:03:49 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id C181E203DB6; Tue, 30 Aug 2022 10:03:48 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id BF4B3180031C; Tue, 30 Aug 2022 16:03:46 +0800 (+08) From: Richard Zhu To: p.zabel@pengutronix.de, l.stach@pengutronix.de, bhelgaas@google.com, lorenzo.pieralisi@arm.com, robh@kernel.org, shawnguo@kernel.org, vkoul@kernel.org, alexander.stein@ew.tq-group.com, marex@denx.de, richard.leitner@linux.dev Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v5 4/7] reset: imx7: Fix the iMX8MP PCIe PHY PERST support Date: Tue, 30 Aug 2022 15:46:01 +0800 Message-Id: <1661845564-11373-5-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1661845564-11373-1-git-send-email-hongxing.zhu@nxp.com> References: <1661845564-11373-1-git-send-email-hongxing.zhu@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220830_010350_834235_F6A65183 X-CRM114-Status: UNSURE ( 7.67 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On i.MX7/iMX8MM/iMX8MQ, the initialized default value of PERST bit(BIT3) of SRC_PCIEPHY_RCR is 1b'1. But i.MX8MP has one inversed default value 1b'0 of PERST bit. And the PERST bit should be kept 1b'1 after power and clocks are stable. So fix the i.MX8MP PCIe PHY PERST support here. Fixes: e08672c03981 ("reset: imx7: Add support for i.MX8MP SoC") Signed-off-by: Richard Zhu Reviewed-by: Philipp Zabel Tested-by: Marek Vasut Tested-by: Richard Leitner Tested-by: Alexander Stein --- drivers/reset/reset-imx7.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/reset/reset-imx7.c b/drivers/reset/reset-imx7.c index 185a333df66c..d2408725eb2c 100644 --- a/drivers/reset/reset-imx7.c +++ b/drivers/reset/reset-imx7.c @@ -329,6 +329,7 @@ static int imx8mp_reset_set(struct reset_controller_dev *rcdev, break; case IMX8MP_RESET_PCIE_CTRL_APPS_EN: + case IMX8MP_RESET_PCIEPHY_PERST: value = assert ? 0 : bit; break; }