From patchwork Fri Jul 26 11:32:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xu Yang X-Patchwork-Id: 13742679 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 CE754C3DA49 for ; Fri, 26 Jul 2024 11:33:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding: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=082CBnKqQey2usj2e1lYqAFijkTNNrz6CRtE3R6EVEA=; b=p73y5cvMvfnC3A3JmAg1h6gmON bj+emKW8GlsF2s6BO99ytjXf7nT1BvEaK8jrHiG2U0HzJ0D8qYN+YZGqLWk39Ye88fdcNQC7NjrZV sPYFH6PD+1+JJ1Sa0Y/wwAaAwZULk4vYPXlMpY6YwQ8yq1tKUs/CHI7gSaBEuIFV8HrDJTKvNPj6r gVHktBuhCOS85pI3feDYc2Sk2PwR8+5Mu7csmif7hokM6hz3DT/ZHBc2IL6+DzPeChQ+r9hqD3ozG sqTm/JeHwjXbubVqBPlMSawwUZ9y+MuN2JxFcO6cH5rJ7w+JRuH+QhfyVvxGJ7MHqBdYe9y9Lt0s+ cSyq9FnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sXJBy-00000003jda-2GlK; Fri, 26 Jul 2024 11:32:58 +0000 Received: from mail-northeuropeazlp170120003.outbound.protection.outlook.com ([2a01:111:f403:c200::3] helo=DU2PR03CU002.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sXJB2-00000003jKG-0yM2; Fri, 26 Jul 2024 11:32:01 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=jstDzqRtk1Q8J8OOimjeEadH1nAtSBeJYHGXotsZnEjMS0khoU7FHZn1zb/9QLvOOKDvpdtL+QFk2CXpblsi2LmBj7BS9y2W/UKQNaGQ1MeEjqgxTG5ecSw967rTsWZ3BVQi9r0liS0cOYVgL/g+77TPqZsZQbVPeo53R7dsrVtqX/NSKJlL1VcdOK2XelwaO81JV+u2sqzrPrQA1iXePZ69thwrb5PMvabj4TmTykjy2irND90FNEAorctey5LN2XgwrGt1UgCWiExrRczHgiOt1P+P0Rcge/be+ZvwGzI3o5HJdM5fcdp6eyfz7zUaQ3poPYR4ZKMn2x2pNueh5Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=082CBnKqQey2usj2e1lYqAFijkTNNrz6CRtE3R6EVEA=; b=UtuOYFCGLtSIHv/jI3a2vatGn3Mqy2bVXTL/xzT+r0deVhaVA2FZzH7obE3hNmemsEVsYqFpcbqkC8BjjEihX9pz2V/AMqiwHFA06audJLL8gXOs+Nlm2OY4paUWzp0a6MRIFbUp8dKf2KFSi929q6qjZrkF635pMrds37bBJ7HYfwUMCG7wqCEK6utkGfa/3YjYQz5uu1Q0J+KQE6e9iS64DrNZGqDYTbMdQsnZ6HlIMO1DxT3SbnUHwuyNussSM+ya46COtnOn/pKMEGoqJK7cN+mDyh3BNQShsMrf6a2fg8Wfnavz4kdQf51YdlJ5gaV4Bh3PjJgfZKOgKR6oUw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=082CBnKqQey2usj2e1lYqAFijkTNNrz6CRtE3R6EVEA=; b=k59mmxVfLjtDQSsjHVlPkesDTvTcFOFHORCGDEfFJZa9xajIf8j3PFP7JAzWllujFAY9U0CGqn5z5Mj8cE0x2TmRmAFKk9br4t+2b+qvPFvwytZbszX5uaCWbwSEOXUD9fmfHm6f7Ho8whrSTWzMmcCKAGBYaeZPBOKPMP3x0HEDP9Yq0sGb2m8rvi/AmkXCAIR2Z0liJXqaZ2rB5+FUWNmSLfN0CFM23+3KdMRwW+svVGP2DQ0WMNyKS/Q8GIyaV2vIUbBlam9w/Gh32YYvIP4y373F5kIT1p9OE2VubJ8Z62q5JkZa4rf7WMfchcjhWUiDP2rC20ts4MvrR4AFXQ== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from DU2PR04MB8822.eurprd04.prod.outlook.com (2603:10a6:10:2e1::11) by AM8PR04MB7875.eurprd04.prod.outlook.com (2603:10a6:20b:236::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7784.29; Fri, 26 Jul 2024 11:31:56 +0000 Received: from DU2PR04MB8822.eurprd04.prod.outlook.com ([fe80::4e24:c2c7:bd58:c5c7]) by DU2PR04MB8822.eurprd04.prod.outlook.com ([fe80::4e24:c2c7:bd58:c5c7%5]) with mapi id 15.20.7784.016; Fri, 26 Jul 2024 11:31:56 +0000 From: Xu Yang To: vkoul@kernel.org, kishon@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, gregkh@linuxfoundation.org, peter.chen@kernel.org, herve.codina@bootlin.com Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org, jun.li@nxp.com Subject: [PATCH v2 2/6] usb: phy: mxs: keep USBPHY2's clk always on Date: Fri, 26 Jul 2024 19:32:03 +0800 Message-Id: <20240726113207.3393247-2-xu.yang_2@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240726113207.3393247-1-xu.yang_2@nxp.com> References: <20240726113207.3393247-1-xu.yang_2@nxp.com> X-ClientProxiedBy: SI1PR02CA0047.apcprd02.prod.outlook.com (2603:1096:4:1f5::15) To DU2PR04MB8822.eurprd04.prod.outlook.com (2603:10a6:10:2e1::11) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8822:EE_|AM8PR04MB7875:EE_ X-MS-Office365-Filtering-Correlation-Id: 5966199e-628d-4282-1d00-08dcad668e4f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|366016|7416014|376014|921020|38350700014; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DU2PR04MB8822.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(52116014)(366016)(7416014)(376014)(921020)(38350700014);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: uQ+U5UugBJrEh9MdAh6qKZbftP+7+7mEIl/Sv5UxuJaSBGGa5DPu5fYzccfVra3bH5iXMySGl2RrMqd/8BCRW92pKZo5kM5hyPNwrMYmqxKj7s4Yuc3VboE/xjXHWGtrWOA6YCWMz55e/rZTYztCNaQGHH6t4VUpLPCE5whs1VWodINi1Kg7RJP8Cev7wVlUqdd1/z3J31KWPij/tN6O448wqYN9ochH7bn9n//TeGGS87jyBSqy3aJjzS2qF+ZPBt3cMdImvVgZMvOBOl3831YrxD9+Z1TjaJQF0cOiFIQN2Lc4bqu+TO8qI/hq0dSpUg4dAOi1p7fxHyuDcRrtnSZQO6Q0wvr9lxAObH3aI9dI3lmVgB1kXwTMbTyInC+KNU2fE5vYQ2mmqmpbn/TwF4qPdhJWvVsCGtOKL7qhBQH7EXSJC4i0tkOZUOm95AND/Fkv5UrJ1ZOYJH97K2+lBOfwRXk/jgdg6d7bCtxk50CpkBg+urN/o3Y/elbmQVH7o35XIhUUtAzhFu312xe2HXrNfB5RjKZ9WDsc86cxEyJs3RTS8oBqWhO68ioU03VroGor7QqGdoQW0GgKsVReH2birNtD8kI1OYlzOG7AXukqq/Lyr44esxKMxCOTeNgdGXbR0VEtru4mgKu3XTSM6MdRhbEhCw7DLrxCsTJlbUdAS350fgimXL4fZoq6c/VpMvIqY2kcAfLNchqPpsb+7WTv8O++xZd2comMtwXcYR/RtH+ivRaqACXhExNEIgzH17SiaK2er4yfjXBow4i8EsgDYEzkJGHTYQ2oyJwTo/urTFpAWIFEDu+ucejW01QhdRATYDOA//O/g/GQkFArOBN6zXp4ShnY0RXKq9Fch6WrtWQ3W2AccZyWJXrLNLuge7EHyXFhc+cBvV+o5ystoyW8PMpY1RxJREfRFKgjS4LVH84WuQHOatMyYAWH10UU+ZWf4fP20Wk39VndfShfpELoO29x1OOERr+O+yYaK+gtqNQkl6TwDzk+jdavbXQ2XE+mVQCUXjY1+JGWBNeCejw/RWnPqSApAabe6J72hm20lfBkOnfwLbQF8K4gsPD6BklwYBBz7IYWZPfleTBAiM+kNlTJb75yOG2KwKXDSc5+wuYQ7N5D6wPKwdz2SfVSBj6ttKqSSmM/bUUNVyNSIlA++8bNIwQVWrNCnBFxd0/H7JcfNgEVZA6dn7efLVtSU4IQufEsOkza76wRqqn67frj6mbJPm09Wvl2jcVvWvesIiSZT+3UvbownCS1V9+Ss18HOG/ncQPFlExqarqvuJQ0t6qdbY8nZEy6WN9OdOcnmzPVyuqxdQn7HjcAPYoAhX5TIKBaq3S5zWzWqPTqXIOuBSuKBkgOcN2QCyokgRZ7wysLGyQI5mplMZfzsafS3ZLhi7KFr5qbleaO9TnHA7Fq43hebqClHHXNsyIxpj00u1P57W4aH/vgLycs5v+x/XAYpOeGiK+9xn6GwYHAqxrcDk4Ow8ktvH4n5qa/cCQQZXgUw2BCLfnT5+9sLw77277wKzecrwF9TElO5AV+fZZzqiaQPS6fyQpo9JXpoMKDqdW05AfCyr6rrBjlBvdz X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5966199e-628d-4282-1d00-08dcad668e4f X-MS-Exchange-CrossTenant-AuthSource: DU2PR04MB8822.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Jul 2024 11:31:56.8755 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: /EfCex7wd4fDVy6sASvCibj4xVNdAUMSZ+jOGU6gPcrQ+AS6M1MCbcWEDDbDyX41cC3oinn+PfhAdU6CEwpAFw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM8PR04MB7875 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240726_043200_324595_326D901C X-CRM114-Status: GOOD ( 15.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org IP require keep USBPHY2's clk always on, so USBPHY2 (PLL7) power can be controlled by suspend signal. USB remote wakeup needs resume signal be sent out as soon as possible to match USB requirements. Signed-off-by: Xu Yang Reviewed-by: Peter Chen --- Changes in v2: - modify commit message - remove hardware_control_phy2_clk --- drivers/usb/phy/phy-mxs-usb.c | 33 ++++++++++++++++++++++++++------- 1 file changed, 26 insertions(+), 7 deletions(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index d9d29f0b37de..e172af75f602 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -150,6 +150,15 @@ #define MXS_PHY_TX_D_CAL_MIN 79 #define MXS_PHY_TX_D_CAL_MAX 119 +/* + * At imx6q/6sl/6sx, the PHY2's clock is controlled by hardware directly, + * eg, according to PHY's suspend status. In these PHYs, we only need to + * open the clock at the initialization and close it at its shutdown routine. + * These PHYs can send resume signal without software interfere if not + * gate clock. + */ +#define MXS_PHY_HARDWARE_CONTROL_PHY2_CLK BIT(4) + struct mxs_phy_data { unsigned int flags; }; @@ -161,12 +170,14 @@ static const struct mxs_phy_data imx23_phy_data = { static const struct mxs_phy_data imx6q_phy_data = { .flags = MXS_PHY_SENDING_SOF_TOO_FAST | MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | - MXS_PHY_NEED_IP_FIX, + MXS_PHY_NEED_IP_FIX | + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK, }; static const struct mxs_phy_data imx6sl_phy_data = { .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | - MXS_PHY_NEED_IP_FIX, + MXS_PHY_NEED_IP_FIX | + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK, }; static const struct mxs_phy_data vf610_phy_data = { @@ -175,7 +186,8 @@ static const struct mxs_phy_data vf610_phy_data = { }; static const struct mxs_phy_data imx6sx_phy_data = { - .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS, + .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK, }; static const struct mxs_phy_data imx6ul_phy_data = { @@ -518,12 +530,19 @@ static int mxs_phy_suspend(struct usb_phy *x, int suspend) } writel(BM_USBPHY_CTRL_CLKGATE, x->io_priv + HW_USBPHY_CTRL_SET); - clk_disable_unprepare(mxs_phy->clk); + if (!(mxs_phy->port_id == 1 && + (mxs_phy->data->flags & + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK))) + clk_disable_unprepare(mxs_phy->clk); } else { mxs_phy_clock_switch_delay(); - ret = clk_prepare_enable(mxs_phy->clk); - if (ret) - return ret; + if (!(mxs_phy->port_id == 1 && + (mxs_phy->data->flags & + MXS_PHY_HARDWARE_CONTROL_PHY2_CLK))) { + ret = clk_prepare_enable(mxs_phy->clk); + if (ret) + return ret; + } writel(BM_USBPHY_CTRL_CLKGATE, x->io_priv + HW_USBPHY_CTRL_CLR); writel(0, x->io_priv + HW_USBPHY_PWD);