From patchwork Wed Nov 28 09:53:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Yi Wang X-Patchwork-Id: 10702205 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ADB25109C for ; Wed, 28 Nov 2018 09:54:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D467C2C3D9 for ; Wed, 28 Nov 2018 09:54:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C8C802C5B0; Wed, 28 Nov 2018 09:54:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7617A2C3D9 for ; Wed, 28 Nov 2018 09:54:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728164AbeK1UzH (ORCPT ); Wed, 28 Nov 2018 15:55:07 -0500 Received: from mail-pf1-f195.google.com ([209.85.210.195]:43887 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727382AbeK1UzG (ORCPT ); Wed, 28 Nov 2018 15:55:06 -0500 Received: by mail-pf1-f195.google.com with SMTP id w73so9913084pfk.10 for ; Wed, 28 Nov 2018 01:54:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=phuOQIHhtaiR8GKkWxLxlxfb87tGYPgu+E8hPrCYdbs=; b=jbgq0hX/OBEwP9H7k7pO2RwzvNfpvBVKnjj80CGRXEdMwt9Y/1vhBdGPxhL292ua2g LKTgHYfYER+ZLzOMfQhCwfA40Q82Q+c4Y9knDBVM15zD/b7Ol2jlfAqLs0a2LdRps/v9 jzMGR9cyccdeJ+hp2/k4XzzBVqqZJSBJQduCs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=phuOQIHhtaiR8GKkWxLxlxfb87tGYPgu+E8hPrCYdbs=; b=FYoghHGkUMY/kqq3c5J2upgkHOOnWZecKgJYNWjqnleFVo2/g2ozCvtyf0IUe77AGo JyuYPLspZslTYy/iWJ6ARMhU+76Xk2L1qKScmbdl9tE6isUwleu4MIH/HnMHuYLCp9yB wTxFiOsX2PCgYxtVUhyzaAhNnX3ZFjISqyTH14hEFcJkeOwM+ZFzfpn92ek1aDK5zVMl 1BheOPrgnvMAmot/c/ESNRh1t/6/fruXcJkYcswrmHbSdxjo82TQW+0lKhBqIz7d+6Ri SsWwR8U8KBXHmyxzm+TNVkH/kUcxMFaGbIPHIIIcoZl67MBZj6On45YI0N9D13/xVAE0 G3uw== X-Gm-Message-State: AA+aEWbv8UgFBpI4AWQ9L9yi+R8wZfCPGBrpDV3Kv558Vh4suO6gSl6y qNAB5HOM4R0dXsuMmxBsfI83DA== X-Google-Smtp-Source: AFSGD/U6fm79MyS8kX8LQgobST9zhr3DlMly+JetZVc4psrEkCAiLkRG75+VGUt+EtDzk64sNRfl7g== X-Received: by 2002:a62:6e07:: with SMTP id j7mr20472163pfc.135.1543398842768; Wed, 28 Nov 2018 01:54:02 -0800 (PST) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:b852:bd51:9305:4261]) by smtp.gmail.com with ESMTPSA id r130sm11223806pfr.48.2018.11.28.01.54.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 28 Nov 2018 01:54:02 -0800 (PST) From: "Hsin-Yi, Wang" To: linux-arm-kernel@lists.infradead.org Cc: Chunfeng Yun , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [V3] usb/mtu3: power down device ip at setup Date: Wed, 28 Nov 2018 17:53:58 +0800 Message-Id: <20181128095358.42498-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20181128092953.41541-1-hsinyi@chromium.org> References: <20181128092953.41541-1-hsinyi@chromium.org> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Originally, when dr_mode is USB_DR_MODE_HOST, it didn't power down device ip, so host ip sleep will fail at ssusb_host_disable. Power down device ip at ssusb_host_setup. Signed-off-by: Hsin-Yi, Wang --- drivers/usb/mtu3/mtu3_plat.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c index 46551f6d16fd..792c420fd4ad 100644 --- a/drivers/usb/mtu3/mtu3_plat.c +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -200,6 +200,13 @@ static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb) mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); udelay(1); mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); + + /* + * device ip maybe poweron in LK/BROM stage before enter kernel stage; + * power down device ip, otherwise ip-sleep will fail when works as host + * only mode + */ + mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); } /* ignore the error if the clock does not exist */