From patchwork Tue Apr 16 21:53:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 10904229 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 AB1C613B5 for ; Tue, 16 Apr 2019 21:54:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 94AE228A0F for ; Tue, 16 Apr 2019 21:54:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8889228A16; Tue, 16 Apr 2019 21:54:34 +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 2831928A0F for ; Tue, 16 Apr 2019 21:54:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730671AbfDPVyO (ORCPT ); Tue, 16 Apr 2019 17:54:14 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:44098 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730596AbfDPVyN (ORCPT ); Tue, 16 Apr 2019 17:54:13 -0400 Received: by mail-pg1-f193.google.com with SMTP id i2so10967910pgj.11 for ; Tue, 16 Apr 2019 14:54:13 -0700 (PDT) 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 :mime-version:content-transfer-encoding; bh=XsFf4LEh0pktHURaMfPnlhrkOmI1Owbh5PPEFMjaE6c=; b=iAutK9hipedEuHpce3EVCQiVHg1QIADXgE6iqLm1r6d1fj7U2UxC7EQiQB9cxDi8Ii SfBS68X6Kezeq3ah8uFonHpSA+3J6bahOeI5qcPe3sJRjsHoOFtB8xueB7usSKAPIseB t4vRGdujBdSPadp44iYqSkCoHtvKGS+e621f4= 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:mime-version:content-transfer-encoding; bh=XsFf4LEh0pktHURaMfPnlhrkOmI1Owbh5PPEFMjaE6c=; b=iG/WAiuDX6kUSUAJ9/VQ4QTBCb61EXt/UZIPGvULHEJh6VGW/p8wHYgTHHK3Ag+zwc 5XyhxaCFXAEttRo6RIBt6JxEIQvsM6iv4d2lF670vFxyqLN+oc2hitnEdI3r5dsv/LAe QyjqVGSMiCI1ihwgFWXrRWb49/AEZq3tNGq3/2rqMUJuIvjlmaAb3RgVZ8KKxRKYho9n uQ9WWQPQ1JkDuI/7kImDY8Ayb7WY9IJboU2PL7npSqL/ECGBGmPh7sh3nwaF7BwA55MO e28JXC+Ws6ZxcGFpUM9/WA5+/lX+lVINcIh0KKsmUXCKSmOiM2VbzB5NjiRey//mw4GP 1Qaw== X-Gm-Message-State: APjAAAWCu9iotdfZY4pqvT/Fpe9UxMPRcWzJpsfqARjSGIxioAZPriL5 jYPwI+Ptx/prYJ1cSLuW7DsAog== X-Google-Smtp-Source: APXvYqx9Echs2wcQSIcKJnQgMM0GXGhmDvbnb5yHOmCUV3xMZ9JzJrqQ4WwBfzBGesIzMap8lN9mAQ== X-Received: by 2002:a63:4144:: with SMTP id o65mr75004207pga.241.1555451653028; Tue, 16 Apr 2019 14:54:13 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id b6sm8156770pgt.58.2019.04.16.14.54.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 Apr 2019 14:54:12 -0700 (PDT) From: Douglas Anderson To: Rob Herring , Minas Harutyunyan , Heiko Stuebner , Felipe Balbi Cc: amstan@chromium.org, linux-rockchip@lists.infradead.org, linux-usb@vger.kernel.org, Randy Li , mka@chromium.org, ryandcase@chromium.org, jwerner@chromium.org, Elaine Zhang , Douglas Anderson , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Mark Rutland Subject: [PATCH v2 1/4] dt-bindings: usb: dwc2: Document quirk to reset PHY upon wakeup Date: Tue, 16 Apr 2019 14:53:48 -0700 Message-Id: <20190416215351.242246-2-dianders@chromium.org> X-Mailer: git-send-email 2.21.0.593.g511ec345e18-goog In-Reply-To: <20190416215351.242246-1-dianders@chromium.org> References: <20190416215351.242246-1-dianders@chromium.org> MIME-Version: 1.0 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 On Rockchip rk3288 there's a hardware quirk where we need to assert the reset signal to the PHY when we get a remote wakeup on one of the two ports. Document this quirk in the bindings. Signed-off-by: Douglas Anderson Reviewed-by: Matthias Kaehlcke --- Changes in v2: None Documentation/devicetree/bindings/usb/dwc2.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt index 6dc3c4a34483..f70f3aee4bfc 100644 --- a/Documentation/devicetree/bindings/usb/dwc2.txt +++ b/Documentation/devicetree/bindings/usb/dwc2.txt @@ -37,6 +37,8 @@ Refer to phy/phy-bindings.txt for generic phy consumer properties - g-rx-fifo-size: size of rx fifo size in gadget mode. - g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode. - g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode. +- snps,reset-phy-on-wake: If present indicates that we need to reset the PHY when + we detect a wakeup. This is due to a hardware errata. Deprecated properties: - g-use-dma: gadget DMA mode is automatically detected From patchwork Tue Apr 16 21:53:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 10904227 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 15E031850 for ; Tue, 16 Apr 2019 21:54:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F133828535 for ; Tue, 16 Apr 2019 21:54:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E58BC28A0F; Tue, 16 Apr 2019 21:54:32 +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=unavailable 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 62FC528A0E for ; Tue, 16 Apr 2019 21:54:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730692AbfDPVyQ (ORCPT ); Tue, 16 Apr 2019 17:54:16 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:37945 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730670AbfDPVyP (ORCPT ); Tue, 16 Apr 2019 17:54:15 -0400 Received: by mail-pf1-f195.google.com with SMTP id 10so11060515pfo.5 for ; Tue, 16 Apr 2019 14:54:14 -0700 (PDT) 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 :mime-version:content-transfer-encoding; bh=NhuTBkbvTznNaFrq+/UUrhs6fQWEX2O1Uah2moqJDlM=; b=IjV8HYykawLHC7qSQF8ZCPMx2iXuKBbg6BrwsSdi/sqT47SwXT7yS/1daiZcQbYyEQ KAvZU3uR3Rj9qST+yJTgRatoMZxGub6HGOfObi6/qchoOc/cycdo2i3ljJ0AUIc3N4bk n1XYDraCquh0eaM6EmEVthxg/KhawnI/5vy4E= 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:mime-version:content-transfer-encoding; bh=NhuTBkbvTznNaFrq+/UUrhs6fQWEX2O1Uah2moqJDlM=; b=WHbMVqO27NypzcUmKGT8+jOV5cFQrGhD0U0kiOKS7fq4FmD7PiBTpH0bxMV2Y6DJK1 i9I5L4APr92jrL6O6GPHrwvSnkbY758Vh2vbvfymmbHflCCmcgg/Yl4B9IWuhgnQn90x FCyN7pFLw9tQf5vvW167pPIHQ2rriU6BBYhHdH1hgIPqw13tGglFVfFEAZ1RoqWR+Xhn mWizOZOCtW7Qw1aQNjtY3T3XbeygCj4G2ocXr6C2I+39LjaM74H/liKAr0AMK5lvcU/B /5LrGl5W8BWJ0sIfdjMkb0sEUeHBJ+/yapqbDupdqIxlL9C6YDhOgNeQxfHJXv694jYC FY5g== X-Gm-Message-State: APjAAAVlsdDvpLzqhs9MUObkH0v/UGojmHu9+nwlYAgeklOKz8FaU21/ FtikpQSLv+Coc9b6bgQGXYi1NA== X-Google-Smtp-Source: APXvYqwWfoKWZsdXqWpwL1pK8HNiauVy7bRxPDqc5xd2wCgGg0sCdZsMJe7mMKv0YKBeuGVe0i7uyg== X-Received: by 2002:a63:ef0a:: with SMTP id u10mr61563309pgh.199.1555451654170; Tue, 16 Apr 2019 14:54:14 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id b6sm8156770pgt.58.2019.04.16.14.54.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 Apr 2019 14:54:13 -0700 (PDT) From: Douglas Anderson To: Rob Herring , Minas Harutyunyan , Heiko Stuebner , Felipe Balbi Cc: amstan@chromium.org, linux-rockchip@lists.infradead.org, linux-usb@vger.kernel.org, Randy Li , mka@chromium.org, ryandcase@chromium.org, jwerner@chromium.org, Elaine Zhang , Douglas Anderson , Yunzhi Li , Greg Kroah-Hartman , linux-kernel@vger.kernel.org Subject: [PATCH v2 2/4] usb: dwc2: optionally assert phy reset when waking up Date: Tue, 16 Apr 2019 14:53:49 -0700 Message-Id: <20190416215351.242246-3-dianders@chromium.org> X-Mailer: git-send-email 2.21.0.593.g511ec345e18-goog In-Reply-To: <20190416215351.242246-1-dianders@chromium.org> References: <20190416215351.242246-1-dianders@chromium.org> MIME-Version: 1.0 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 On the rk3288 USB host-only port (the one that's not the OTG-enabled port) the PHY can get into a bad state when a wakeup is asserted (not just a wakeup from full system suspend but also a wakeup from autosuspend). We can get the PHY out of its bad state by asserting its "port reset", but unfortunately that seems to assert a reset onto the USB bus so it could confuse things if we don't actually deenumerate / reenumerate the device. We can also get the PHY out of its bad state by fully resetting it using the reset from the CRU (clock reset unit), which does a more full reset. The CRU-based reset appears to actually cause devices on the bus to be removed and reinserted, which fixes the problem (albeit in a hacky way). It's unfortunate that we need to do a full re-enumeration of devices at wakeup time, but this is better than alternative of letting the bus get wedged. Signed-off-by: Douglas Anderson Signed-off-by: Yunzhi Li --- Changes in v2: - Cancel the work when dwc2 is freed (Matthias). drivers/usb/dwc2/core.h | 5 +++++ drivers/usb/dwc2/core_intr.c | 12 ++++++++++++ drivers/usb/dwc2/hcd.c | 18 +++++++++++++++--- drivers/usb/dwc2/platform.c | 9 +++++++++ 4 files changed, 41 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 30bab8463c96..f30748f4fe7e 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -859,6 +859,8 @@ struct dwc2_hregs_backup { * @gadget_enabled: Peripheral mode sub-driver initialization indicator. * @ll_hw_enabled: Status of low-level hardware resources. * @hibernated: True if core is hibernated + * @reset_phy_on_wake: Quirk saying that we should assert PHY reset on a + * remote wakeup. * @frame_number: Frame number read from the core. For both device * and host modes. The value ranges are from 0 * to HFNUM_MAX_FRNUM. @@ -972,6 +974,7 @@ struct dwc2_hregs_backup { * @status_buf_dma: DMA address for status_buf * @start_work: Delayed work for handling host A-cable connection * @reset_work: Delayed work for handling a port reset + * @phy_reset_work: Work structure for doing a PHY reset * @otg_port: OTG port number * @frame_list: Frame list * @frame_list_dma: Frame list DMA address @@ -1045,6 +1048,7 @@ struct dwc2_hsotg { unsigned int gadget_enabled:1; unsigned int ll_hw_enabled:1; unsigned int hibernated:1; + unsigned int reset_phy_on_wake:1; u16 frame_number; struct phy *phy; @@ -1147,6 +1151,7 @@ struct dwc2_hsotg { struct delayed_work start_work; struct delayed_work reset_work; + struct work_struct phy_reset_work; u8 otg_port; u32 *frame_list; dma_addr_t frame_list_dma; diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 19ae2595f1c3..16ff33574116 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -435,6 +435,18 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg) /* Restart the Phy Clock */ pcgcctl &= ~PCGCTL_STOPPCLK; dwc2_writel(hsotg, pcgcctl, PCGCTL); + + /* + * If we've got this quirk then the PHY is stuck upon + * wakeup. Assert reset. This will propagate out and + * eventually we'll re-enumerate the device. Not great + * but the best we can do. We can't call phy_reset() + * at interrupt time but there's no hurry, so we'll + * schedule it for later. + */ + if (hsotg->reset_phy_on_wake) + schedule_work(&hsotg->phy_reset_work); + mod_timer(&hsotg->wkp_timer, jiffies + msecs_to_jiffies(71)); } else { diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 3f087962f498..e272d020012e 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -4376,6 +4376,17 @@ static void dwc2_hcd_reset_func(struct work_struct *work) spin_unlock_irqrestore(&hsotg->lock, flags); } +static void dwc2_hcd_phy_reset_func(struct work_struct *work) +{ + struct dwc2_hsotg *hsotg = container_of(work, struct dwc2_hsotg, + phy_reset_work); + int ret; + + ret = phy_reset(hsotg->phy); + if (ret) + dev_warn(hsotg->dev, "PHY reset failed\n"); +} + /* * ========================================================================= * Linux HC Driver Functions @@ -5130,6 +5141,8 @@ static void dwc2_hcd_free(struct dwc2_hsotg *hsotg) destroy_workqueue(hsotg->wq_otg); } + cancel_work_sync(&hsotg->phy_reset_work); + del_timer(&hsotg->wkp_timer); } @@ -5271,11 +5284,10 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg) hsotg->hc_ptr_array[i] = channel; } - /* Initialize hsotg start work */ + /* Initialize work */ INIT_DELAYED_WORK(&hsotg->start_work, dwc2_hcd_start_func); - - /* Initialize port reset work */ INIT_DELAYED_WORK(&hsotg->reset_work, dwc2_hcd_reset_func); + INIT_WORK(&hsotg->phy_reset_work, dwc2_hcd_phy_reset_func); /* * Allocate space for storing data on status transactions. Normally no diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index c0b64d483552..9b65b766e0b9 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -481,6 +481,15 @@ static int dwc2_driver_probe(struct platform_device *dev) hsotg->gadget_enabled = 1; } + hsotg->reset_phy_on_wake = + of_property_read_bool(dev->dev.of_node, + "snps,reset-phy-on-wake"); + if (hsotg->reset_phy_on_wake && !hsotg->phy) { + dev_warn(hsotg->dev, + "Quirk reset-phy-on-wake only supports generic PHYs\n"); + hsotg->reset_phy_on_wake = false; + } + if (hsotg->dr_mode != USB_DR_MODE_PERIPHERAL) { retval = dwc2_hcd_init(hsotg); if (retval) { From patchwork Tue Apr 16 21:53:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 10904221 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 D9C461850 for ; Tue, 16 Apr 2019 21:54:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C5BF828535 for ; Tue, 16 Apr 2019 21:54:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B96FA28A14; Tue, 16 Apr 2019 21:54:30 +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 6A12C28535 for ; Tue, 16 Apr 2019 21:54:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730725AbfDPVyR (ORCPT ); Tue, 16 Apr 2019 17:54:17 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:36898 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730677AbfDPVyQ (ORCPT ); Tue, 16 Apr 2019 17:54:16 -0400 Received: by mail-pl1-f193.google.com with SMTP id w23so10994012ply.4 for ; Tue, 16 Apr 2019 14:54:15 -0700 (PDT) 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 :mime-version:content-transfer-encoding; bh=JQcpLLY5KK4GVOCCGHD2Lb4pmJlBo3NKSgPvy82sxxs=; b=jet7qqlVkuzSyJBHgzdOZoBdkDRzb97FPPvS6OsfblhPaOgPly4QVhABda+QsNoBQK jSX0iOEXcTriDz+NlJkB35upNjg0ZfCLEuDRTmv+qErSFyncQ4yXwxyteneTHds73VxI +R8BqVW1892eo6PNlyEr32+pD7W05ojOAxm8w= 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:mime-version:content-transfer-encoding; bh=JQcpLLY5KK4GVOCCGHD2Lb4pmJlBo3NKSgPvy82sxxs=; b=Y6Vd8XgC42FgSuLuNljaCLQIlEO/2wxM9JLkIo5Q6GIpqjTPjqngoQ0x95XwOR1Vgd UnkLFDBScfPUl72oP1bXAx3G1yRLw9bTHuTvYh9rwGX2fIP3Cx9luAvOOvBVWSEUDFyi ag7/shkdXzF6k0ccMTYoFpwPQbVHRPGXciM4E4MJpD6Ob92xmOY5XU0zHfx6An/dff2A U75npo7GYKxxJZVOnFSeFtLDU1PlMQ1Y7SurvK2VHM9ONG44P+iGZ1DLrB4R3iXTrqaW Zoz8wQ54Xsz/biCuRxXvDoj58nLqm2Lhf5deBgoWgpT26c94l3RC3GYEQTt3npmq0xsE v9MA== X-Gm-Message-State: APjAAAWea5kXYpZhWdh0ZFzLd5m020pwwEI8xyZRSBRqeiXX+WIeTZlm +UZXxwpGAG6uJZFBcRHizppo1I6Ja10= X-Google-Smtp-Source: APXvYqwe5Q3sUUtcLGPdwFIhZi1gZhbtsybtUcA04et5Y4lRysaMcw+0xjOT5eMBQpQRdD8EFX89zg== X-Received: by 2002:a17:902:e302:: with SMTP id cg2mr81457671plb.285.1555451655465; Tue, 16 Apr 2019 14:54:15 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id b6sm8156770pgt.58.2019.04.16.14.54.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 Apr 2019 14:54:14 -0700 (PDT) From: Douglas Anderson To: Rob Herring , Minas Harutyunyan , Heiko Stuebner , Felipe Balbi Cc: amstan@chromium.org, linux-rockchip@lists.infradead.org, linux-usb@vger.kernel.org, Randy Li , mka@chromium.org, ryandcase@chromium.org, jwerner@chromium.org, Elaine Zhang , Douglas Anderson , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mark Rutland , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 3/4] ARM: dts: rockchip: Hook resets up to USB PHYs on rk3288. Date: Tue, 16 Apr 2019 14:53:50 -0700 Message-Id: <20190416215351.242246-4-dianders@chromium.org> X-Mailer: git-send-email 2.21.0.593.g511ec345e18-goog In-Reply-To: <20190416215351.242246-1-dianders@chromium.org> References: <20190416215351.242246-1-dianders@chromium.org> MIME-Version: 1.0 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 Let's hook up the resets to the three USB PHYs on rk3288 as per the bindings. This is in preparation for a future patch that will set the "snps,reset-phy-on-wake" on the host port. Signed-off-by: Douglas Anderson --- Changes in v2: None arch/arm/boot/dts/rk3288.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi index 74c9517c4f92..7e70ecf2b95a 100644 --- a/arch/arm/boot/dts/rk3288.dtsi +++ b/arch/arm/boot/dts/rk3288.dtsi @@ -909,6 +909,8 @@ clocks = <&cru SCLK_OTGPHY0>; clock-names = "phyclk"; #clock-cells = <0>; + resets = <&cru SRST_USBOTG_PHY>; + reset-names = "phy-reset"; }; usbphy1: usb-phy@334 { @@ -917,6 +919,8 @@ clocks = <&cru SCLK_OTGPHY1>; clock-names = "phyclk"; #clock-cells = <0>; + resets = <&cru SRST_USBHOST0_PHY>; + reset-names = "phy-reset"; }; usbphy2: usb-phy@348 { @@ -925,6 +929,8 @@ clocks = <&cru SCLK_OTGPHY2>; clock-names = "phyclk"; #clock-cells = <0>; + resets = <&cru SRST_USBHOST1_PHY>; + reset-names = "phy-reset"; }; }; }; From patchwork Tue Apr 16 21:53:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 10904219 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 2B8381515 for ; Tue, 16 Apr 2019 21:54:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 159D928535 for ; Tue, 16 Apr 2019 21:54:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 05AA928A0F; Tue, 16 Apr 2019 21:54:30 +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 AE8C328535 for ; Tue, 16 Apr 2019 21:54:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728806AbfDPVy1 (ORCPT ); Tue, 16 Apr 2019 17:54:27 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:44103 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730715AbfDPVyR (ORCPT ); Tue, 16 Apr 2019 17:54:17 -0400 Received: by mail-pg1-f195.google.com with SMTP id i2so10967987pgj.11 for ; Tue, 16 Apr 2019 14:54:17 -0700 (PDT) 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 :mime-version:content-transfer-encoding; bh=cWXcwUO99R4dLB/IuZUC9gJlZE5FQWRDL44srQDPsqk=; b=ejBtaPnR9q05b/fAPX24cAvnXMkUKl8dv74zXRQ/flOfxwW2g+52dgsY64NuNdME22 uPRaVNQIDZwDLbenk3fXkr5sCpbUoQQx3iz6VI/N4wTVQq5I+lf9isXR5BnHdcl04m0i qMRY/ItYRRoO2Pj+l2mtAwkwcK8tNs2AKNPyA= 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:mime-version:content-transfer-encoding; bh=cWXcwUO99R4dLB/IuZUC9gJlZE5FQWRDL44srQDPsqk=; b=ZFYqeteurCn5YjBSUh5evTUtO5Cd+8kPvVRqFWg9mxOYgs/VstzksuYjp68za5xCVB lma+jTiiW1tgS3caowvXgYQj2Kq2n5lsLR3HTqfouJxh/gwZ6uRB1I1iV3pSKOp7S5w3 A9qJUrpZas//ORv98Dg7ZqGf7mg2jKFfAnQnHwGjHLbisi0is48qSx2nlroeMikZQI+4 qlWrwdZbKbhpWJDzfdCCdVbtk/LIUUbAqaWIdZc2z/Q5Xaqq1x9OGLlFR3yHcanKV2iu K2EvcF7shlsTs2Bu7lsZW0mXucuzd3qHromeeAHNz/CcDq1RI1wmfHiMY20kEtVxLOnX XkbA== X-Gm-Message-State: APjAAAXOGupIJgkZl0ig3yP6HY606bT0kjv68QLPT5WXYXPt1h2uNuZ0 +jHFV+9z2fpwzYZnVrRjNWwpzw== X-Google-Smtp-Source: APXvYqxxdYR0fLJUpsHaTgteMM1jkatPh1TgL1h1tZn2iyQSTF5t4CnY+DzCpefDu9PaKb6nKGydpA== X-Received: by 2002:a63:af0a:: with SMTP id w10mr54056203pge.67.1555451656875; Tue, 16 Apr 2019 14:54:16 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id b6sm8156770pgt.58.2019.04.16.14.54.15 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 Apr 2019 14:54:16 -0700 (PDT) From: Douglas Anderson To: Rob Herring , Minas Harutyunyan , Heiko Stuebner , Felipe Balbi Cc: amstan@chromium.org, linux-rockchip@lists.infradead.org, linux-usb@vger.kernel.org, Randy Li , mka@chromium.org, ryandcase@chromium.org, jwerner@chromium.org, Elaine Zhang , Douglas Anderson , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mark Rutland , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 4/4] ARM: dts: rockchip: Add quirk for resetting rk3288's dwc2 host on wakeup Date: Tue, 16 Apr 2019 14:53:51 -0700 Message-Id: <20190416215351.242246-5-dianders@chromium.org> X-Mailer: git-send-email 2.21.0.593.g511ec345e18-goog In-Reply-To: <20190416215351.242246-1-dianders@chromium.org> References: <20190416215351.242246-1-dianders@chromium.org> MIME-Version: 1.0 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 The "host" USB port on rk3288 has a hardware errata where we've got to assert a PHY reset whenever we see a remote wakeup. Add that quirk property to the device tree. Signed-off-by: Douglas Anderson Reviewed-by: Matthias Kaehlcke --- Changes in v2: None arch/arm/boot/dts/rk3288.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi index 7e70ecf2b95a..aa017abf4f42 100644 --- a/arch/arm/boot/dts/rk3288.dtsi +++ b/arch/arm/boot/dts/rk3288.dtsi @@ -621,6 +621,7 @@ dr_mode = "host"; phys = <&usbphy2>; phy-names = "usb2-phy"; + snps,reset-phy-on-wake; status = "disabled"; };