From patchwork Fri Feb 16 12:09:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Enric Balletbo i Serra X-Patchwork-Id: 10224597 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 57283603EE for ; Fri, 16 Feb 2018 12:12:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 46E9E28D21 for ; Fri, 16 Feb 2018 12:12:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3B74428EC0; Fri, 16 Feb 2018 12:12:17 +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=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 98A1228D21 for ; Fri, 16 Feb 2018 12:12:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=VRQRe4AVCdiLUwnaHIv3MZkCrrevO2xXxsq3vm1Qopw=; b=J8rx2iRJb1lXzOZ7YuZjLqDTgx j2iFo7xDIWI7PUBG/jJXcKsAxPfBdlfTJhtacJPCP8SqE8YLQH0Slp7EodRWhTGMScMsGq87588V9 IoZMuJBlAfwu2m3GLAaH9FpAhrHVA1bbL0G6XistgBBLLjnuNSFqabvP/xld/IR76LgCueQdww8pw c58klM3D+iunHD1EfY1LUsIK2MSGbnN2/DOsq5Gktso77D6WVVCrJzmOy5ROh8c9dBn+ogt6wDBal idi67Ns8KZ+NrfZYWbMsuD5gXE1zwd6teg0MnRDn9qLqPRIovZvBaNaB0GgnbTXasNXfhcD95lKBy L+Gy7/Og==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1emes4-0007Bs-C7; Fri, 16 Feb 2018 12:12:08 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1emeqM-0004eb-BT; Fri, 16 Feb 2018 12:10:24 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id B85E92751C7 From: Enric Balletbo i Serra To: Rob Herring , Kishon Vijay Abraham I , Brian Norris Subject: [PATCH v3 4/6] phy: rockchip-typec: force to USB2 if DP at 4 lanes mode Date: Fri, 16 Feb 2018 13:09:54 +0100 Message-Id: <20180216120956.19034-4-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180216120956.19034-1-enric.balletbo@collabora.com> References: <20180216120956.19034-1-enric.balletbo@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180216_041022_601395_4F86B094 X-CRM114-Status: GOOD ( 12.13 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, hl@rock-chips.com, dianders@chromium.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Chris Zhong , William wu , kernel@collabora.com, linux-arm-kernel@lists.infradead.org, Heiko Stuebner MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Chris Zhong The usb3tousb2_en BIT will be clear to 0 in probe(), it make USB controller work at USB3 mode, and if the USB phy is turned on with DP only mode(4 lanes DP), the rockchip_usb3_phy_power_on() will return directly, so usb3_host_disable and usb3_host_port these 2 BIT will keep a same value as coreboot. In coreboot, these 3 BITs are set as USB2 mode, but now one of the bits is changed to USB3, it make USB controller work at a unknown status. These 3 BITs should be changed to USB2, if the Type-C works at 4 lanes mode, and then switch it back to USB3 mode, when USB disconnect. Signed-off-by: Chris Zhong Signed-off-by: Enric Balletbo i Serra Reviewed-by: Heiko Stuebner --- Changes since v2: - None. Changes since v1: - Use the registers offsets from the driver not the DT. drivers/phy/rockchip/phy-rockchip-typec.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 54dc52a948ef..9bc4d4bd46d3 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -853,6 +853,18 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy) return mode; } +static int tcphy_cfg_usb3_to_usb2_only(struct rockchip_typec_phy *tcphy, + bool value) +{ + struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs; + + property_enable(tcphy, &cfg->usb3tousb2_en, value); + property_enable(tcphy, &cfg->usb3_host_disable, value); + property_enable(tcphy, &cfg->usb3_host_port, !value); + + return 0; +} + static int rockchip_usb3_phy_power_on(struct phy *phy) { struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); @@ -870,8 +882,10 @@ static int rockchip_usb3_phy_power_on(struct phy *phy) } /* DP-only mode; fall back to USB2 */ - if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB))) + if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB))) { + tcphy_cfg_usb3_to_usb2_only(tcphy, true); goto unlock_ret; + } if (tcphy->mode == new_mode) goto unlock_ret; @@ -887,9 +901,9 @@ static int rockchip_usb3_phy_power_on(struct phy *phy) regmap_read(tcphy->grf_regs, reg->offset, &val); if (!(val & BIT(reg->enable_bit))) { tcphy->mode |= new_mode & (MODE_DFP_USB | MODE_UFP_USB); + /* enable usb3 host */ - property_enable(tcphy, &cfg->usb3_host_disable, 0); - property_enable(tcphy, &cfg->usb3_host_port, 1); + tcphy_cfg_usb3_to_usb2_only(tcphy, false); goto unlock_ret; } usleep_range(10, 20); @@ -910,6 +924,7 @@ static int rockchip_usb3_phy_power_off(struct phy *phy) struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); mutex_lock(&tcphy->lock); + tcphy_cfg_usb3_to_usb2_only(tcphy, false); if (tcphy->mode == MODE_DISCONNECT) goto unlock;