From patchwork Mon Apr 11 07:41:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q2h1bmZlbmcgWXVuICjkupHmmKXls7Ap?= X-Patchwork-Id: 8797521 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 172729F3D1 for ; Mon, 11 Apr 2016 07:52:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id F1EF4201B4 for ; Mon, 11 Apr 2016 07:52:51 +0000 (UTC) Received: from bombadil.infradead.org (unknown [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0216120256 for ; Mon, 11 Apr 2016 07:52:51 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1apWVH-0005Ej-J6; Mon, 11 Apr 2016 07:43:23 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1apWTz-0004P9-FN; Mon, 11 Apr 2016 07:42:08 +0000 Received: from mtkhts07.mediatek.inc [(172.21.101.69)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 697404719; Mon, 11 Apr 2016 15:41:36 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkhts07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.266.1; Mon, 11 Apr 2016 15:41:14 +0800 From: Chunfeng Yun To: Kishon Vijay Abraham I Subject: [PATCH v2 2/2] phy: phy-mt65xx-usb3: add support for mt2701 platform Date: Mon, 11 Apr 2016 15:41:30 +0800 Message-ID: <1460360490-18606-2-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1460360490-18606-1-git-send-email-chunfeng.yun@mediatek.com> References: <1460360490-18606-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160411_004204_233557_3768D863 X-CRM114-Status: GOOD ( 21.13 ) X-Spam-Score: -1.1 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Chunfeng Yun , linux-usb@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-3.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RDNS_NONE,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP A new compatible string, "mediatek,mt2701-u3phy", is added. Some register settings to avoid RX sensitivity level degradation which may arise on mt8173 platform are separated from other platforms. Signed-off-by: Chunfeng Yun --- drivers/phy/Kconfig | 5 ++- drivers/phy/phy-mt65xx-usb3.c | 77 ++++++++++++++++++++++++++++------------- 2 files changed, 54 insertions(+), 28 deletions(-) diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 26566db..3037f28 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -218,9 +218,8 @@ config PHY_MT65XX_USB3 depends on ARCH_MEDIATEK && OF select GENERIC_PHY help - Say 'Y' here to add support for Mediatek USB3.0 PHY driver - for mt65xx SoCs. it supports two usb2.0 ports and - one usb3.0 port. + Say 'Y' here to add support for Mediatek USB3.0 PHY driver, + it supports multiple usb2.0 and usb3.0 ports. config PHY_HI6220_USB tristate "hi6220 USB PHY support" diff --git a/drivers/phy/phy-mt65xx-usb3.c b/drivers/phy/phy-mt65xx-usb3.c index c0e7b4b..4d85e73 100644 --- a/drivers/phy/phy-mt65xx-usb3.c +++ b/drivers/phy/phy-mt65xx-usb3.c @@ -134,6 +134,11 @@ #define U3P_SR_COEF_DIVISOR 1000 #define U3P_FM_DET_CYCLE_CNT 1024 +struct mt65xx_phy_pdata { + /* avoid RX sensitivity level degradation only for mt8173 */ + bool avoid_rx_sen_degradation; +}; + struct mt65xx_phy_instance { struct phy *phy; void __iomem *port_base; @@ -145,6 +150,7 @@ struct mt65xx_u3phy { struct device *dev; void __iomem *sif_base; /* include sif2, but exclude port's */ struct clk *u3phya_ref; /* reference clock of usb3 anolog phy */ + const struct mt65xx_phy_pdata *pdata; struct mt65xx_phy_instance **phys; int nphys; }; @@ -241,22 +247,26 @@ static void phy_instance_init(struct mt65xx_u3phy *u3phy, tmp = readl(port_base + U3P_U2PHYACR4); tmp &= ~P2C_U2_GPIO_CTR_MSK; writel(tmp, port_base + U3P_U2PHYACR4); + } - tmp = readl(port_base + U3P_USBPHYACR2); - tmp |= PA2_RG_SIF_U2PLL_FORCE_EN; - writel(tmp, port_base + U3P_USBPHYACR2); - - tmp = readl(port_base + U3D_U2PHYDCR0); - tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON; - writel(tmp, port_base + U3D_U2PHYDCR0); - } else { - tmp = readl(port_base + U3D_U2PHYDCR0); - tmp |= P2C_RG_SIF_U2PLL_FORCE_ON; - writel(tmp, port_base + U3D_U2PHYDCR0); - - tmp = readl(port_base + U3P_U2PHYDTM0); - tmp |= P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM; - writel(tmp, port_base + U3P_U2PHYDTM0); + if (u3phy->pdata->avoid_rx_sen_degradation) { + if (!index) { + tmp = readl(port_base + U3P_USBPHYACR2); + tmp |= PA2_RG_SIF_U2PLL_FORCE_EN; + writel(tmp, port_base + U3P_USBPHYACR2); + + tmp = readl(port_base + U3D_U2PHYDCR0); + tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON; + writel(tmp, port_base + U3D_U2PHYDCR0); + } else { + tmp = readl(port_base + U3D_U2PHYDCR0); + tmp |= P2C_RG_SIF_U2PLL_FORCE_ON; + writel(tmp, port_base + U3D_U2PHYDCR0); + + tmp = readl(port_base + U3P_U2PHYDTM0); + tmp |= P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM; + writel(tmp, port_base + U3P_U2PHYDTM0); + } } tmp = readl(port_base + U3P_USBPHYACR6); @@ -318,7 +328,7 @@ static void phy_instance_power_on(struct mt65xx_u3phy *u3phy, tmp |= XC3_RG_U3_XTAL_RX_PWD | XC3_RG_U3_FRC_XTAL_RX_PWD; writel(tmp, u3phy->sif_base + U3P_XTALCTL3); - /* [mt8173]switch 100uA current to SSUSB */ + /* switch 100uA current to SSUSB */ tmp = readl(port_base + U3P_USBPHYACR5); tmp |= PA5_RG_U2_HS_100U_U3_EN; writel(tmp, port_base + U3P_USBPHYACR5); @@ -335,7 +345,7 @@ static void phy_instance_power_on(struct mt65xx_u3phy *u3phy, tmp |= PA5_RG_U2_HSTX_SRCTRL_VAL(4); writel(tmp, port_base + U3P_USBPHYACR5); - if (index) { + if (u3phy->pdata->avoid_rx_sen_degradation && index) { tmp = readl(port_base + U3D_U2PHYDCR0); tmp |= P2C_RG_SIF_U2PLL_FORCE_ON; writel(tmp, port_base + U3D_U2PHYDCR0); @@ -386,7 +396,9 @@ static void phy_instance_power_off(struct mt65xx_u3phy *u3phy, tmp = readl(port_base + U3P_U3_PHYA_REG0); tmp &= ~P3A_RG_U3_VUSB10_ON; writel(tmp, port_base + U3P_U3_PHYA_REG0); - } else { + } + + if (u3phy->pdata->avoid_rx_sen_degradation && index) { tmp = readl(port_base + U3D_U2PHYDCR0); tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON; writel(tmp, port_base + U3D_U2PHYDCR0); @@ -402,7 +414,7 @@ static void phy_instance_exit(struct mt65xx_u3phy *u3phy, u32 index = instance->index; u32 tmp; - if (index) { + if (u3phy->pdata->avoid_rx_sen_degradation && index) { tmp = readl(port_base + U3D_U2PHYDCR0); tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON; writel(tmp, port_base + U3D_U2PHYDCR0); @@ -502,8 +514,24 @@ static struct phy_ops mt65xx_u3phy_ops = { .owner = THIS_MODULE, }; +static const struct mt65xx_phy_pdata mt2701_pdata = { + .avoid_rx_sen_degradation = false, +}; + +static const struct mt65xx_phy_pdata mt8173_pdata = { + .avoid_rx_sen_degradation = true, +}; + +static const struct of_device_id mt65xx_u3phy_id_table[] = { + { .compatible = "mediatek,mt2701-u3phy", .data = &mt2701_pdata }, + { .compatible = "mediatek,mt8173-u3phy", .data = &mt8173_pdata }, + { }, +}; +MODULE_DEVICE_TABLE(of, mt65xx_u3phy_id_table); + static int mt65xx_u3phy_probe(struct platform_device *pdev) { + const struct of_device_id *match; struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; struct device_node *child_np; @@ -513,10 +541,15 @@ static int mt65xx_u3phy_probe(struct platform_device *pdev) struct resource res; int port, retval; + match = of_match_node(mt65xx_u3phy_id_table, pdev->dev.of_node); + if (!match) + return -EINVAL; + u3phy = devm_kzalloc(dev, sizeof(*u3phy), GFP_KERNEL); if (!u3phy) return -ENOMEM; + u3phy->pdata = match->data; u3phy->nphys = of_get_child_count(np); u3phy->phys = devm_kcalloc(dev, u3phy->nphys, sizeof(*u3phy->phys), GFP_KERNEL); @@ -587,12 +620,6 @@ put_child: return retval; } -static const struct of_device_id mt65xx_u3phy_id_table[] = { - { .compatible = "mediatek,mt8173-u3phy", }, - { }, -}; -MODULE_DEVICE_TABLE(of, mt65xx_u3phy_id_table); - static struct platform_driver mt65xx_u3phy_driver = { .probe = mt65xx_u3phy_probe, .driver = {