From mboxrd@z Thu Jan 1 00:00:00 1970 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 F15FECF2572 for ; Sat, 12 Oct 2024 17:37:22 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=sXEUjUa4SPET02vNTXU5p5ITW8x3DmGQo2bQUHPs1sQ=; b=LL0/HwYS8UzcGhLKb9syt2Fqid 0byRWwGcQgMXrIJbKPZQvmyxfr5iiSzzjGq23sv/GstLKjHdcKoB8BqEfZxyIVklwFzgtIPMMqU7S qwepJ0Li0a3U+i+b9nDafIYwYy7YREAzxvH/2vNwfFTpXNkFFTqI7ovb0RqgQatGWlnWfrnmZQWwv HbkEnHXOE1c0UwFwHqAt2spHY7sw91Yy05psNR0FyE9SmDb7McLdxXMNw0IdFd1hz8NOS6ZZ1/pww KuBYHmTdTH2f/xlgrqbTyJKvmuk5yDK0wy1vZtkKqckl+i766wWFwHigvnoM6fCiAx8xblOtl1Mvj /92JMn5Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1szg3A-00000001Ygw-0QqA; Sat, 12 Oct 2024 17:37:08 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1szg1l-00000001YWE-43aV; Sat, 12 Oct 2024 17:35:43 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 649255C4DAF; Sat, 12 Oct 2024 17:35:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8EAF8C4CEC6; Sat, 12 Oct 2024 17:35:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728754540; bh=FUj3m7AxwKhLtalglvHoMqNJU6DbmtxgHK1NyIs6RcE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=pqvg0FvxCGiQuZMNtxbF4TyokIAWf4Hg79BMflKEdfKw7Caj5+5ycLeJMn3QBXXuu fHEAaRDcLutjB4jesWjt2XEmWwoYBmXBhOuvxBbbzFaBqiVE61CXV/W+p9Q4x41EPK A5hCJLF0UwM8AK3KbKIUozTMuOjuRy1kP3422JnPe9w2jd3njjTpK5hD53erQz4AS8 tjD1XVYIlSgMMNLIyhvo5oEJkUIcoyWtz/BhSsrFHIfJmlrO8xtu/Ld/AxAgkbnrYa cVH654pGqdpPuMGL2LR9hFQMuw+3A+VvulMumunCHNfsdF1rIXYumtbniMj2WJwXh9 2X9AHxlxpThqg== Date: Sat, 12 Oct 2024 23:05:36 +0530 From: Vinod Koul To: Xu Yang Cc: 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, 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: Re: [PATCH v7 1/3] phy: fsl-imx8mq-usb: add tca function driver for imx95 Message-ID: References: <20241010090822.3915064-1-xu.yang_2@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241010090822.3915064-1-xu.yang_2@nxp.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241012_103542_132630_90476E23 X-CRM114-Status: GOOD ( 35.65 ) 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 On 10-10-24, 17:08, Xu Yang wrote: > The i.MX95 USB3 phy has a Type-C Assist block (TCA). This block consists > two functional blocks (XBar assist and VBus assist) and one system > access interface using APB. > > The primary functionality of XBar assist is: > - switching lane for flip > - moving unused lanes into lower power states. > > This info can be get from: > i.MX95 RM Chapter 163.3.8 Type-C assist (TCA) block. > > This will add support for TCA block to achieve lane switching and tca > lower power functionality. > > Signed-off-by: Xu Yang > Reviewed-by: Jun Li > > --- > Changes in v2: > - return the value of imx95_usb_phy_get_tca() > Changes in v3: > - no changes > Changes in v4: > - remove compatible check for imx95 > - check whether tca register region exist or not, yes means has tca, > otherwise skip tca setup > Changes in v5: > - no changes > Changes in v6: > - no changes > Changes in v7: > - fix sparse warnings in imx95_usb_phy_get_tca() > --- > drivers/phy/freescale/Kconfig | 1 + > drivers/phy/freescale/phy-fsl-imx8mq-usb.c | 243 +++++++++++++++++++++ > 2 files changed, 244 insertions(+) > > diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig > index dcd9acff6d01..81f53564ee15 100644 > --- a/drivers/phy/freescale/Kconfig > +++ b/drivers/phy/freescale/Kconfig > @@ -5,6 +5,7 @@ if (ARCH_MXC && ARM64) || COMPILE_TEST > config PHY_FSL_IMX8MQ_USB > tristate "Freescale i.MX8M USB3 PHY" > depends on OF && HAS_IOMEM > + depends on TYPEC || TYPEC=n > select GENERIC_PHY > default ARCH_MXC && ARM64 > > diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c > index adc6394626ce..661191276b27 100644 > --- a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c > +++ b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c > @@ -10,6 +10,7 @@ > #include > #include > #include > +#include > > #define PHY_CTRL0 0x0 > #define PHY_CTRL0_REF_SSP_EN BIT(2) > @@ -50,11 +51,66 @@ > > #define PHY_TUNE_DEFAULT 0xffffffff > > +#define TCA_CLK_RST 0x00 > +#define TCA_CLK_RST_SW BIT(9) > +#define TCA_CLK_RST_REF_CLK_EN BIT(1) > +#define TCA_CLK_RST_SUSPEND_CLK_EN BIT(0) > + > +#define TCA_INTR_EN 0x04 > +#define TCA_INTR_STS 0x08 > + > +#define TCA_GCFG 0x10 > +#define TCA_GCFG_ROLE_HSTDEV BIT(4) > +#define TCA_GCFG_OP_MODE GENMASK(1, 0) > +#define TCA_GCFG_OP_MODE_SYSMODE 0 > +#define TCA_GCFG_OP_MODE_SYNCMODE 1 > + > +#define TCA_TCPC 0x14 > +#define TCA_TCPC_VALID BIT(4) > +#define TCA_TCPC_LOW_POWER_EN BIT(3) > +#define TCA_TCPC_ORIENTATION_NORMAL BIT(2) > +#define TCA_TCPC_MUX_CONTRL GENMASK(1, 0) > +#define TCA_TCPC_MUX_CONTRL_NO_CONN 0 > +#define TCA_TCPC_MUX_CONTRL_USB_CONN 1 > + > +#define TCA_SYSMODE_CFG 0x18 > +#define TCA_SYSMODE_TCPC_DISABLE BIT(3) > +#define TCA_SYSMODE_TCPC_FLIP BIT(2) > + > +#define TCA_CTRLSYNCMODE_CFG0 0x20 > +#define TCA_CTRLSYNCMODE_CFG1 0x20 > + > +#define TCA_PSTATE 0x30 > +#define TCA_PSTATE_CM_STS BIT(4) > +#define TCA_PSTATE_TX_STS BIT(3) > +#define TCA_PSTATE_RX_PLL_STS BIT(2) > +#define TCA_PSTATE_PIPE0_POWER_DOWN GENMASK(1, 0) > + > +#define TCA_GEN_STATUS 0x34 > +#define TCA_GEN_DEV_POR BIT(12) > +#define TCA_GEN_REF_CLK_SEL BIT(8) > +#define TCA_GEN_TYPEC_FLIP_INVERT BIT(4) > +#define TCA_GEN_PHY_TYPEC_DISABLE BIT(3) > +#define TCA_GEN_PHY_TYPEC_FLIP BIT(2) > + > +#define TCA_VBUS_CTRL 0x40 > +#define TCA_VBUS_STATUS 0x44 > + > +#define TCA_INFO 0xFC lowercase please > + > +struct tca_blk { > + struct typec_switch_dev *sw; > + void __iomem *base; > + struct mutex mutex; > + enum typec_orientation orientation; > +}; > + > struct imx8mq_usb_phy { > struct phy *phy; > struct clk *clk; > void __iomem *base; > struct regulator *vbus; > + struct tca_blk *tca; > u32 pcs_tx_swing_full; > u32 pcs_tx_deemph_3p5db; > u32 tx_vref_tune; > @@ -64,6 +120,175 @@ struct imx8mq_usb_phy { > u32 comp_dis_tune; > }; > > + > +static void tca_blk_orientation_set(struct tca_blk *tca, > + enum typec_orientation orientation); > + > +#ifdef CONFIG_TYPEC > + > +static int tca_blk_typec_switch_set(struct typec_switch_dev *sw, > + enum typec_orientation orientation) > +{ > + struct imx8mq_usb_phy *imx_phy = typec_switch_get_drvdata(sw); > + struct tca_blk *tca = imx_phy->tca; > + int ret; > + > + if (tca->orientation == orientation) > + return 0; > + > + ret = clk_prepare_enable(imx_phy->clk); > + if (ret) > + return ret; > + > + tca_blk_orientation_set(tca, orientation); > + clk_disable_unprepare(imx_phy->clk); > + > + return 0; > +} > + > +static struct typec_switch_dev *tca_blk_get_typec_switch(struct platform_device *pdev, > + struct imx8mq_usb_phy *imx_phy) > +{ > + struct device *dev = &pdev->dev; > + struct typec_switch_dev *sw; > + struct typec_switch_desc sw_desc = { }; > + > + sw_desc.drvdata = imx_phy; > + sw_desc.fwnode = dev->fwnode; > + sw_desc.set = tca_blk_typec_switch_set; > + sw_desc.name = NULL; > + > + sw = typec_switch_register(dev, &sw_desc); > + if (IS_ERR(sw)) { > + dev_err(dev, "Error register tca orientation switch: %ld", > + PTR_ERR(sw)); > + return NULL; > + } > + > + return sw; > +} > + > +static void tca_blk_put_typec_switch(struct typec_switch_dev *sw) > +{ > + typec_switch_unregister(sw); > +} Why to put a wrapper over an API, call this instead? > + > +#else > + > +static struct typec_switch_dev *tca_blk_get_typec_switch(struct platform_device *pdev, > + struct imx8mq_usb_phy *imx_phy) > +{ > + return NULL; > +} > + > +static void tca_blk_put_typec_switch(struct typec_switch_dev *sw) {} > + > +#endif /* CONFIG_TYPEC */ > + > +static void tca_blk_orientation_set(struct tca_blk *tca, > + enum typec_orientation orientation) > +{ > + u32 val; > + > + mutex_lock(&tca->mutex); > + > + if (orientation == TYPEC_ORIENTATION_NONE) { > + /* > + * use Controller Synced Mode for TCA low power enable and > + * put PHY to USB safe state. > + */ > + val = readl(tca->base + TCA_GCFG); > + val = FIELD_PREP(TCA_GCFG_OP_MODE, TCA_GCFG_OP_MODE_SYNCMODE); > + writel(val, tca->base + TCA_GCFG); > + > + val = readl(tca->base + TCA_TCPC); > + val = TCA_TCPC_VALID | TCA_TCPC_LOW_POWER_EN; > + writel(val, tca->base + TCA_TCPC); > + > + goto out; > + } > + > + /* use System Configuration Mode for TCA mux control. */ > + val = readl(tca->base + TCA_GCFG); > + val = FIELD_PREP(TCA_GCFG_OP_MODE, TCA_GCFG_OP_MODE_SYSMODE); > + writel(val, tca->base + TCA_GCFG); > + > + /* Disable TCA module */ > + val = readl(tca->base + TCA_SYSMODE_CFG); > + val |= TCA_SYSMODE_TCPC_DISABLE; > + writel(val, tca->base + TCA_SYSMODE_CFG); > + > + if (orientation == TYPEC_ORIENTATION_REVERSE) > + val |= TCA_SYSMODE_TCPC_FLIP; > + else if (orientation == TYPEC_ORIENTATION_NORMAL) > + val &= ~TCA_SYSMODE_TCPC_FLIP; > + > + writel(val, tca->base + TCA_SYSMODE_CFG); > + > + /* Enable TCA module */ > + val &= ~TCA_SYSMODE_TCPC_DISABLE; > + writel(val, tca->base + TCA_SYSMODE_CFG); > + > +out: > + tca->orientation = orientation; > + mutex_unlock(&tca->mutex); > +} > + > +static void tca_blk_init(struct tca_blk *tca) > +{ > + u32 val; > + > + /* reset XBar block */ > + val = readl(tca->base + TCA_CLK_RST); > + val &= ~TCA_CLK_RST_SW; > + writel(val, tca->base + TCA_CLK_RST); > + > + udelay(100); > + > + /* clear reset */ > + val |= TCA_CLK_RST_SW; > + writel(val, tca->base + TCA_CLK_RST); > + > + tca_blk_orientation_set(tca, tca->orientation); > +} > + > +static struct tca_blk *imx95_usb_phy_get_tca(struct platform_device *pdev, > + struct imx8mq_usb_phy *imx_phy) > +{ > + struct device *dev = &pdev->dev; > + struct resource *res; > + struct tca_blk *tca; > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); > + if (!res) > + return NULL; > + > + tca = devm_kzalloc(dev, sizeof(*tca), GFP_KERNEL); > + if (!tca) > + return ERR_PTR(-ENOMEM); > + > + tca->base = devm_ioremap_resource(&pdev->dev, res); > + if (IS_ERR(tca->base)) > + return ERR_CAST(tca->base); > + > + mutex_init(&tca->mutex); > + > + tca->orientation = TYPEC_ORIENTATION_NORMAL; > + tca->sw = tca_blk_get_typec_switch(pdev, imx_phy); > + > + return tca; > +} > + > +static void imx95_usb_phy_put_tca(struct imx8mq_usb_phy *imx_phy) > +{ > + struct tca_blk *tca = imx_phy->tca; > + > + if (!tca) > + return; > + > + tca_blk_put_typec_switch(tca->sw); > +} > + > static u32 phy_tx_vref_tune_from_property(u32 percent) > { > percent = clamp(percent, 94U, 124U); > @@ -315,6 +540,9 @@ static int imx8mp_usb_phy_init(struct phy *phy) > > imx8m_phy_tune(imx_phy); > > + if (imx_phy->tca) > + tca_blk_init(imx_phy->tca); > + > return 0; > } > > @@ -359,6 +587,8 @@ static const struct of_device_id imx8mq_usb_phy_of_match[] = { > .data = &imx8mq_usb_phy_ops,}, > {.compatible = "fsl,imx8mp-usb-phy", > .data = &imx8mp_usb_phy_ops,}, > + {.compatible = "fsl,imx95-usb-phy", > + .data = &imx8mp_usb_phy_ops,}, > { } > }; > MODULE_DEVICE_TABLE(of, imx8mq_usb_phy_of_match); > @@ -398,6 +628,11 @@ static int imx8mq_usb_phy_probe(struct platform_device *pdev) > > phy_set_drvdata(imx_phy->phy, imx_phy); > > + imx_phy->tca = imx95_usb_phy_get_tca(pdev, imx_phy); > + if (IS_ERR(imx_phy->tca)) > + return dev_err_probe(dev, PTR_ERR(imx_phy->tca), > + "failed to get tca\n"); > + > imx8m_get_phy_tuning_data(imx_phy); > > phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); > @@ -405,8 +640,16 @@ static int imx8mq_usb_phy_probe(struct platform_device *pdev) > return PTR_ERR_OR_ZERO(phy_provider); > } > > +static void imx8mq_usb_phy_remove(struct platform_device *pdev) > +{ > + struct imx8mq_usb_phy *imx_phy = platform_get_drvdata(pdev); > + > + imx95_usb_phy_put_tca(imx_phy); > +} > + > static struct platform_driver imx8mq_usb_phy_driver = { > .probe = imx8mq_usb_phy_probe, > + .remove = imx8mq_usb_phy_remove, > .driver = { > .name = "imx8mq-usb-phy", > .of_match_table = imx8mq_usb_phy_of_match, > -- > 2.34.1 -- ~Vinod