From patchwork Fri Jan 4 16:53:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Smirnov X-Patchwork-Id: 10748517 X-Patchwork-Delegate: bhelgaas@google.com 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 ED58B91E for ; Fri, 4 Jan 2019 16:54:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DB5802621B for ; Fri, 4 Jan 2019 16:54:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C9E8928751; Fri, 4 Jan 2019 16:54:27 +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,FREEMAIL_FROM,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 BB5D928742 for ; Fri, 4 Jan 2019 16:54:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728140AbfADQyA (ORCPT ); Fri, 4 Jan 2019 11:54:00 -0500 Received: from mail-pl1-f193.google.com ([209.85.214.193]:41358 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726053AbfADQx7 (ORCPT ); Fri, 4 Jan 2019 11:53:59 -0500 Received: by mail-pl1-f193.google.com with SMTP id u6so17666661plm.8; Fri, 04 Jan 2019 08:53:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=V71ESkwkT2zYZktwYGjC1d8wlM//aQPO8lMe2StOgno=; b=u3at20Qq45fOPjioOaQF53KaHlM8R9Qb0g3c38azZTz4CZeyDn844E+rV2drHJE7vp 3/+cW5W8BzJ/daOrujhKC79optDF6dDJntFm5B6ahkwzhgtyW1aJCWz8+ec5fh4+mGM+ GptgfgTHirixTH6vGmOqyv8EEasIxdKvQlgQiPEE0TISih0wUOFujQB6N+xEpFCsPSNS domw3WRy5ccsyqtDv0mm5BcO49yWBzX3EgyRCt3v8zhuwDUeC44KVkWZcMVGmzRetIuK tVtO+DCE4qQoWAQMsOhKPRQDW8HpXZqiWsvY9yFmNuyQdvR7ou7RArUc/wg/BrSTxwSw 0Sfg== 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=V71ESkwkT2zYZktwYGjC1d8wlM//aQPO8lMe2StOgno=; b=DUgtcaMkAa8s0AOjiGvB+yQY1cIeb3jRy+CDgGlK/6Fqr/1yQlOrB5I8DokwKBVch8 6Qw7VX+k0Hj1pBI4RaQo+GVigtzCywAe6M9a/WkLcdSz7Zp8o97jqPq8i7l1JUIE4lfZ E0F6ufMe7YFOMugpGA7pgWZSWhawiFz0WUsP04fSlqQsFfQC5/4Adw1GZ4pQmDOtjfHc MgmvOUr7UjkKRkXQCiX0TKUGbTFkkcgHOY6LEPop4Fk27sEi35Le7CKNxNNU2tZ8ov8f jrcPUMTER+/kIL2ulxHZlnh0XIuDX9epQZ6loKZQqxlpjWZyw6CN40eIhH7IuYC0hTqi JNfQ== X-Gm-Message-State: AJcUukdA1JE2eM2Q1HuIXEMpn+6S0OI1YVRtigurZZ9zhFyjGojPIhwB TTtUSO0soXakyylwyxBl0zI= X-Google-Smtp-Source: ALg8bN7Z1nkOoZK8BlMJwq3+VLRYyn/6omkFUJFsmSBM6pYHx+M8Yrr/7GrdM1XGaBS9jdZ04sp0vQ== X-Received: by 2002:a17:902:5601:: with SMTP id h1mr52930439pli.160.1546620838249; Fri, 04 Jan 2019 08:53:58 -0800 (PST) Received: from squirtle.lan (c-24-22-235-96.hsd1.wa.comcast.net. [24.22.235.96]) by smtp.gmail.com with ESMTPSA id p67sm101900564pfg.44.2019.01.04.08.53.56 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 04 Jan 2019 08:53:57 -0800 (PST) From: Andrey Smirnov To: Lorenzo Pieralisi Cc: Andrey Smirnov , Bjorn Helgaas , Fabio Estevam , Chris Healy , Lucas Stach , Leonard Crestez , "A.s. Dong" , Richard Zhu , linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Stefan Agner Subject: [PATCH v4 1/4] PCI: imx6: introduce drvdata Date: Fri, 4 Jan 2019 08:53:32 -0800 Message-Id: <20190104165335.13205-2-andrew.smirnov@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190104165335.13205-1-andrew.smirnov@gmail.com> References: <20190104165335.13205-1-andrew.smirnov@gmail.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce driver data struct. This will simplify handling of device specific differences. Cc: Bjorn Helgaas Cc: Fabio Estevam Cc: Chris Healy Cc: Lucas Stach Cc: Leonard Crestez Cc: "A.s. Dong" Cc: Richard Zhu Cc: linux-imx@nxp.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-pci@vger.kernel.org Signed-off-by: Stefan Agner Reviewed-by: Lucas Stach [andrew.smirnov@gmail.com reformatted drvdata, to simplify future diffs] Signed-off-by: Andrey Smirnov --- drivers/pci/controller/dwc/pci-imx6.c | 56 ++++++++++++++++++--------- 1 file changed, 37 insertions(+), 19 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 25a2b7683e55..efff3d5e9162 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -41,6 +41,10 @@ enum imx6_pcie_variants { IMX7D, }; +struct imx6_pcie_drvdata { + enum imx6_pcie_variants variant; +}; + struct imx6_pcie { struct dw_pcie *pci; int reset_gpio; @@ -53,7 +57,6 @@ struct imx6_pcie { struct reset_control *pciephy_reset; struct reset_control *apps_reset; struct reset_control *turnoff_reset; - enum imx6_pcie_variants variant; u32 tx_deemph_gen1; u32 tx_deemph_gen2_3p5db; u32 tx_deemph_gen2_6db; @@ -66,6 +69,7 @@ struct imx6_pcie { struct device *pd_pcie; /* power domain for pcie phy */ struct device *pd_pcie_phy; + const struct imx6_pcie_drvdata *drvdata; }; /* Parameters for the waiting for PCIe PHY PLL to lock on i.MX7 */ @@ -340,7 +344,7 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) { struct device *dev = imx6_pcie->pci->dev; - switch (imx6_pcie->variant) { + switch (imx6_pcie->drvdata->variant) { case IMX7D: reset_control_assert(imx6_pcie->pciephy_reset); reset_control_assert(imx6_pcie->apps_reset); @@ -382,7 +386,7 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) struct device *dev = pci->dev; int ret = 0; - switch (imx6_pcie->variant) { + switch (imx6_pcie->drvdata->variant) { case IMX6SX: ret = clk_prepare_enable(imx6_pcie->pcie_inbound_axi); if (ret) { @@ -485,7 +489,7 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) !imx6_pcie->gpio_active_high); } - switch (imx6_pcie->variant) { + switch (imx6_pcie->drvdata->variant) { case IMX7D: reset_control_deassert(imx6_pcie->pciephy_reset); imx7d_pcie_wait_for_phy_pll_lock(imx6_pcie); @@ -523,7 +527,7 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) { - switch (imx6_pcie->variant) { + switch (imx6_pcie->drvdata->variant) { case IMX7D: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0); @@ -645,7 +649,7 @@ static void imx6_pcie_ltssm_enable(struct device *dev) { struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); - switch (imx6_pcie->variant) { + switch (imx6_pcie->drvdata->variant) { case IMX6Q: case IMX6SX: case IMX6QP: @@ -698,7 +702,7 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie) tmp |= PORT_LOGIC_SPEED_CHANGE; dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, tmp); - if (imx6_pcie->variant != IMX7D) { + if (imx6_pcie->drvdata->variant != IMX7D) { /* * On i.MX7, DIRECT_SPEED_CHANGE behaves differently * from i.MX6 family when no link speed transition @@ -801,7 +805,7 @@ static void imx6_pcie_ltssm_disable(struct device *dev) { struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); - switch (imx6_pcie->variant) { + switch (imx6_pcie->drvdata->variant) { case IMX6SX: case IMX6QP: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, @@ -827,7 +831,7 @@ static void imx6_pcie_pm_turnoff(struct imx6_pcie *imx6_pcie) } /* Others poke directly at IOMUXC registers */ - switch (imx6_pcie->variant) { + switch (imx6_pcie->drvdata->variant) { case IMX6SX: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX6SX_GPR12_PCIE_PM_TURN_OFF, @@ -857,7 +861,7 @@ static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie) clk_disable_unprepare(imx6_pcie->pcie_phy); clk_disable_unprepare(imx6_pcie->pcie_bus); - switch (imx6_pcie->variant) { + switch (imx6_pcie->drvdata->variant) { case IMX6SX: clk_disable_unprepare(imx6_pcie->pcie_inbound_axi); break; @@ -873,8 +877,8 @@ static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie) static inline bool imx6_pcie_supports_suspend(struct imx6_pcie *imx6_pcie) { - return (imx6_pcie->variant == IMX7D || - imx6_pcie->variant == IMX6SX); + return (imx6_pcie->drvdata->variant == IMX7D || + imx6_pcie->drvdata->variant == IMX6SX); } static int imx6_pcie_suspend_noirq(struct device *dev) @@ -939,8 +943,7 @@ static int imx6_pcie_probe(struct platform_device *pdev) pci->ops = &dw_pcie_ops; imx6_pcie->pci = pci; - imx6_pcie->variant = - (enum imx6_pcie_variants)of_device_get_match_data(dev); + imx6_pcie->drvdata = of_device_get_match_data(dev); dbi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0); pci->dbi_base = devm_ioremap_resource(dev, dbi_base); @@ -984,7 +987,7 @@ static int imx6_pcie_probe(struct platform_device *pdev) return PTR_ERR(imx6_pcie->pcie); } - switch (imx6_pcie->variant) { + switch (imx6_pcie->drvdata->variant) { case IMX6SX: imx6_pcie->pcie_inbound_axi = devm_clk_get(dev, "pcie_inbound_axi"); @@ -1082,11 +1085,26 @@ static void imx6_pcie_shutdown(struct platform_device *pdev) imx6_pcie_assert_core_reset(imx6_pcie); } +static const struct imx6_pcie_drvdata drvdata[] = { + [IMX6Q] = { + .variant = IMX6Q, + }, + [IMX6SX] = { + .variant = IMX6SX, + }, + [IMX6QP] = { + .variant = IMX6QP, + }, + [IMX7D] = { + .variant = IMX7D, + }, +}; + static const struct of_device_id imx6_pcie_of_match[] = { - { .compatible = "fsl,imx6q-pcie", .data = (void *)IMX6Q, }, - { .compatible = "fsl,imx6sx-pcie", .data = (void *)IMX6SX, }, - { .compatible = "fsl,imx6qp-pcie", .data = (void *)IMX6QP, }, - { .compatible = "fsl,imx7d-pcie", .data = (void *)IMX7D, }, + { .compatible = "fsl,imx6q-pcie", .data = &drvdata[IMX6Q], }, + { .compatible = "fsl,imx6sx-pcie", .data = &drvdata[IMX6SX], }, + { .compatible = "fsl,imx6qp-pcie", .data = &drvdata[IMX6QP], }, + { .compatible = "fsl,imx7d-pcie", .data = &drvdata[IMX7D], }, {}, }; From patchwork Fri Jan 4 16:53:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Smirnov X-Patchwork-Id: 10748511 X-Patchwork-Delegate: bhelgaas@google.com 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 1C87691E for ; 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[24.22.235.96]) by smtp.gmail.com with ESMTPSA id p67sm101900564pfg.44.2019.01.04.08.53.58 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 04 Jan 2019 08:53:59 -0800 (PST) From: Andrey Smirnov To: Lorenzo Pieralisi Cc: Andrey Smirnov , Trent Piepho , Lucas Stach , Bjorn Helgaas , Fabio Estevam , Chris Healy , Leonard Crestez , "A.s. Dong" , Richard Zhu , linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH v4 2/4] PCI: imx6: Mark PHY functions as i.MX6 specific Date: Fri, 4 Jan 2019 08:53:33 -0800 Message-Id: <20190104165335.13205-3-andrew.smirnov@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190104165335.13205-1-andrew.smirnov@gmail.com> References: <20190104165335.13205-1-andrew.smirnov@gmail.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP PCIE PHY IP block on i.MX7D differs from the one used on i.MX6 family, so none of the code in current implementation of imx6_setup_phy_mpll() is applicable. Tested-by: Trent Piepho Signed-off-by: Andrey Smirnov Reviewed-by: Lucas Stach Cc: Bjorn Helgaas Cc: Fabio Estevam Cc: Chris Healy Cc: Lucas Stach Cc: Leonard Crestez Cc: "A.s. Dong" Cc: Richard Zhu Cc: linux-imx@nxp.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-pci@vger.kernel.org --- drivers/pci/controller/dwc/pci-imx6.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index efff3d5e9162..c55d93c1187d 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -41,8 +41,11 @@ enum imx6_pcie_variants { IMX7D, }; +#define IMX6_PCIE_FLAG_IMX6_PHY BIT(0) + struct imx6_pcie_drvdata { enum imx6_pcie_variants variant; + u32 flags; }; struct imx6_pcie { @@ -256,6 +259,9 @@ static void imx6_pcie_reset_phy(struct imx6_pcie *imx6_pcie) { u32 tmp; + if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_IMX6_PHY)) + return; + pcie_phy_read(imx6_pcie, PHY_RX_OVRD_IN_LO, &tmp); tmp |= (PHY_RX_OVRD_IN_LO_RX_DATA_EN | PHY_RX_OVRD_IN_LO_RX_PLL_EN); @@ -573,6 +579,9 @@ static int imx6_setup_phy_mpll(struct imx6_pcie *imx6_pcie) int mult, div; u32 val; + if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_IMX6_PHY)) + return 0; + switch (phy_rate) { case 125000000: /* @@ -1088,12 +1097,15 @@ static void imx6_pcie_shutdown(struct platform_device *pdev) static const struct imx6_pcie_drvdata drvdata[] = { [IMX6Q] = { .variant = IMX6Q, + .flags = IMX6_PCIE_FLAG_IMX6_PHY, }, [IMX6SX] = { .variant = IMX6SX, + .flags = IMX6_PCIE_FLAG_IMX6_PHY, }, [IMX6QP] = { .variant = IMX6QP, + .flags = IMX6_PCIE_FLAG_IMX6_PHY, }, [IMX7D] = { .variant = IMX7D, From patchwork Fri Jan 4 16:53:34 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Smirnov X-Patchwork-Id: 10748507 X-Patchwork-Delegate: bhelgaas@google.com 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 05B7413B5 for ; Fri, 4 Jan 2019 16:54:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA0D925404 for ; Fri, 4 Jan 2019 16:54:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DE3AC27480; Fri, 4 Jan 2019 16:54:15 +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,FREEMAIL_FROM,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 8056625404 for ; Fri, 4 Jan 2019 16:54:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728186AbfADQyD (ORCPT ); Fri, 4 Jan 2019 11:54:03 -0500 Received: from mail-pg1-f194.google.com ([209.85.215.194]:37686 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726053AbfADQyD (ORCPT ); Fri, 4 Jan 2019 11:54:03 -0500 Received: by mail-pg1-f194.google.com with SMTP id c25so17730311pgb.4; Fri, 04 Jan 2019 08:54:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=wen/FB8xaUFRJwJXXt0R071jVcMb73q9WaXaVpXXDfA=; b=FePXJ2vyM0DPkriOlPZTp3kGEMXUHOGovkdT6hC8rn+HKoNeujx++uYJMfMzgBBvDp w5XToiAKE9P7QsjAklDWWhRt+NvmubYgPXDCznK7vsTcZRXROEUsWb6vATZXvPJY0ySj I7CKvojal83UJMbnVs9pHzSuDOCo8EGQtcsnpfdhKnFa+Tgo2hYHP5DGL+lLwZV1/SvK /bd0QgFNH6yjd15uQfgTgpWcsnAYzDHgZF4l2plr8lajr3+UBM/KDTQUB6J7Hl2byY+2 B3t09mRJhpi80/wqD+zcIlJmhVy349ZQObFmXRYzgJpjrN8bdc+pOsswHjPuH4yITtc/ ku/g== 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=wen/FB8xaUFRJwJXXt0R071jVcMb73q9WaXaVpXXDfA=; b=h6Afq14oM88KcqIBUcGieDPScrwgQxSD76dKPtBRquOS9p3m3f2c5lMJzumau/WI9D z1K62sf0x0JJgD/Z+8v8tBZPdMW/U0O9NrpLMARtyBhWKfuvobPsP+ploe+E+9oWcqpX bHKGMF/V+QliNtLLRN3FPa72+4fcAScRI8nljg/EQuLsSlLkFiQS5PQaeRohlwagCBhn bV3jJDXxDKNCGraeMJUjJeyJIfVlhH1FTAhjYlRCBOYVfeNOxvG90LFg2SjsrBhRAWC4 xh42EfQY17xYw3FCCll+nRFi3AS7vbJHMMlBpu3kGR8rev4PX7sXgVH2aBY+b3noDpfM cM9g== X-Gm-Message-State: AJcUukd0OU6xn26cOH1G9VP9BH+7vAws2JBxI+Bszsn4Ab1zpZ/J4lVe I9UlV6EBGrtJxxA51kUUMXk= X-Google-Smtp-Source: ALg8bN6axIlHUN8YBoIZXHGhmJez6SO7ebOJKVW8lj+LNj2C7gYLbQAgjUtkWDm5S1tno2aj3Y9X7A== X-Received: by 2002:a63:1013:: with SMTP id f19mr2283258pgl.38.1546620841974; Fri, 04 Jan 2019 08:54:01 -0800 (PST) Received: from squirtle.lan (c-24-22-235-96.hsd1.wa.comcast.net. [24.22.235.96]) by smtp.gmail.com with ESMTPSA id p67sm101900564pfg.44.2019.01.04.08.54.00 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 04 Jan 2019 08:54:01 -0800 (PST) From: Andrey Smirnov To: Lorenzo Pieralisi Cc: Andrey Smirnov , Bjorn Helgaas , Fabio Estevam , Chris Healy , Lucas Stach , Leonard Crestez , "A.s. Dong" , Richard Zhu , linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH v4 3/4] PCI: imx6: Convert DIRECT_SPEED_CHANGE quirk code to use a flag Date: Fri, 4 Jan 2019 08:53:34 -0800 Message-Id: <20190104165335.13205-4-andrew.smirnov@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190104165335.13205-1-andrew.smirnov@gmail.com> References: <20190104165335.13205-1-andrew.smirnov@gmail.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Both i.MX7D and i.MX8MQ have the same behaviour when it comes to clearing DIRECT_SPEED_CHANGE bit when no speed change occur. To account for that change the code handling that to use a generic flag instead of checking IP block variant. Cc: Bjorn Helgaas Cc: Fabio Estevam Cc: Chris Healy Cc: Lucas Stach Cc: Leonard Crestez Cc: "A.s. Dong" Cc: Richard Zhu Cc: linux-imx@nxp.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-pci@vger.kernel.org Signed-off-by: Andrey Smirnov Reviewed-by: Lucas Stach --- drivers/pci/controller/dwc/pci-imx6.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index c55d93c1187d..75ee0cd7af3b 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -42,6 +42,7 @@ enum imx6_pcie_variants { }; #define IMX6_PCIE_FLAG_IMX6_PHY BIT(0) +#define IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE BIT(1) struct imx6_pcie_drvdata { enum imx6_pcie_variants variant; @@ -711,7 +712,8 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie) tmp |= PORT_LOGIC_SPEED_CHANGE; dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, tmp); - if (imx6_pcie->drvdata->variant != IMX7D) { + if (imx6_pcie->drvdata->flags & + IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE) { /* * On i.MX7, DIRECT_SPEED_CHANGE behaves differently * from i.MX6 family when no link speed transition @@ -1097,15 +1099,18 @@ static void imx6_pcie_shutdown(struct platform_device *pdev) static const struct imx6_pcie_drvdata drvdata[] = { [IMX6Q] = { .variant = IMX6Q, - .flags = IMX6_PCIE_FLAG_IMX6_PHY, + .flags = IMX6_PCIE_FLAG_IMX6_PHY | + IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE, }, [IMX6SX] = { .variant = IMX6SX, - .flags = IMX6_PCIE_FLAG_IMX6_PHY, + .flags = IMX6_PCIE_FLAG_IMX6_PHY | + IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE, }, [IMX6QP] = { .variant = IMX6QP, - .flags = IMX6_PCIE_FLAG_IMX6_PHY, + .flags = IMX6_PCIE_FLAG_IMX6_PHY | + IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE, }, [IMX7D] = { .variant = IMX7D, From patchwork Fri Jan 4 16:53:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Smirnov X-Patchwork-Id: 10748505 X-Patchwork-Delegate: bhelgaas@google.com 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 DEE6D91E for ; Fri, 4 Jan 2019 16:54:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CF01525404 for ; Fri, 4 Jan 2019 16:54:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C300727165; Fri, 4 Jan 2019 16:54:14 +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,FREEMAIL_FROM,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 EBF7D25404 for ; Fri, 4 Jan 2019 16:54:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728231AbfADQyH (ORCPT ); Fri, 4 Jan 2019 11:54:07 -0500 Received: from mail-pf1-f193.google.com ([209.85.210.193]:44101 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726053AbfADQyH (ORCPT ); Fri, 4 Jan 2019 11:54:07 -0500 Received: by mail-pf1-f193.google.com with SMTP id u6so18549301pfh.11; Fri, 04 Jan 2019 08:54:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=OX9yEw/EzWSLeSFn1ySFJppr6Ii+NiFwe6bv0mtmPM8=; b=UT3y+53cUTDyTaGaTHabAArYc7uwNCeh2pabftaSt0uFubEf5HXjq7YplkIgwFFKpP eUrGrpR4jxbxB1pm0OB7YqNARzCk+kcWKvJjRBAqhHfVif8znHqA8cDNxe3qpccnzoHR yfE/t5pvs6df+pcG3D71Zgco6OY4YxO82TVc9wkabbLT3jHxsGg+aGGDql8TJWyeVgfg VN1xxwV1dUwgfh3VFsF7sJDQc2keVC49qMsIWxARYAhZq8zxzJ4PNNFv7sxwCJQgURCG kgu1hWeYgV3q1ppu36q3xqegrU6MsrkfxG4OdyYj83IyP1J7YBUZdveFEd6Kpo/8Z+xm vPPQ== 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=OX9yEw/EzWSLeSFn1ySFJppr6Ii+NiFwe6bv0mtmPM8=; b=ENx5eFApoHRVBnUR2dRoUnJi8xRUMHepoULfCy9Tkv89tb1qDQLRYWp+/oLZLvULfS 2muuNyQ0O62L5e0HAWA3FTxwCA8jNkNXqW+E3YzhEjaCyLbcU+GlNgNT94dMt4DFJbDl NFh+DpAFsyVJJxtqvLX8rIM9W3OJB7J/6IGnvykm+V4qR6goBrF5gRQoZps7hfEil++E gvMnboJXjPzP2d7hodsSkG7BoIAFEmo2LBPKs7XwRnIs1ibX2ewn20SWBoIfSATXFaqm BmyaYw/yDtZnPps0+XNyViLf03G63Cn+CjasaB1O6wWI11hDHdsxR1jNpi7xbav6LJMV lq2w== X-Gm-Message-State: AJcUukd16wACjYIuaB1XJT4wFySZ2060Kbo+bC1S+jrKVRoJqCq91DAk FI9sYUCafy0/C0NfkpfWXTM= X-Google-Smtp-Source: ALg8bN56TqKrrdQyT7npgeROpELsCU9jv3ujyiHZkXu+LLYk/O3ufz+3xN2UrbioyPRTmpJQpx/I2A== X-Received: by 2002:a63:77ce:: with SMTP id s197mr2250387pgc.89.1546620843992; Fri, 04 Jan 2019 08:54:03 -0800 (PST) Received: from squirtle.lan (c-24-22-235-96.hsd1.wa.comcast.net. [24.22.235.96]) by smtp.gmail.com with ESMTPSA id p67sm101900564pfg.44.2019.01.04.08.54.02 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 04 Jan 2019 08:54:03 -0800 (PST) From: Andrey Smirnov To: Lorenzo Pieralisi Cc: Andrey Smirnov , Bjorn Helgaas , Fabio Estevam , Chris Healy , Lucas Stach , Leonard Crestez , "A.s. Dong" , Richard Zhu , Rob Herring , devicetree@vger.kernel.org, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH v4 4/4] PCI: imx6: Add support for i.MX8MQ Date: Fri, 4 Jan 2019 08:53:35 -0800 Message-Id: <20190104165335.13205-5-andrew.smirnov@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190104165335.13205-1-andrew.smirnov@gmail.com> References: <20190104165335.13205-1-andrew.smirnov@gmail.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add code needed to support i.MX8MQ variant. Cc: Bjorn Helgaas Cc: Fabio Estevam Cc: Chris Healy Cc: Lucas Stach Cc: Leonard Crestez Cc: "A.s. Dong" Cc: Richard Zhu Cc: Rob Herring , Cc: devicetree@vger.kernel.org, Cc: linux-imx@nxp.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-pci@vger.kernel.org Signed-off-by: Andrey Smirnov Reviewed-by: Lucas Stach --- .../bindings/pci/fsl,imx6q-pcie.txt | 3 +- drivers/pci/controller/dwc/Kconfig | 4 +- drivers/pci/controller/dwc/pci-imx6.c | 77 ++++++++++++++++++- 3 files changed, 79 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt index d514c1f2365f..920ca93870a8 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt @@ -9,6 +9,7 @@ Required properties: - "fsl,imx6sx-pcie", - "fsl,imx6qp-pcie" - "fsl,imx7d-pcie" + - "fsl,imx8mq-pcie" - reg: base address and length of the PCIe controller - interrupts: A list of interrupt outputs of the controller. Must contain an entry for each entry in the interrupt-names property. @@ -45,7 +46,7 @@ Additional required properties for imx6sx-pcie: PCIE_PHY power domains - power-domain-names: Must be "pcie", "pcie_phy" -Additional required properties for imx7d-pcie: +Additional required properties for imx7d-pcie and imx8mq-pcie: - power-domains: Must be set to a phandle pointing to PCIE_PHY power domain - resets: Must contain phandles to PCIe-related reset lines exposed by SRC IP block diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig index 6aafec3fad00..83ea318ad989 100644 --- a/drivers/pci/controller/dwc/Kconfig +++ b/drivers/pci/controller/dwc/Kconfig @@ -89,8 +89,8 @@ config PCI_EXYNOS select PCIE_DW_HOST config PCI_IMX6 - bool "Freescale i.MX6/7 PCIe controller" - depends on SOC_IMX6Q || SOC_IMX7D || (ARM && COMPILE_TEST) + bool "Freescale i.MX6/7/8 PCIe controller" + depends on SOC_IMX6Q || SOC_IMX7D || (ARM64 && ARCH_MXC) || ((ARM || ARM64) && COMPILE_TEST) depends on PCI_MSI_IRQ_DOMAIN select PCIE_DW_HOST diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 75ee0cd7af3b..dd9d8732f6ba 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -8,6 +8,7 @@ * Author: Sean Cross */ +#include #include #include #include @@ -32,6 +33,12 @@ #include "pcie-designware.h" +#define IMX8MQ_GPR_PCIE_REF_USE_PAD BIT(9) +#define IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE_EN BIT(10) +#define IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE BIT(11) +#define IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE GENMASK(11, 8) +#define IMX8MQ_PCIE2_BASE_ADDR 0x33c00000 + #define to_imx6_pcie(x) dev_get_drvdata((x)->dev) enum imx6_pcie_variants { @@ -39,6 +46,7 @@ enum imx6_pcie_variants { IMX6SX, IMX6QP, IMX7D, + IMX8MQ, }; #define IMX6_PCIE_FLAG_IMX6_PHY BIT(0) @@ -58,6 +66,7 @@ struct imx6_pcie { struct clk *pcie_inbound_axi; struct clk *pcie; struct regmap *iomuxc_gpr; + u32 controller_id; struct reset_control *pciephy_reset; struct reset_control *apps_reset; struct reset_control *turnoff_reset; @@ -276,6 +285,7 @@ static void imx6_pcie_reset_phy(struct imx6_pcie *imx6_pcie) pcie_phy_write(imx6_pcie, PHY_RX_OVRD_IN_LO, tmp); } +#ifdef CONFIG_ARM /* Added for PCI abort handling */ static int imx6q_pcie_abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs) @@ -309,6 +319,7 @@ static int imx6q_pcie_abort_handler(unsigned long addr, return 1; } +#endif static int imx6_pcie_attach_pd(struct device *dev) { @@ -353,6 +364,7 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) switch (imx6_pcie->drvdata->variant) { case IMX7D: + case IMX8MQ: reset_control_assert(imx6_pcie->pciephy_reset); reset_control_assert(imx6_pcie->apps_reset); break; @@ -387,10 +399,17 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) } } +static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) +{ + WARN_ON(imx6_pcie->drvdata->variant != IMX8MQ); + return imx6_pcie->controller_id == 1 ? IOMUXC_GPR16 : IOMUXC_GPR14; +} + static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) { struct dw_pcie *pci = imx6_pcie->pci; struct device *dev = pci->dev; + unsigned int offset; int ret = 0; switch (imx6_pcie->drvdata->variant) { @@ -421,6 +440,19 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) break; case IMX7D: break; + case IMX8MQ: + offset = imx6_pcie_grp_offset(imx6_pcie); + /* + * Set the over ride low and enabled + * make sure that REF_CLK is turned on. + */ + regmap_update_bits(imx6_pcie->iomuxc_gpr, offset, + IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE, + 0); + regmap_update_bits(imx6_pcie->iomuxc_gpr, offset, + IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE_EN, + IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE_EN); + break; } return ret; @@ -497,6 +529,9 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) } switch (imx6_pcie->drvdata->variant) { + case IMX8MQ: + reset_control_deassert(imx6_pcie->pciephy_reset); + break; case IMX7D: reset_control_deassert(imx6_pcie->pciephy_reset); imx7d_pcie_wait_for_phy_pll_lock(imx6_pcie); @@ -532,9 +567,37 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) } } +static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) +{ + unsigned int mask, val; + + if (imx6_pcie->drvdata->variant == IMX8MQ && + imx6_pcie->controller_id == 1) { + mask = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE; + val = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, + PCI_EXP_TYPE_ROOT_PORT); + } else { + mask = IMX6Q_GPR12_DEVICE_TYPE; + val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, + PCI_EXP_TYPE_ROOT_PORT); + } + + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask, val); +} + static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) { switch (imx6_pcie->drvdata->variant) { + case IMX8MQ: + /* + * TODO: Currently this code assumes external + * oscillator is being used + */ + regmap_update_bits(imx6_pcie->iomuxc_gpr, + imx6_pcie_grp_offset(imx6_pcie), + IMX8MQ_GPR_PCIE_REF_USE_PAD, + IMX8MQ_GPR_PCIE_REF_USE_PAD); + break; case IMX7D: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0); @@ -570,8 +633,7 @@ static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) break; } - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, - IMX6Q_GPR12_DEVICE_TYPE, PCI_EXP_TYPE_ROOT_PORT << 12); + imx6_pcie_configure_type(imx6_pcie); } static int imx6_setup_phy_mpll(struct imx6_pcie *imx6_pcie) @@ -668,6 +730,7 @@ static void imx6_pcie_ltssm_enable(struct device *dev) IMX6Q_GPR12_PCIE_CTL_2); break; case IMX7D: + case IMX8MQ: reset_control_deassert(imx6_pcie->apps_reset); break; } @@ -1008,6 +1071,10 @@ static int imx6_pcie_probe(struct platform_device *pdev) } break; case IMX7D: + case IMX8MQ: + if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR) + imx6_pcie->controller_id = 1; + imx6_pcie->pciephy_reset = devm_reset_control_get_exclusive(dev, "pciephy"); if (IS_ERR(imx6_pcie->pciephy_reset)) { @@ -1115,6 +1182,9 @@ static const struct imx6_pcie_drvdata drvdata[] = { [IMX7D] = { .variant = IMX7D, }, + [IMX8MQ] = { + .variant = IMX8MQ, + }, }; static const struct of_device_id imx6_pcie_of_match[] = { @@ -1122,6 +1192,7 @@ static const struct of_device_id imx6_pcie_of_match[] = { { .compatible = "fsl,imx6sx-pcie", .data = &drvdata[IMX6SX], }, { .compatible = "fsl,imx6qp-pcie", .data = &drvdata[IMX6QP], }, { .compatible = "fsl,imx7d-pcie", .data = &drvdata[IMX7D], }, + { .compatible = "fsl,imx8mq-pcie", .data = &drvdata[IMX8MQ], } , {}, }; @@ -1138,6 +1209,7 @@ static struct platform_driver imx6_pcie_driver = { static int __init imx6_pcie_init(void) { +#ifdef CONFIG_ARM /* * Since probe() can be deferred we need to make sure that * hook_fault_code is not called after __init memory is freed @@ -1147,6 +1219,7 @@ static int __init imx6_pcie_init(void) */ hook_fault_code(8, imx6q_pcie_abort_handler, SIGBUS, 0, "external abort on non-linefetch"); +#endif return platform_driver_register(&imx6_pcie_driver); }