From patchwork Fri May 5 06:40:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhupesh Sharma X-Patchwork-Id: 13232185 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3571C77B75 for ; Fri, 5 May 2023 06:41:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230498AbjEEGlD (ORCPT ); Fri, 5 May 2023 02:41:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230474AbjEEGk7 (ORCPT ); Fri, 5 May 2023 02:40:59 -0400 Received: from mail-pg1-x529.google.com (mail-pg1-x529.google.com [IPv6:2607:f8b0:4864:20::529]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C825A1609C for ; Thu, 4 May 2023 23:40:52 -0700 (PDT) Received: by mail-pg1-x529.google.com with SMTP id 41be03b00d2f7-51f597c975fso1263703a12.0 for ; Thu, 04 May 2023 23:40:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1683268852; x=1685860852; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Fcm7rdxyr0xQGgW24k3dhsiALIquYRobfBwbbRtNKtU=; b=Q6yy787yvN0xQS4jJfeyx9C2FRtdQmyTxVJ8w7F4NVmq1evCftj87C9EkmVGTnPf8l A6qvGHwGmgAfiPENVMgd/ZcdntZIopxTdu5XhdtgvN62Eti98pUKbmkWr6FLnMHbGct4 nLi38fMcJKxCPAE064e0H5pgW8KVO87k2jTYE3LDmdqWMbrBkiOQlB5SkCWCkd2621zc T3R4gvJtKzMEpDVja25xIv43yV9q+J69LiHjqEzokeMrljiYvEY08sBPobOkVifdUAxR /xuMi/zd/Y0arjAqhiCUaOBCllhlR6RU7WOyhe+/hIJtL+G4iUyuqiLzNwoBpSeU8OxT QmcQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683268852; x=1685860852; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Fcm7rdxyr0xQGgW24k3dhsiALIquYRobfBwbbRtNKtU=; b=GtV5327nsjmu5QbfloylRoAfYUJXAj3LAW0PQkbF31Va/fSWh15VG5Qv63ijaQvgcQ VwvpLhWFrGH1eNorTJtox38bt9vMHXJUZ9dXN4FQItoSYHW5VpUwph73zHAPHLQGfX4B zvl3Rz+2N7O568ldMfkrzfjHPX/6WDBZXKxK90tbAWNlm93h3d+kW0FXZuJMqvEmKjia 9cQPGdF+Q959Vd9mAycBJrNigDuBBryR3K/lSQ6Q+sWHTfPCiNL6qKF1XRPSnYgCjds+ YCOTw9kKCvWcwBm1Zav0UCc29Ymx/MGyq3D+Wxq3FLJkD9Knv/0Wq21qbEZYKkDDUOJ3 XOLw== X-Gm-Message-State: AC+VfDwNh8kGoxvEWt1QwBCAr75YOwOU8SMQ8vvKIfnW3Tdm8DGpCOxO PARXJlYnfhb7j1J4vkUfbV3D4gI5J6NSDd0AZF0= X-Google-Smtp-Source: ACHHUZ6jemHRhjG0GcxYNktlk6dyt8FRpMgQ9x4jI0pFw6UN9dzfK/kCHY6vKO33CIBWlB8B2mLkmg== X-Received: by 2002:a17:902:8691:b0:1a5:150f:8558 with SMTP id g17-20020a170902869100b001a5150f8558mr397342plo.17.1683268851927; Thu, 04 May 2023 23:40:51 -0700 (PDT) Received: from localhost.localdomain ([223.233.65.180]) by smtp.gmail.com with ESMTPSA id c4-20020a170902848400b001ab0b2dad2fsm816251plo.211.2023.05.04.23.40.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 May 2023 23:40:51 -0700 (PDT) From: Bhupesh Sharma To: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-usb@vger.kernel.org Cc: agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, linux-kernel@vger.kernel.org, bhupesh.linux@gmail.com, bhupesh.sharma@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org Subject: [PATCH v4 1/5] usb: misc: eud: Fix eud sysfs path (use 'qcom_eud') Date: Fri, 5 May 2023 12:10:35 +0530 Message-Id: <20230505064039.1630025-2-bhupesh.sharma@linaro.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230505064039.1630025-1-bhupesh.sharma@linaro.org> References: <20230505064039.1630025-1-bhupesh.sharma@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The eud sysfs enablement path is currently mentioned in the Documentation as: /sys/bus/platform/drivers/eud/.../enable Instead it should be: /sys/bus/platform/drivers/qcom_eud/.../enable Fix the same. Reviewed-by: Konrad Dybcio Signed-off-by: Bhupesh Sharma --- Documentation/ABI/testing/sysfs-driver-eud | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/ABI/testing/sysfs-driver-eud b/Documentation/ABI/testing/sysfs-driver-eud index 83f3872182a4..2bab0db2d2f0 100644 --- a/Documentation/ABI/testing/sysfs-driver-eud +++ b/Documentation/ABI/testing/sysfs-driver-eud @@ -1,4 +1,4 @@ -What: /sys/bus/platform/drivers/eud/.../enable +What: /sys/bus/platform/drivers/qcom_eud/.../enable Date: February 2022 Contact: Souradeep Chowdhury Description: From patchwork Fri May 5 06:40:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhupesh Sharma X-Patchwork-Id: 13232186 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DABEDC77B7F for ; Fri, 5 May 2023 06:41:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230478AbjEEGlH (ORCPT ); Fri, 5 May 2023 02:41:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56434 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230475AbjEEGlG (ORCPT ); Fri, 5 May 2023 02:41:06 -0400 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BE2B160AD for ; Thu, 4 May 2023 23:40:57 -0700 (PDT) Received: by mail-pl1-x632.google.com with SMTP id d9443c01a7336-1ab1ce53ca6so10034715ad.0 for ; Thu, 04 May 2023 23:40:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1683268856; x=1685860856; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=tpKnP1YDIVbRZiADGr23D8oPufyg/cq5r9T3i6z6bvI=; b=WDGKOcE/FqB/GE1K1S4uwtGh0vKOxbxdgPVXny6oxcV6ELPkwE0oO6wteOa7dVpuGF 4IZcPC5nAhF0NwCIuS5r8t660wUQiFv7/JbH/q05Nj2/mH7hrP2N2rIhCFDxMuQ6veao KlugUTS4vzzLdHyHSCxwORtKZq7PAcznLjS1Zv/DvBrU1xRJkmnuD2R4x4vx5sG7TxFr awrWCIZK9QBEg78rcfnGvTcHb92YzObLp2+bAf5lXL2Cwt8Y7/BlvWTzp42z/O0z2Gcf QyS1Y5FilonYnTVz53rxVxcuyYPtBe/KXXybt332TQUpNnga2nEZrIwY8CbEpLI+l85l AlIA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683268856; x=1685860856; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tpKnP1YDIVbRZiADGr23D8oPufyg/cq5r9T3i6z6bvI=; b=S3n2DBAMak3bBHwCcgqoweMYC49nGZteQ2sAtN0imlKwmI7q0zpda+lkQbfb2FS2bt 34KJRTmRLCDr6RyS7vArWvHPJWZqJmtfc3XE2WqNOwQ+No9XmiNdio6xQzHHjZQWTlqB t3IWZWRMxBaNPfmrOS/CR+oEU3Et4pmWozt1VXqgG/JVQ1dIn2Zhj0I2PaLjbgMoRFVD qnx1px3qVZvAFB4tUTH2pU3GBlaEjIN6BrR8y7wpWWcV8FC5v61vw0LaL5gw2d/LJKuK 2aQWg771LiB1psCwg310q6d+zlGhZd7gseonnwMP8Y7VrIXuNie4nY9RHKNw6/bGSQGS lebg== X-Gm-Message-State: AC+VfDxUNu3qPsyd2GAs609Aab0MJzsKg+9w0Z4uqPmKvcQwt/a0ScfM LUn9VGSUj1Vll/Az1mCqyxLXcd/ym+NlzM8Au38= X-Google-Smtp-Source: ACHHUZ6MMo/HLA1Gv2YAbG3oUKKVDbJY3AY4Pc1AnYFRJAXjH15QHfQWx74AKStc9XKhLJc+KdzF9Q== X-Received: by 2002:a17:903:2405:b0:1a6:4b60:3195 with SMTP id e5-20020a170903240500b001a64b603195mr437377plo.66.1683268856042; Thu, 04 May 2023 23:40:56 -0700 (PDT) Received: from localhost.localdomain ([223.233.65.180]) by smtp.gmail.com with ESMTPSA id c4-20020a170902848400b001ab0b2dad2fsm816251plo.211.2023.05.04.23.40.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 May 2023 23:40:55 -0700 (PDT) From: Bhupesh Sharma To: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-usb@vger.kernel.org Cc: agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, linux-kernel@vger.kernel.org, bhupesh.linux@gmail.com, bhupesh.sharma@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org Subject: [PATCH v4 2/5] dt-bindings: soc: qcom: eud: Add SM6115 / SM4250 support Date: Fri, 5 May 2023 12:10:36 +0530 Message-Id: <20230505064039.1630025-3-bhupesh.sharma@linaro.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230505064039.1630025-1-bhupesh.sharma@linaro.org> References: <20230505064039.1630025-1-bhupesh.sharma@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add dt-bindings for EUD found on Qualcomm SM6115 / SM4250 SoC. On this SoC (and derivatives) the enable bit inside 'tcsr_check_reg' needs to be set first to 'enable' the eud module. So, update the dt-bindings to accommodate the third register property (TCSR Base) required by the driver on these SoCs. Also for these SoCs, introduce a new bool property 'qcom,secure-mode-enable', which indicates that the mode manager needs to be accessed only via the secure world. Signed-off-by: Bhupesh Sharma --- .../devicetree/bindings/soc/qcom/qcom,eud.yaml | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml index f2c5ec7e6437..3b92cdf4e306 100644 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml @@ -18,17 +18,33 @@ properties: items: - enum: - qcom,sc7280-eud + - qcom,sm6115-eud - const: qcom,eud reg: + minItems: 2 items: - description: EUD Base Register Region - description: EUD Mode Manager Register + - description: TCSR Base Register Region + + reg-names: + minItems: 2 + items: + - const: eud-base + - const: eud-mode-mgr + - const: tcsr-base interrupts: description: EUD interrupt maxItems: 1 + qcom,secure-mode-enable: + type: boolean + description: + Indicates that the mode manager needs to be accessed only via the secure + world (through 'scm' calls). + ports: $ref: /schemas/graph.yaml#/properties/ports description: From patchwork Fri May 5 06:40:37 2023 Content-Type: text/plain; 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On some SoCs (like the SM6115 / SM4250 SoC), the mode manager needs to be accessed only via the secure world (through 'scm' calls). Also, the enable bit inside 'tcsr_check_reg' needs to be set first to set the eud in 'enable' mode on these SoCs. Since this difference comes from how the firmware is configured, so the driver now relies on the presence of an extra boolean DT property to identify if secure access is needed. Signed-off-by: Bhupesh Sharma --- drivers/usb/misc/Kconfig | 1 + drivers/usb/misc/qcom_eud.c | 74 +++++++++++++++++++++++++++++++++---- 2 files changed, 68 insertions(+), 7 deletions(-) diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig index 99b15b77dfd5..fe1b5fec1dfc 100644 --- a/drivers/usb/misc/Kconfig +++ b/drivers/usb/misc/Kconfig @@ -147,6 +147,7 @@ config USB_APPLEDISPLAY config USB_QCOM_EUD tristate "QCOM Embedded USB Debugger(EUD) Driver" depends on ARCH_QCOM || COMPILE_TEST + select QCOM_SCM select USB_ROLE_SWITCH help This module enables support for Qualcomm Technologies, Inc. diff --git a/drivers/usb/misc/qcom_eud.c b/drivers/usb/misc/qcom_eud.c index b7f13df00764..18a2dee3b4b9 100644 --- a/drivers/usb/misc/qcom_eud.c +++ b/drivers/usb/misc/qcom_eud.c @@ -5,12 +5,14 @@ #include #include +#include #include #include #include #include #include #include +#include #include #include #include @@ -22,23 +24,35 @@ #define EUD_REG_VBUS_INT_CLR 0x0080 #define EUD_REG_CSR_EUD_EN 0x1014 #define EUD_REG_SW_ATTACH_DET 0x1018 -#define EUD_REG_EUD_EN2 0x0000 +#define EUD_REG_EUD_EN2 0x0000 #define EUD_ENABLE BIT(0) -#define EUD_INT_PET_EUD BIT(0) +#define EUD_INT_PET_EUD BIT(0) #define EUD_INT_VBUS BIT(2) #define EUD_INT_SAFE_MODE BIT(4) #define EUD_INT_ALL (EUD_INT_VBUS | EUD_INT_SAFE_MODE) +#define EUD_EN2_SECURE_EN BIT(0) +#define EUD_EN2_NONSECURE_EN (1) +#define EUD_EN2_DISABLE (0) +#define TCSR_CHECK_EN BIT(0) + +struct eud_soc_cfg { + u32 tcsr_check_offset; +}; + struct eud_chip { struct device *dev; struct usb_role_switch *role_sw; + const struct eud_soc_cfg *eud_cfg; void __iomem *base; void __iomem *mode_mgr; unsigned int int_status; int irq; bool enabled; bool usb_attached; + bool secure_mode_enable; + phys_addr_t secure_mode_mgr; }; static int enable_eud(struct eud_chip *priv) @@ -46,7 +60,11 @@ static int enable_eud(struct eud_chip *priv) writel(EUD_ENABLE, priv->base + EUD_REG_CSR_EUD_EN); writel(EUD_INT_VBUS | EUD_INT_SAFE_MODE, priv->base + EUD_REG_INT1_EN_MASK); - writel(1, priv->mode_mgr + EUD_REG_EUD_EN2); + + if (priv->secure_mode_mgr) + qcom_scm_io_writel(priv->secure_mode_mgr + EUD_REG_EUD_EN2, EUD_EN2_SECURE_EN); + else + writel(EUD_EN2_NONSECURE_EN, priv->mode_mgr + EUD_REG_EUD_EN2); return usb_role_switch_set_role(priv->role_sw, USB_ROLE_DEVICE); } @@ -54,7 +72,11 @@ static int enable_eud(struct eud_chip *priv) static void disable_eud(struct eud_chip *priv) { writel(0, priv->base + EUD_REG_CSR_EUD_EN); - writel(0, priv->mode_mgr + EUD_REG_EUD_EN2); + + if (priv->secure_mode_mgr) + qcom_scm_io_writel(priv->secure_mode_mgr + EUD_REG_EUD_EN2, EUD_EN2_DISABLE); + else + writel(EUD_EN2_DISABLE, priv->mode_mgr + EUD_REG_EUD_EN2); } static ssize_t enable_show(struct device *dev, @@ -178,6 +200,8 @@ static void eud_role_switch_release(void *data) static int eud_probe(struct platform_device *pdev) { struct eud_chip *chip; + struct resource *res; + phys_addr_t tcsr_base, tcsr_check; int ret; chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); @@ -200,9 +224,40 @@ static int eud_probe(struct platform_device *pdev) if (IS_ERR(chip->base)) return PTR_ERR(chip->base); - chip->mode_mgr = devm_platform_ioremap_resource(pdev, 1); - if (IS_ERR(chip->mode_mgr)) - return PTR_ERR(chip->mode_mgr); + chip->secure_mode_enable = of_property_read_bool(chip->dev->of_node, + "qcom,secure-mode-enable"); + /* + * EUD block on a few Qualcomm SoCs need secure register access. + * Check for the same. + */ + if (chip->secure_mode_enable) { + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res) + return dev_err_probe(chip->dev, -ENODEV, + "failed to get secure_mode_mgr reg base\n"); + + chip->secure_mode_mgr = res->start; + } else { + chip->mode_mgr = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(chip->mode_mgr)) + return PTR_ERR(chip->mode_mgr); + } + + /* Check for any SoC specific config data */ + chip->eud_cfg = of_device_get_match_data(&pdev->dev); + if (chip->eud_cfg) { + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tcsr-base"); + if (!res) + return dev_err_probe(chip->dev, -ENODEV, + "failed to get tcsr reg base\n"); + + tcsr_base = res->start; + tcsr_check = tcsr_base + chip->eud_cfg->tcsr_check_offset; + + ret = qcom_scm_io_writel(tcsr_check, TCSR_CHECK_EN); + if (ret) + return dev_err_probe(chip->dev, ret, "failed to write tcsr check reg\n"); + } chip->irq = platform_get_irq(pdev, 0); ret = devm_request_threaded_irq(&pdev->dev, chip->irq, handle_eud_irq, @@ -230,8 +285,13 @@ static int eud_remove(struct platform_device *pdev) return 0; } +static const struct eud_soc_cfg sm6115_eud_cfg = { + .tcsr_check_offset = 0x25018, +}; + static const struct of_device_id eud_dt_match[] = { { .compatible = "qcom,sc7280-eud" }, + { .compatible = "qcom,sm6115-eud", .data = &sm6115_eud_cfg }, { } }; MODULE_DEVICE_TABLE(of, eud_dt_match); From patchwork Fri May 5 06:40:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhupesh Sharma X-Patchwork-Id: 13232188 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 316F5C77B7D for ; Fri, 5 May 2023 06:41:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231147AbjEEGlV (ORCPT ); Fri, 5 May 2023 02:41:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56690 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230508AbjEEGlS (ORCPT ); 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The node contains EUD base register region, EUD mode manager register region and TCSR Base register region along with the interrupt entry. Also add the typec connector node for EUD which is attached to EUD node via port. EUD is also attached to DWC3 node via port. To enable the role switch, we need to set dr_mode = "otg" property for 'usb_dwc3' sub-node in the board dts file. Also the EUD device can be enabled on a board once linux is boot'ed by setting: $ echo 1 > /sys/bus/platform/drivers/qcom_eud/../enable Signed-off-by: Bhupesh Sharma Reviewed-by: Konrad Dybcio --- arch/arm64/boot/dts/qcom/sm6115.dtsi | 51 ++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sm6115.dtsi b/arch/arm64/boot/dts/qcom/sm6115.dtsi index f67863561f3f..61a0af33ca43 100644 --- a/arch/arm64/boot/dts/qcom/sm6115.dtsi +++ b/arch/arm64/boot/dts/qcom/sm6115.dtsi @@ -180,6 +180,18 @@ core3 { }; }; + eud_typec: connector { + compatible = "usb-c-connector"; + + ports { + port@0 { + con_eud: endpoint { + remote-endpoint = <&eud_con>; + }; + }; + }; + }; + firmware { scm: scm { compatible = "qcom,scm-sm6115", "qcom,scm"; @@ -647,6 +659,38 @@ gcc: clock-controller@1400000 { #power-domain-cells = <1>; }; + eud: eud@1610000 { + compatible = "qcom,sm6115-eud", "qcom,eud"; + reg = <0x0 0x01610000 0x0 0x2000>, + <0x0 0x01612000 0x0 0x1000>, + <0x0 0x003c0000 0x0 0x40000>; + reg-names = "eud-base", "eud-mode-mgr", "tcsr-base"; + interrupts = ; + qcom,secure-mode-enable; + status = "disabled"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + eud_ep: endpoint { + remote-endpoint = <&usb2_role_switch>; + }; + }; + + port@1 { + reg = <1>; + + eud_con: endpoint { + remote-endpoint = <&con_eud>; + }; + }; + }; + }; + usb_hsphy: phy@1613000 { compatible = "qcom,sm6115-qusb2-phy"; reg = <0x0 0x01613000 0x0 0x180>; @@ -1144,6 +1188,13 @@ usb_dwc3: usb@4e00000 { snps,has-lpm-erratum; snps,hird-threshold = /bits/ 8 <0x10>; snps,usb3_lpm_capable; + usb-role-switch; + + port { + usb2_role_switch: endpoint { + remote-endpoint = <&eud_ep>; + }; + }; }; }; From patchwork Fri May 5 06:40:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhupesh Sharma X-Patchwork-Id: 13232189 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C289AC77B7D for ; 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Thu, 04 May 2023 23:41:08 -0700 (PDT) Received: from localhost.localdomain ([223.233.65.180]) by smtp.gmail.com with ESMTPSA id c4-20020a170902848400b001ab0b2dad2fsm816251plo.211.2023.05.04.23.41.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 May 2023 23:41:08 -0700 (PDT) From: Bhupesh Sharma To: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-usb@vger.kernel.org Cc: agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, linux-kernel@vger.kernel.org, bhupesh.linux@gmail.com, bhupesh.sharma@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org Subject: [PATCH v4 5/5] arm64: dts: qcom: qrb4210-rb2: Enable EUD debug peripheral Date: Fri, 5 May 2023 12:10:39 +0530 Message-Id: <20230505064039.1630025-6-bhupesh.sharma@linaro.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230505064039.1630025-1-bhupesh.sharma@linaro.org> References: <20230505064039.1630025-1-bhupesh.sharma@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Since the USB-C type port on the Qualcomm QRB4210-RB2 board can be set primarily in a 'device' configuration (with the default DIP switch settings), it makes sense to enable the EUD debug peripheral on the board by default by setting the USB 'dr_mode' property as 'otg'. Now, the EUD debug peripheral can be enabled by executing: $ echo 1 > /sys/bus/platform/drivers/qcom_eud/1610000.eud/enable Signed-off-by: Bhupesh Sharma Reviewed-by: Konrad Dybcio --- arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 27 +++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts index 1a0776a0cfd0..0ce72f1ebc10 100644 --- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts +++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts @@ -30,6 +30,10 @@ vph_pwr: vph-pwr-regulator { }; }; +&eud { + status = "okay"; +}; + &qupv3_id_0 { status = "okay"; }; @@ -253,7 +257,28 @@ &usb { &usb_dwc3 { maximum-speed = "super-speed"; - dr_mode = "peripheral"; + + /* + * There is only one USB DWC3 controller on QRB4210 board and it is connected + * via a DIP Switch: + * - to either an USB - C type connector or an USB - A type connector + * (via a GL3590-S hub), and + * - to either an USB - A type connector (via a GL3590-S hub) or a connector + * for further connection with a mezzanine board. + * + * All of the above hardware muxes would allow us to hook things up in + * different ways to some potential benefit for static configurations (for e.g. + * on one hand we can have two USB - A type connectors and a USB - Ethernet + * connection available and on the other we can use the USB - C type in + * peripheral mode). + * + * Note that since the USB - C type can be used only in peripehral mode, + * so hardcoding the mode to 'peripheral' here makes sense. + * + * However since we want to use the EUD debug device, we set the mode as + * 'otg' here. + */ + dr_mode = "otg"; }; &usb_hsphy {