From patchwork Fri Jul 15 07:32:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Stein X-Patchwork-Id: 12918872 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 D3ACFC433EF for ; Fri, 15 Jul 2022 07:33:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232051AbiGOHdM (ORCPT ); Fri, 15 Jul 2022 03:33:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35316 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232039AbiGOHdL (ORCPT ); Fri, 15 Jul 2022 03:33:11 -0400 Received: from mx1.tq-group.com (mx1.tq-group.com [93.104.207.81]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 164307BE30; Fri, 15 Jul 2022 00:33:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1657870390; x=1689406390; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=slT0zUpV9RfPM9uPTk2NhEc4i0611l7L6RhajXWI4dc=; b=Kp+ZYOfV5UFGDXjSLfVh7mrj2bU1edi3zHy6vI2c+0t9b3LSrGXwv61V Kadjp+8Ob4vl3RS1nVWysrmqzvzVWnei0K6mvD3Thjfx0+ZlUoaBeoW9H HXKowm8brABT9QBrllum+DNFzOSgEJL1++a34gcLNxlwSopEmIqJpijTO xZ3htWaMGlU9TYCO9SkhKHF5dW15Be20Dy1V6vt4tSNVcsLB9J57JFcV0 dKYgYxT5ehkDOire8SMRuCLRP9BhaFB2S+By2kpplhoGAtz8liSAIcZMj moPoskykzvLlJAgFWcZrwq73s4VwQWqwoUy3el9EOCKrTvK7/95tWong5 Q==; X-IronPort-AV: E=Sophos;i="5.92,273,1650924000"; d="scan'208";a="25068549" Received: from unknown (HELO tq-pgp-pr1.tq-net.de) ([192.168.6.15]) by mx1-pgp.tq-group.com with ESMTP; 15 Jul 2022 09:33:04 +0200 Received: from mx1.tq-group.com ([192.168.6.7]) by tq-pgp-pr1.tq-net.de (PGP Universal service); Fri, 15 Jul 2022 09:33:04 +0200 X-PGP-Universal: processed; by tq-pgp-pr1.tq-net.de on Fri, 15 Jul 2022 09:33:04 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1657870384; x=1689406384; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=slT0zUpV9RfPM9uPTk2NhEc4i0611l7L6RhajXWI4dc=; b=qjU6c6kmyGIm9czuZNhbq1DnsBTAyvWdjf6Bs3VsWQhJ3eqlyGbEdc5s s/G0edcl6rfto9n7XipGvgvMoDpYapGOeoqmIuO51ZLpog9x6eLW1zfWO gbrY3oiP98uZnvjFYaWOfpPooK1YDVqM7SQ8nekSgh8c82+sEPGuNmSXB A5teuCELUKyNVzFO2berMkAS6XTYRwgdUVqQf0VGq6Dl6vFzx/S17mvUF XkcEFIaBiF+IJW8jy8x7xyrInNMwFxKoA6rlkRPlSp3hLRHq3oxtuCrPz J7NAsPmawTIDsaUTw6MErC+W0gLqRAz19g9Rn9uIY66FIlNfZhEHOz68M g==; X-IronPort-AV: E=Sophos;i="5.92,273,1650924000"; d="scan'208";a="25068547" Received: from vtuxmail01.tq-net.de ([10.115.0.20]) by mx1.tq-group.com with ESMTP; 15 Jul 2022 09:33:04 +0200 Received: from steina-w.tq-net.de (unknown [10.123.49.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by vtuxmail01.tq-net.de (Postfix) with ESMTPSA id 79FBE280056; Fri, 15 Jul 2022 09:33:04 +0200 (CEST) From: Alexander Stein To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Matthias Kaehlcke Cc: Alexander Stein , linux-usb@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v2 1/3] dt-bindings: usb: Add binding for TI USB8041 hub controller Date: Fri, 15 Jul 2022 09:32:58 +0200 Message-Id: <20220715073300.868087-1-alexander.stein@ew.tq-group.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The TI USB8041 is a USB 3.0 hub controller with 4 ports. This initial version of the binding only describes USB related aspects of the USB8041, it does not cover the option of connecting the controller as an i2c slave. Signed-off-by: Alexander Stein --- Changes in v2: * Removed 'items' from compatible, it's just en enum now * Rename reset-gpio to reset-gpios * Use 'items' for reset-gpios * Adjust description of vdd-supply * Sorted required list * Adjusted example .../devicetree/bindings/usb/ti,usb8041.yaml | 67 +++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/ti,usb8041.yaml diff --git a/Documentation/devicetree/bindings/usb/ti,usb8041.yaml b/Documentation/devicetree/bindings/usb/ti,usb8041.yaml new file mode 100644 index 000000000000..7fe7416e2b51 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ti,usb8041.yaml @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/ti,usb8041.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Binding for the TI USB8041 USB 3.0 hub controller + +maintainers: + - Matthias Kaehlcke + +allOf: + - $ref: usb-device.yaml# + +properties: + compatible: + enum: + - usb451,8140 + - usb451,8142 + + reg: true + + reset-gpios: + items: + - description: GPIO specifier for GRST# pin. + + vdd-supply: + description: + "VDD power supply to the hub" + + peer-hub: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle to the peer hub on the controller. + +required: + - compatible + - reg + - peer-hub + +additionalProperties: false + +examples: + - | + #include + + usb { + dr_mode = "host"; + #address-cells = <1>; + #size-cells = <0>; + + /* 2.0 hub on port 1 */ + hub_2_0: hub@1 { + compatible = "usb451,8142"; + reg = <1>; + peer-hub = <&hub_3_0>; + reset-gpios = <&gpio1 11 GPIO_ACTIVE_LOW>; + }; + + /* 3.0 hub on port 2 */ + hub_3_0: hub@2 { + compatible = "usb451,8140"; + reg = <2>; + peer-hub = <&hub_2_0>; + reset-gpios = <&gpio1 11 GPIO_ACTIVE_LOW>; + }; + }; From patchwork Fri Jul 15 07:32:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Stein X-Patchwork-Id: 12918870 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 E9056C433EF for ; Fri, 15 Jul 2022 07:33:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231915AbiGOHdJ (ORCPT ); Fri, 15 Jul 2022 03:33:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229560AbiGOHdI (ORCPT ); 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15 Jul 2022 09:33:04 +0200 Received: from steina-w.tq-net.de (unknown [10.123.49.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by vtuxmail01.tq-net.de (Postfix) with ESMTPSA id A0ABF280072; Fri, 15 Jul 2022 09:33:04 +0200 (CEST) From: Alexander Stein To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Matthias Kaehlcke Cc: Alexander Stein , linux-usb@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v2 2/3] usb: misc: onboard_usb_hub: Add reset-gpio support Date: Fri, 15 Jul 2022 09:32:59 +0200 Message-Id: <20220715073300.868087-2-alexander.stein@ew.tq-group.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220715073300.868087-1-alexander.stein@ew.tq-group.com> References: <20220715073300.868087-1-alexander.stein@ew.tq-group.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Despite default reset upon probe, release reset line after powering up the hub and assert reset again before powering down. Signed-off-by: Alexander Stein --- Changes in v2: * Use device specific sleep times, if present * Use fsleep instead of usleep_range drivers/usb/misc/onboard_usb_hub.c | 29 +++++++++++++++++++++++++++++ drivers/usb/misc/onboard_usb_hub.h | 5 +++++ 2 files changed, 34 insertions(+) diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c index 6b9b949d17d3..1dd7f4767def 100644 --- a/drivers/usb/misc/onboard_usb_hub.c +++ b/drivers/usb/misc/onboard_usb_hub.c @@ -7,6 +7,7 @@ #include #include +#include #include #include #include @@ -38,6 +39,8 @@ struct usbdev_node { struct onboard_hub { struct regulator *vdd; struct device *dev; + const struct onboard_hub_devtype_data *devtype_data; + struct gpio_desc *reset_gpio; bool always_powered_in_suspend; bool is_powered_on; bool going_away; @@ -56,6 +59,11 @@ static int onboard_hub_power_on(struct onboard_hub *hub) return err; } + if (hub->devtype_data) + fsleep(hub->devtype_data->power_stable_time); + if (hub->reset_gpio) + gpiod_set_value_cansleep(hub->reset_gpio, 0); + hub->is_powered_on = true; return 0; @@ -65,6 +73,12 @@ static int onboard_hub_power_off(struct onboard_hub *hub) { int err; + if (hub->reset_gpio) { + gpiod_set_value_cansleep(hub->reset_gpio, 1); + if (hub->devtype_data) + fsleep(hub->devtype_data->reset_duration); + } + err = regulator_disable(hub->vdd); if (err) { dev_err(hub->dev, "failed to disable regulator: %d\n", err); @@ -219,6 +233,7 @@ static void onboard_hub_attach_usb_driver(struct work_struct *work) static int onboard_hub_probe(struct platform_device *pdev) { + const struct of_device_id *of_id; struct device *dev = &pdev->dev; struct onboard_hub *hub; int err; @@ -227,10 +242,24 @@ static int onboard_hub_probe(struct platform_device *pdev) if (!hub) return -ENOMEM; + of_id = of_match_device(onboard_hub_match, &pdev->dev); + if (of_id) + hub->devtype_data = of_id->data; + else + return -ENODEV; + hub->vdd = devm_regulator_get(dev, "vdd"); if (IS_ERR(hub->vdd)) return PTR_ERR(hub->vdd); + hub->reset_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(hub->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(hub->reset_gpio), "failed to get reset GPIO\n"); + + if (hub->devtype_data && hub->reset_gpio) + fsleep(hub->devtype_data->reset_duration); + hub->dev = dev; mutex_init(&hub->lock); INIT_LIST_HEAD(&hub->udev_list); diff --git a/drivers/usb/misc/onboard_usb_hub.h b/drivers/usb/misc/onboard_usb_hub.h index d3a5b6938582..7e743f4c8aaa 100644 --- a/drivers/usb/misc/onboard_usb_hub.h +++ b/drivers/usb/misc/onboard_usb_hub.h @@ -6,6 +6,11 @@ #ifndef _USB_MISC_ONBOARD_USB_HUB_H #define _USB_MISC_ONBOARD_USB_HUB_H +struct onboard_hub_devtype_data { + unsigned long power_stable_time; /* power stabilization time in us */ + unsigned long reset_duration; /* reset pulse width in us */ +}; + static const struct of_device_id onboard_hub_match[] = { { .compatible = "usbbda,411" }, { .compatible = "usbbda,5411" }, From patchwork Fri Jul 15 07:33:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Stein X-Patchwork-Id: 12918871 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 F3C50CCA483 for ; 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X-IronPort-AV: E=Sophos;i="5.92,273,1650924000"; d="scan'208";a="25068551" Received: from vtuxmail01.tq-net.de ([10.115.0.20]) by mx1.tq-group.com with ESMTP; 15 Jul 2022 09:33:04 +0200 Received: from steina-w.tq-net.de (unknown [10.123.49.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by vtuxmail01.tq-net.de (Postfix) with ESMTPSA id C5B19280056; Fri, 15 Jul 2022 09:33:04 +0200 (CEST) From: Alexander Stein To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Matthias Kaehlcke Cc: Alexander Stein , linux-usb@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v2 3/3] usb: misc: onboard_usb_hub: Add TI USB8041 hub support Date: Fri, 15 Jul 2022 09:33:00 +0200 Message-Id: <20220715073300.868087-3-alexander.stein@ew.tq-group.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220715073300.868087-1-alexander.stein@ew.tq-group.com> References: <20220715073300.868087-1-alexander.stein@ew.tq-group.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This is a 4-port 3.0 USB hub. Signed-off-by: Alexander Stein --- Changes in v2: * Add devtype data containing waiting times drivers/usb/misc/onboard_usb_hub.c | 3 +++ drivers/usb/misc/onboard_usb_hub.h | 7 +++++++ 2 files changed, 10 insertions(+) diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c index 1dd7f4767def..319b4b1748fb 100644 --- a/drivers/usb/misc/onboard_usb_hub.c +++ b/drivers/usb/misc/onboard_usb_hub.c @@ -339,6 +339,7 @@ static struct platform_driver onboard_hub_driver = { /************************** USB driver **************************/ #define VENDOR_ID_REALTEK 0x0bda +#define VENDOR_ID_TI 0x0451 /* * Returns the onboard_hub platform device that is associated with the USB @@ -416,6 +417,8 @@ static const struct usb_device_id onboard_hub_id_table[] = { { USB_DEVICE(VENDOR_ID_REALTEK, 0x5411) }, /* RTS5411 USB 2.1 */ { USB_DEVICE(VENDOR_ID_REALTEK, 0x0414) }, /* RTS5414 USB 3.2 */ { USB_DEVICE(VENDOR_ID_REALTEK, 0x5414) }, /* RTS5414 USB 2.1 */ + { USB_DEVICE(VENDOR_ID_TI, 0x8140) }, /* TI USB8041 3.0 */ + { USB_DEVICE(VENDOR_ID_TI, 0x8142) }, /* TI USB8041 2.0 */ {} }; MODULE_DEVICE_TABLE(usb, onboard_hub_id_table); diff --git a/drivers/usb/misc/onboard_usb_hub.h b/drivers/usb/misc/onboard_usb_hub.h index 7e743f4c8aaa..fcb6a9024bbd 100644 --- a/drivers/usb/misc/onboard_usb_hub.h +++ b/drivers/usb/misc/onboard_usb_hub.h @@ -11,7 +11,14 @@ struct onboard_hub_devtype_data { unsigned long reset_duration; /* reset pulse width in us */ }; +static const struct onboard_hub_devtype_data ti_tusb8041_data = { + .power_stable_time = 3000, + .reset_duration = 3000, +}; + static const struct of_device_id onboard_hub_match[] = { + { .compatible = "usb451,8140", .data = &ti_tusb8041_data, }, + { .compatible = "usb451,8142", .data = &ti_tusb8041_data, }, { .compatible = "usbbda,411" }, { .compatible = "usbbda,5411" }, { .compatible = "usbbda,414" },