From patchwork Wed Jul 27 09:37:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Stein X-Patchwork-Id: 594487 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 4D2BAC04A68 for ; Wed, 27 Jul 2022 09:38:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231202AbiG0JiX (ORCPT ); Wed, 27 Jul 2022 05:38:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50214 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231629AbiG0JiO (ORCPT ); Wed, 27 Jul 2022 05:38:14 -0400 Received: from mx1.tq-group.com (mx1.tq-group.com [93.104.207.81]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8014247B9A; Wed, 27 Jul 2022 02:38:11 -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=1658914691; x=1690450691; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=OzYJ1HAiwxCqKstvTbidtou/YL9g88MGig64r0nWnVw=; b=aNeaQNmmHY29thqsSw8GOw0fDq4B7lw7J82QrtKTYrrOAh2JYmbVmL9a 7vNU9VAiS0rrx5fwKKxx+bUg3C2UdtOoj+ovqVQfPbusblPhQIXy4ryE5 37BIKQp3Z4+Y58GxCAR2gUTeDIqw9XoREOAZrfHYFC1k2qTvZOV9psKPs G1Y/YPzUAYa1Cz7qjWCYOlrK8c1i/fWZvSHVdUXFFENqyBSekxTc1D8Eo ZOD62a9MhX73woMFLEguwyQEjZbqdxX9C8OR7iN+BWs2AlQVMNXxQxvrS uRAu0J95LNl7dTu4YF3/RSwPtPKZ07l44O8JojNIUWf1y6arRUs4g5j94 w==; X-IronPort-AV: E=Sophos;i="5.93,195,1654552800"; d="scan'208";a="25289990" Received: from unknown (HELO tq-pgp-pr1.tq-net.de) ([192.168.6.15]) by mx1-pgp.tq-group.com with ESMTP; 27 Jul 2022 11:38:05 +0200 Received: from mx1.tq-group.com ([192.168.6.7]) by tq-pgp-pr1.tq-net.de (PGP Universal service); Wed, 27 Jul 2022 11:38:05 +0200 X-PGP-Universal: processed; by tq-pgp-pr1.tq-net.de on Wed, 27 Jul 2022 11:38:05 +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=1658914685; x=1690450685; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=OzYJ1HAiwxCqKstvTbidtou/YL9g88MGig64r0nWnVw=; b=FlSgKtPatqXzQybeO1M5i+vW3M+lts1fznYqlX/bnsNyvfB4OV0vG/gZ dvkO3dIVeqtle4Jb7OwQw4Ld6yPWTyNiXtG2SY/2mG8IoNLpXpbX2dd4r H6mczfS2/S75oqVfA3vV75nFy95v5WP8ohJ3rA4MUdM6G78zvbbyTlruz HvPiD2v7W4fnpgBDQbaezisQ8Vws835x3iHIKsjmr13KBg5l50fwYZgEO ZBs+h2KLtc22TUkSVrmMrv7jUE88HPWi5+nw5zW4gbKSrwsdzB+vifFX9 KGWaHaKEsIzdmpNiS7A/cBeuetxbWPU1qBKmO8FEIfaRQKtJxRqkporsO w==; X-IronPort-AV: E=Sophos;i="5.93,195,1654552800"; d="scan'208";a="25289987" Received: from vtuxmail01.tq-net.de ([10.115.0.20]) by mx1.tq-group.com with ESMTP; 27 Jul 2022 11:38:04 +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 C6C12280056; Wed, 27 Jul 2022 11:38:04 +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 v3 1/3] dt-bindings: usb: Add binding for TI USB8041 hub controller Date: Wed, 27 Jul 2022 11:37:59 +0200 Message-Id: <20220727093801.687361-1-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 --- Thanks Matthias for your review. Changes in v3: * Put myself as maintainer * Removed quotes around description 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..e04fbd8ab0b7 --- /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: + - Alexander Stein + +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 Wed Jul 27 09:38:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Stein X-Patchwork-Id: 594488 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 70ACDC19F29 for ; Wed, 27 Jul 2022 09:38:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231310AbiG0JiV (ORCPT ); Wed, 27 Jul 2022 05:38:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50198 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231877AbiG0JiN (ORCPT ); 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27 Jul 2022 11:38:05 +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 EEDBA280072; Wed, 27 Jul 2022 11:38:04 +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 v3 2/3] usb: misc: onboard_usb_hub: Add reset-gpio support Date: Wed, 27 Jul 2022 11:38:00 +0200 Message-Id: <20220727093801.687361-2-alexander.stein@ew.tq-group.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220727093801.687361-1-alexander.stein@ew.tq-group.com> References: <20220727093801.687361-1-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 --- Thanks Matthias for your review. Changes in v3: * Require platform data unconditionally * Removed unecessary checks for that reason * Merged power_stable_time into reset_duration (no difference for now) * Rename 'reset_duration' to 'reset_us' * Renamed platform structure to onboard_hub_pdata * Renamed device struct field to pdata as well Changes in v2: * Use device specific sleep times, if present * Use fsleep instead of usleep_range drivers/usb/misc/onboard_usb_hub.c | 28 ++++++++++++++++++++++++++++ drivers/usb/misc/onboard_usb_hub.h | 16 ++++++++++++---- 2 files changed, 40 insertions(+), 4 deletions(-) diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c index 6b9b949d17d3..2aa1db528b31 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_pdata *pdata; + struct gpio_desc *reset_gpio; bool always_powered_in_suspend; bool is_powered_on; bool going_away; @@ -56,6 +59,9 @@ static int onboard_hub_power_on(struct onboard_hub *hub) return err; } + fsleep(hub->pdata->reset_us); + gpiod_set_value_cansleep(hub->reset_gpio, 0); + hub->is_powered_on = true; return 0; @@ -65,6 +71,11 @@ static int onboard_hub_power_off(struct onboard_hub *hub) { int err; + if (hub->reset_gpio) { + gpiod_set_value_cansleep(hub->reset_gpio, 1); + fsleep(hub->pdata->reset_us); + } + err = regulator_disable(hub->vdd); if (err) { dev_err(hub->dev, "failed to disable regulator: %d\n", err); @@ -219,6 +230,7 @@ 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 +239,26 @@ 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) + return -ENODEV; + + hub->pdata = of_id->data; + if (!hub->pdata) + return -EINVAL; + 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->reset_gpio) + fsleep(hub->pdata->reset_us); + 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..01d067db81f2 100644 --- a/drivers/usb/misc/onboard_usb_hub.h +++ b/drivers/usb/misc/onboard_usb_hub.h @@ -6,11 +6,19 @@ #ifndef _USB_MISC_ONBOARD_USB_HUB_H #define _USB_MISC_ONBOARD_USB_HUB_H +struct onboard_hub_pdata { + unsigned long reset_us; /* reset pulse width in us */ +}; + +static const struct onboard_hub_pdata realtek_rts5411_data = { + .reset_us = 0, +}; + static const struct of_device_id onboard_hub_match[] = { - { .compatible = "usbbda,411" }, - { .compatible = "usbbda,5411" }, - { .compatible = "usbbda,414" }, - { .compatible = "usbbda,5414" }, + { .compatible = "usbbda,411", .data = &realtek_rts5411_data, }, + { .compatible = "usbbda,5411", .data = &realtek_rts5411_data, }, + { .compatible = "usbbda,414", .data = &realtek_rts5411_data, }, + { .compatible = "usbbda,5414", .data = &realtek_rts5411_data, }, {} }; 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Wed, 27 Jul 2022 11:38:05 +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 v3 3/3] usb: misc: onboard_usb_hub: Add TI USB8041 hub support Date: Wed, 27 Jul 2022 11:38:01 +0200 Message-Id: <20220727093801.687361-3-alexander.stein@ew.tq-group.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220727093801.687361-1-alexander.stein@ew.tq-group.com> References: <20220727093801.687361-1-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 --- Thanks Matthias for your review. Changes in v3: * Removed now unneeded power_stable_time * Adjust for reset_us rename Changes in v2: * Add devtype data containing waiting times drivers/usb/misc/onboard_usb_hub.c | 3 +++ drivers/usb/misc/onboard_usb_hub.h | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c index 2aa1db528b31..276174c20e7a 100644 --- a/drivers/usb/misc/onboard_usb_hub.c +++ b/drivers/usb/misc/onboard_usb_hub.c @@ -338,6 +338,7 @@ 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 @@ -415,6 +416,8 @@ 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 01d067db81f2..290afc2f504f 100644 --- a/drivers/usb/misc/onboard_usb_hub.h +++ b/drivers/usb/misc/onboard_usb_hub.h @@ -14,7 +14,13 @@ static const struct onboard_hub_pdata realtek_rts5411_data = { .reset_us = 0, }; +static const struct onboard_hub_pdata ti_tusb8041_data = { + .reset_us = 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", .data = &realtek_rts5411_data, }, { .compatible = "usbbda,5411", .data = &realtek_rts5411_data, }, { .compatible = "usbbda,414", .data = &realtek_rts5411_data, },